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50,081,605 | 1 | null | null | 2 | 501 | I use a c++ native Library in my Android project, but when Proguard is Enabled, the app crashes. My code in c++ depends on the packagename, so I need to prevent the packagename from being renamed by Proguard.
I used this rule so far, but it's not working:
```
-keepclasseswithmembernames class * {
native <methods>;
}
```
I appreciate you support.
| Proguard: How to prevent the renaming of Packagename in Android? | CC BY-SA 3.0 | 0 | 2018-04-28T22:25:18.327 | 2018-04-30T07:40:19.187 | 2018-04-30T06:09:38.503 | 7,805,800 | 7,805,800 | [
"java",
"android",
"proguard",
"obfuscation",
"mobile-development"
] |
50,119,263 | 1 | 50,119,312 | null | -4 | 66 | [This is when app start[][1]](https://i.stack.imgur.com/faybp.png)
[This is after open a Activity or make some action, memory keep up 460mb and more][2][2](https://i.stack.imgur.com/R78xP.png)
this is my manifest:
```
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.nexttip.personaltrainer">
<!-- Permisos de la aplicaion -->
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<application
android:allowBackup="true"
android:hardwareAccelerated="false"
android:largeHeap="true"
android:name="android.support.multidex.MultiDexApplication"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@drawable/ic_launcher"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<!-- Splash Screen -->
<activity
android:name=".SplashScreenActivity"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar" />
<activity android:name=".DonateMainLayout" />
<activity android:name=".VideoListActivity" />
<activity
android:name=".VideoActivity"
android:screenOrientation="landscape"
android:theme="@style/videoPlayer" />
<activity android:name=".RateActivity" />
<meta-data
android:name="preloaded_fonts"
android:resource="@array/preloaded_fonts" />
<activity android:name=".BMI" />
<activity android:name=".Result_BMI" />
<activity
android:name=".Video_Stream"
android:screenOrientation="landscape"
android:theme="@style/videoStream" />
<activity
android:name=".Timer_CountDown"
android:theme="@style/AppTheme.Transparent" />
<activity
android:name=".ActivityList1"
android:label="@string/list1_label" />
<activity
android:name=".ActivityList2"
android:label="@string/list2_label" />
<activity
android:name=".ActivityList3"
android:label="@string/list3_label" />
<activity
android:name=".ActivityList4"
android:label="@string/list4_label" />
<activity
android:name=".ActivityList5"
android:label="@string/list5_label">
</activity>
<activity
android:name=".IntroActivity"
android:label="@string/intro_title">
</activity>
<activity
android:name=".TipsActivity"
android:label="@string/tips_title">
</activity>
<activity android:name=".DietPlanMain"
android:label="@string/diet_title">
</activity>
</application>
</manifest>
```
this is my gradle:
```
apply plugin: 'com.android.application'
repositories {
maven {
url 'https://maven.google.com'
}
}
android {
compileSdkVersion 26
defaultConfig {
applicationId "com.nexttip.personaltrainer"
minSdkVersion 19
targetSdkVersion 26
multiDexEnabled true
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support:design:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
compile 'me.itangqi.waveloadingview:library:0.3.5'
compile 'com.android.support:support-compat:26.1.0'
compile 'com.android.support:recyclerview-v7:26.1.0'
compile 'com.google.firebase:firebase-core:11.8.0'
compile 'com.android.support:cardview-v7:26.1.0'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
implementation 'com.google.android.gms:play-services-ads:11.8.0'
compile 'com.github.bumptech.glide:glide:3.7.0'
compile 'com.android.support:multidex:1.0.0'
}
apply plugin: 'com.google.gms.google-services'
```
In the application I have some videos in an array and others that are loaded from a server, I also use gif images and other resources. I have already compressed the resources to see if I have no problems but when running the application on a mobile with less range, it closes with the memory error insufficient. I use a Samung s7 for tests with 4gb of ram and even so when changing activity makes it slow. Please Help me
| My app consumes too much RAM, sometimes closed with java.lang.OutOfMemoryError: | CC BY-SA 3.0 | null | 2018-05-01T15:29:47.507 | 2018-05-01T17:53:40.317 | 2018-05-01T17:53:40.317 | 2,649,012 | 9,726,105 | [
"java",
"android",
"xml",
"mobile-development"
] |
50,144,513 | 1 | null | null | 1 | 5,157 | Thanks for reading my post.
I just started developing an app in Ionic 3 and there is an issue I ran into. I want to have a box to enter text into. When I use following code, I can enter both single line text as well as multiple line text.
`<ion-item> <ion-label>Message</ion-label> <ion-textarea [(ngModel)]="_message" name="message"></ion-textarea> </ion-item>`
But the issue is that the size of the box does not change. As I press Enter and type more words, the upper text hides because the view scrolls down. There is still space left in the view and I tried to adjust it, but couldn't.
Also, upon doing Google research, I did found a comment mentioning that this is a defect in Ionic Framework. But, I am not sure.
Thank You
| Ionic 3: Display text in multiple line | CC BY-SA 4.0 | null | 2018-05-02T22:33:32.443 | 2018-05-02T23:36:50.220 | null | null | 9,560,596 | [
"ionic-framework",
"ionic3",
"mobile-development"
] |
50,199,076 | 1 | 50,199,192 | null | 0 | 662 | I've created an application with CRNA. After some time I ejected it with "yarn eject" to have a possibility to configure native modules.
So now I have a question. Is there any possibility to use "exp publish"?
Before ejecting I used expo xde to publish my applications and run them via expo client.
Do I have the same functionality with the ejected application?
Thanks a lot!
| Expo ejected application | CC BY-SA 4.0 | null | 2018-05-06T11:18:07.537 | 2018-05-06T11:32:36.673 | null | null | 7,863,095 | [
"react-native",
"expo",
"mobile-development"
] |
50,268,409 | 1 | 50,269,383 | null | 18 | 43,785 | I have a `FlatList` component where I render x number of `TouchableHighlight`. I need all components in the `FlatList` aligned vertically to center.
The problem is that if I put `justifyContent: center` in `contentContainerStyle` nothing happens but, if I add `flex: 1` to `contentContainerStyle` I get the result I want. It is cool if I doesn't have to make scroll, but when I have a number of components in the `FlatList` that forces do scroll to see all of it the scroll start in the center of these list and don't let me scroll.
These is my code:
```
<FlatList
style = {{flex: 0.7, backgroundColor: 'red'}}
data = {this.props.actions}
contentContainerStyle = {{justifyContent:'center',}}
keyExtractor={(item, index) => index}
renderItem = {({item, index})=>{
return (
<TouchableHighlight
style = {{alignItems: 'center', margin: 8, paddingTop: 8, paddingBottom: 8, //flex: 1,
borderColor: ConstantesString.colorGrisFlojito, backgroundColor: '#d7deeb',
borderRadius: 10,
}}
underlayColor = {ConstantesString.colorAzulTouched}
onPress = {()=>{
item.action();
}}>
<Text
style = {{color: '#005288' , textAlign: 'center', fontSize: 20}}
>
{item.name}
</Text>
</TouchableHighlight>
)
}}
/>
```
I don't know if this is a bug or I am just doing bad.
| FlatList contentContainerStyle -> justifyContent: 'center' causes issues with scrolling | CC BY-SA 4.0 | 0 | 2018-05-10T08:12:18.657 | 2018-05-10T09:13:38.450 | null | null | 8,898,886 | [
"javascript",
"android",
"ios",
"react-native",
"mobile-development"
] |
50,280,067 | 1 | null | null | 0 | 13 | I want to set it up so users can invite their Facebook friends to join my social media app. Broadly speaking, the app lets users create groups of their friends. It would make things much easier for users if, when they're creating their groups and inviting friends to join, they could see a list of the Facebook groups that they're in and invite friends from within those, rather than just from a list of their Facebook friends in general.
Is this something that one can do with the Facebook APIs as they exist currently, or is it even possible to do? Is this information that Facebook would allow me to have? If you were trying to do this sort of integration, how would you go about doing it?
Thank you in advance for the help!
| If I set my iPhone app to include a Facebook login, can I access information about which Facebook groups users are involved in? | CC BY-SA 4.0 | null | 2018-05-10T19:19:28.380 | 2018-05-10T19:19:28.380 | null | null | 9,772,737 | [
"iphone",
"facebook",
"api",
"mobile",
"mobile-development"
] |
50,430,958 | 1 | null | null | 1 | 186 | in other words if I have android device with `android version 4.0.1` can I flash it's system.img to other device have the same android version .if not way
infact I tried but I get black screen
another question
as we know inside the there are the hardware drivers
so there is a relation between the kernel and the board.
is there arelation between system.img and the hardware ?
| Is there a relation between kernel and system.img | CC BY-SA 4.0 | null | 2018-05-20T01:40:26.743 | 2018-05-20T05:44:54.890 | 2018-05-20T05:44:54.890 | 8,385,855 | 9,817,483 | [
"android",
"kernel",
"mobile-development"
] |
50,439,347 | 1 | 50,439,425 | null | 1 | 632 | I am trying to make keyboard like this
[](https://i.stack.imgur.com/MI2Ag.png)
but instead I get this
[](https://i.stack.imgur.com/mzmh5.png)
Each my button is
```
class PinyinButton extends StatelessWidget {
final VoidCallback onPressed;
final List<String> titles;
PinyinButton({this.onPressed, this.titles});
@override
Widget build(BuildContext context) {
return new SizedBox(
width: 30.0,
height: 60.0,
child: new RaisedButton(onPressed: this.onPressed, child: new Column(
children: titles.map((title) => new Text(title)).toList()
))
);
}
}
```
and apparently each button or other container has some padding, which makes text to wrap early. How to remove this padding
| Can inscribe text into buttons in Flutter | CC BY-SA 4.0 | null | 2018-05-20T21:03:34.120 | 2018-05-20T21:13:51.503 | null | null | 258,483 | [
"user-interface",
"dart",
"flutter",
"mobile-development"
] |
50,456,191 | 1 | null | null | -1 | 50 | I am developing android app using android studio and java. But I found that I have to write code too lengthy. Can any other way to code android app with less line of code.
| How to code android app in small line of code? | CC BY-SA 4.0 | 0 | 2018-05-21T20:29:03.270 | 2018-05-21T20:36:30.117 | null | null | 9,825,042 | [
"android",
"mobile-development"
] |
50,581,885 | 1 | null | null | 0 | 52 | In my wallpaper android app I have first activity in which user selects any one image and go to the next activity, and in second activity I show preview of image. It is loading and taking long time. How can I reduce the loading time? on the same network obviously.
how can I preload this image?
I used Glide as well as Picasso no difference in loading time.
| How can i show large image in the starting of activity with minimum time? | CC BY-SA 4.0 | null | 2018-05-29T10:19:10.973 | 2018-05-29T12:53:47.553 | 2018-05-29T12:53:47.553 | 4,823,977 | 5,239,734 | [
"java",
"android",
"mobile-development"
] |
50,601,322 | 1 | 50,601,400 | null | -3 | 22 | Nice hybrid framework for both android/ios? I tried `ionic framework` and it's super easy to use but it slow compared to native framework.
| Any good frameworks for mobile? | CC BY-SA 4.0 | null | 2018-05-30T09:38:19.723 | 2018-05-30T09:41:14.310 | null | null | 9,844,826 | [
"mobile",
"mobile-development"
] |
50,767,158 | 1 | 50,767,425 | null | -2 | 44 | What are the basic ways in which i can achieve it?
| I want to develop a basic static content displaying Android app | CC BY-SA 4.0 | 0 | 2018-06-08T19:18:39.883 | 2018-06-12T13:50:44.683 | 2018-06-12T13:50:44.683 | 9,389,667 | 9,389,667 | [
"android",
"sqlite",
"firebase-realtime-database",
"storage",
"mobile-development"
] |
50,813,993 | 1 | 50,814,122 | null | 0 | 304 | sorry if this question was asked already, but I didn't find an answer.
I'm new to ios development and I already have an android application with an LoginActivity which redirects to an NavigationDrawer Activity when the login is successful.
Now I want to create the same functions for my IOS App.
Does an IOS solution already exist for this case, or are there any examples?
Best regards,
Patrick
| LoginView and NavigationDrawerController | CC BY-SA 4.0 | null | 2018-06-12T09:41:28.793 | 2018-06-12T11:01:52.530 | null | null | 8,874,363 | [
"ios",
"swift",
"mobile-development"
] |
50,860,554 | 1 | 50,860,588 | null | 0 | 1,348 | I'm trying to pass the values of inputs from html to ts file with ngModel. But I get an error. Here is my code, error, and versions.
```
signup.html
<ion-content padding>
<ion-label color="black" stacked>Ad - Soyad</ion-label>
<ion-input type="text" id="name_surname" [(ngModel)]="name" name='name'></ion-input>
<ion-label color="black" stacked>Kullanıcı Adı</ion-label>
<ion-input type="text" id="username" [(ngModel)]="username" name='username'></ion-input>
<ion-label color="black" stacked>Kullanıcı Mail Adresi</ion-label>
<ion-input type="email" id="email" [(ngModel)]="email" name='email'></ion-input>
<ion-label color="black" stacked>Kullanıcı Şifresi</ion-label>
<ion-input type="password" id="password" [(ngModel)]="password" name='password'></ion-input>
<ion-label color="black" stacked>Kullanıcı Şifresi - Tekrardan</ion-label>
<ion-input type="password" id="password_control" [(ngModel)]="password_control" name='password_control'></ion-input>
<ion-label color="black" stacked>Kullanıcı Tipi</ion-label>
<ion-input type="text" id="type" [(ngModel)]="type" name='type'></ion-input>
<button ion-button full (click)='signupHTTP()' id="signupButton">Giriş Yap</button>
</ion-content>
```
And here is my ts file
```
import { Component } from '@angular/core';
import { IonicPage, NavController, NavParams } from 'ionic-angular';
import { Observable } from 'rxjs/Observable';
import { HttpClient } from '@angular/common/http';
import { RequestServiceProvider } from '../../providers/request-service/request-service';
@IonicPage()
@Component({
selector: 'page-signup',
templateUrl: 'signup.html',
})
export class SignupPage {
constructor(public navCtrl: NavController, public navParams: NavParams, public httpClient: HttpClient, private requestService : RequestServiceProvider) {
}
signupHTTP(){
console.log(this.name);
}
}
```
[Error Screenshot](https://i.stack.imgur.com/WVPEp.png)
[My versions](https://i.stack.imgur.com/MRwKK.png)
| How to get ngModel value on Ionic? | CC BY-SA 4.0 | null | 2018-06-14T15:03:29.280 | 2018-11-04T14:46:03.950 | 2018-11-04T14:46:03.950 | 1,033,581 | 6,662,327 | [
"angular",
"ionic3",
"hybrid-mobile-app",
"angular-ngmodel",
"mobile-development"
] |
50,902,976 | 1 | null | null | 6 | 4,851 | Many third party whatsapp mods are developed with so many cool features like automatic replies, notifications when a person of interest comes online, message timer, etc.
When whatsapp hasn't released any source code and with reverse engineering becoming too tough how are these guys able to build such features?
| How do people develop WhatsApp mods like GBWhatsapp, etc (with extra features) when the source code of WhatsApp is not available? | CC BY-SA 4.0 | 0 | 2018-06-18T05:10:22.170 | 2022-10-22T13:58:26.520 | null | null | 4,623,016 | [
"android",
"whatsapp",
"mobile-development",
"mod"
] |
50,967,188 | 1 | null | null | 0 | 95 | I use react-native-navigation to create the navigation in my project, and I need to put the image instead of the icon and this is my code
```
const startTabs = () => {
Navigation.startTabBasedApp({
tabs: [
{
screen: "awesome-places.Product",
label: "first Icon",
title: "first Icon",
icon: require("../../../images/006-coffee-cup.png")
},
{
screen: "awesome-places.Bag",
label: "Icon",
title: "Icon"
}
]
});
};
```
the result is like this with blue color! [](https://i.stack.imgur.com/aGw8Y.png)
but the origion image like this : [](https://i.stack.imgur.com/xpC4A.png)
and I need to keep the color of the image, so how can I do it?
| React Navigation Icon in React Native | CC BY-SA 4.0 | null | 2018-06-21T11:15:46.980 | 2018-06-21T12:29:04.323 | null | null | 7,928,215 | [
"javascript",
"reactjs",
"react-native",
"styles",
"mobile-development"
] |
50,996,821 | 1 | null | null | 1 | 90 | I am developing a mobile app, where there is a requests class responsible for sending requests to the server. What is a good practice, to initialize this requests class in the constructor of the classes which access it and then call the functions, or declare the api functions as static so functions can be called with no prior initialization ?
| API request good practice | CC BY-SA 4.0 | null | 2018-06-23T00:01:29.007 | 2018-06-23T04:00:52.200 | null | null | 8,413,819 | [
"api",
"architecture",
"dart",
"mobile-development"
] |
51,071,892 | 1 | 51,123,181 | null | 0 | 1,511 | I am new to app development and have been using the ionic framework to build my app. I am ready to publish, and want to use ionic deploy, as it seems efficient.
My question is do I need to upload my app to Apple/play store before I can use Ionic deploy, or can I use ionic deploy when publishing for the first time?
| Publishing app with Ionic deploy iOS, and android | CC BY-SA 4.0 | null | 2018-06-27T21:47:41.987 | 2018-07-01T12:11:07.707 | null | null | 5,389,516 | [
"ionic-framework",
"app-store",
"mobile-development"
] |
51,090,743 | 1 | null | null | 0 | 25 | Is it possible to programm an app that runs in the background and get the information when you open an app, checks if its a special app (f.ex. youtube) and then get a popup/ push? Or does this already exists?
| Popup when opening an app | CC BY-SA 4.0 | null | 2018-06-28T20:25:43.673 | 2018-06-28T20:25:43.673 | null | null | 9,871,686 | [
"java",
"android",
"android-studio",
"mobile-development"
] |
51,275,913 | 1 | 51,275,946 | null | 1 | 485 | I am getting started on Android development and I've had trouble finding answers since I may not know how to word things properly. What I am trying to do is setting all buttons invisible once I click on any button. The easy way out of it is this:
```
Button button1 = findViewById(R.id.button1);
Button button2 = findViewById(R.id.button2);
Button button3 = findViewById(R.id.button3);
Button button4 = findViewById(R.id.button4);
setInvisible(button1);
setInvisible(button2);
setInvisible(button3);
setInvisible(button4);
```
However I feel like this goes against the DRY principle of programming. I mean what if there were 100 buttons?
After doing some thinking, I imagine I can use a loop and have i be the place holder for the numbers of each button. That way it would loop through every single one. However I am not sure on what methods to use.
| How do I efficiently change a property to multiple views/buttons in Android Studio? | CC BY-SA 4.0 | null | 2018-07-11T01:17:18.857 | 2021-05-27T13:46:56.230 | 2021-05-27T13:46:56.230 | 3,824,919 | 10,061,975 | [
"java",
"android",
"view",
"mobile-development"
] |
51,343,567 | 1 | 51,343,869 | null | 6 | 21,394 | I am new to Dart and Flutter and try to append a new item to my ListView. I created a button that increments `this.value` but nothing happens. Am I missing an update call on the UI and is this even the correct approach?
Since I return the value of `ListView.builder` directly to the caller of `build` I am not sure how to get the list to add more items. Thanks a lot!
```
class MyList extends State<MyList> {
...
int value = 2;
@override
Widget build(BuildContext context) {
return ListView.builder(
itemCount: this.value,
itemBuilder: (context, index) => this._buildRow(index)
);
```
Is calling `setState` the correct way to trigger an UI update?
| Append items dynamically to ListView | CC BY-SA 4.0 | null | 2018-07-14T21:36:33.157 | 2018-07-14T22:43:19.457 | 2018-07-14T21:48:52.610 | 10,050,942 | 10,050,942 | [
"mobile",
"dart",
"flutter",
"mobile-development"
] |
51,347,652 | 1 | null | null | -2 | 78 | Is there any way how to create my own custom keyboard only for my application (not system keyboard), without the need for the user to change the keyboards in settings and without the need for me to specify for every `EditText` to use the keyboard?
Basically what I am trying to find is a way how to tell my application to use the custom keyboard by default.
| How to create a custom keyboard to use by default on all inputs in the application? | CC BY-SA 4.0 | null | 2018-07-15T10:49:55.197 | 2018-07-15T11:31:28.237 | 2018-07-15T11:31:28.237 | 2,649,012 | 872,755 | [
"java",
"android",
"mobile",
"mobile-development"
] |
51,350,006 | 1 | 51,350,041 | null | 2 | 455 | Can someone explain me where I should define a scroll controller? I have chat list view which is the body of a scrollable view. I want to be able to control the scrolling behaviour from `MainView` but don't know how to pass the controller down to `_ChatListView`. Any ideas?
```
class MainView extends StatelessWidget {
...
// is this the correct place?
final ScrollController scrollController = ScrollController();
@override
Widget build(BuildContext context) {
return new Scaffold(
body: new ChatListView()
);
}
}
```
```
class ChatListView extends StatefulWidget {
@override
_ChatListView createState() => _ChatListView();
}
class _ChatListView extends State< ChatListView > {
Widget build(BuildContext context) {
return ListView.builder(
controller: scrollController,
);
}
}
```
| Scrollable Listview in Flutter with Dart | CC BY-SA 4.0 | 0 | 2018-07-15T16:04:54.267 | 2018-07-15T16:10:43.480 | null | null | 10,050,942 | [
"dart",
"flutter",
"mobile-development"
] |
51,351,415 | 1 | 51,351,522 | null | 1 | 126 | Could someone help me with the following issue? I am not sure if this is a bug or intended behaviour. I have the following layout:
```
Column(
Flexible( ListView[..] )
Row(
Flexible(
TextField(..) <-- input field
),
Container(Icon[]) <-- button
)
```
Scrolling very very quickly makes the content of my ListView getting drawn over the Row in the other container? Could this be a bug in Flutters drawing engine or did I miss to set some boundaries for my ListView?
---
# Normal / expected layout:
[](https://i.stack.imgur.com/VjBqr.png)
---
# After scrolling very quickly:
[](https://i.stack.imgur.com/IgnIl.png)
| Content of Listview gets drawn over UI elements below in Flutter | CC BY-SA 4.0 | null | 2018-07-15T19:13:16.600 | 2018-07-15T19:26:35.460 | 2018-07-15T19:19:37.067 | 10,050,942 | 10,050,942 | [
"mobile",
"dart",
"flutter",
"mobile-development",
"drawingcontext"
] |
51,399,011 | 1 | 51,421,551 | null | 0 | 246 | I have been implementing GOOGLE CONTACT API v3 (below is the link)([https://developers.google.com/contacts/v3/](https://developers.google.com/contacts/v3/))
I have followed the documentation and added all supported required Libraries into my app and all dependencies error have gone from my code
But when I tried run/building, it shows me this error
> Program type already present: com.google.gdata.client.Query$CategoryFilter
Message{kind=ERROR, text=Program type already present: com.google.gdata.client.Query$CategoryFilter, sources=[Unknown source file], tool name=Optional.of(D8)}
I tried googleing but didnt found exact error solution but I have noticed that most fix for this kind of issue is to up/downgrade build version
So, i was building on api 28 so I downgraded to 27.1.1 but same error
this is how my build.gradle looks
```
apply plugin: 'com.android.application'
android {
compileSdkVersion 27
defaultConfig {
applicationId "com.murtaza.contactsync"
minSdkVersion 15
targetSdkVersion 27
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
implementation files('libs/gdata-core-1.0.jar')
implementation files('libs/gdata-client-1.0.jar')
implementation files('libs/gdata-contacts-3.0.jar')
implementation files('libs/guava-11.0.2.jar')
}
```
and this are all the import
```
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import com.google.gdata.client.*;
import com.google.gdata.client.contacts.*;
import com.google.gdata.data.*;
import com.google.gdata.data.contacts.*;
import com.google.gdata.data.extensions.*;
import com.google.gdata.util.*;
import java.io.IOException;
import java.net.URL;
```
please guide me where and what Im doing wrong or How to fix this issue so that I can implement google contact api v3
I have used exact documented code for this
please help me here
| Program type already present: com.google.gdata.client.Query$CategoryFilter | CC BY-SA 4.0 | null | 2018-07-18T09:56:13.543 | 2018-07-19T11:29:44.290 | null | null | null | [
"android",
"google-contacts-api",
"mobile-development"
] |
51,414,238 | 1 | 51,414,958 | null | -3 | 121 | I got small `containerView` with `UILabel` on main app screen. I got `UIButton` on main `UIViewController`. I want to change text of `label` that belongs to `containerView` class by clicking button in `UIViewController`.
I try to make it with delegation, but for some reason i got a mistake (Unwraping optional)...
I try to make it with Protocol, bud method "addText" in ContView dont works((((((
```
class ViewController: UIViewController {
var delegate: DelegateProtocol?
override func viewDidLoad() {
super.viewDidLoad()
}
@IBAction func button(_ sender: Any) {
delegate?.addText(String2: "123")
}}
```
///////////////////////////////////////////////////////////////////////
```
protocol DelegateProtocol {
func addText(String2: String)
}
```
//////////////////////////////////////////////////////////////////////
```
class ContViewController: UIViewController, DelegateProtocol {
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "con" {
let vc = segue.destination as! ViewController
vc.delegate = self
}
}
func addText(String2: String) {
label.text = String2
}
@IBOutlet weak var label: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
}
}
```
| Change Label text in a ContainerView on click of a button from other class (Uiviewcontroller) | CC BY-SA 4.0 | null | 2018-07-19T04:12:29.137 | 2018-07-21T08:54:45.623 | 2018-07-21T08:54:45.623 | 9,217,143 | 9,217,143 | [
"ios",
"swift",
"mobile-development"
] |
51,593,523 | 1 | null | null | 0 | 64 | Designed a new template for my website but navigation bar (Menu) in mobile not scrolling.
Site menu is working on Hover function. Site menu is working fine in laptop desktop but when we are checking in smartphone then after open mega menu its not scrolling to see all submenu. When we are trying to scroll menu then its scrolling page not menu.
Please suggest me if we are missing any code. Site is here [http://rsseosolution.com/newsite/](http://rsseosolution.com/newsite/)
| In Smart phones navigation bar (Menu) or my new design not scrolling | CC BY-SA 4.0 | null | 2018-07-30T12:00:29.857 | 2018-07-30T17:33:14.997 | 2018-07-30T17:31:34.863 | 472,495 | 6,861,670 | [
"html",
"css",
"mobile-development"
] |
51,814,635 | 1 | 51,815,923 | null | 1 | 700 | I want to take advantage of dependency injection in my Xamarin project but can't get constructor injection to work in C# classes behind XAML views. Is there any way to do it ?
I've seen guides how to setup dependency injections in View Models, to later use them as repositories but that doesn't work for me.
So far I tried Ninject and Unity.
Code:
This is the service I want to use inside of my PCL project:
```
public class MyService : IMyService
{
public void Add(string myNote)
{
//Add Note logic
}
}
```
Interface:
```
public interface IMyService
{
void Add(string myNote);
}
```
Unity setup in App.Xaml:
```
public App ()
{
InitializeComponent();
var unityContainer = new UnityContainer();
unityContainer.RegisterType<IMyService, MyService>();
var unityServiceLocator = new UnityServiceLocator(unityContainer);
ServiceLocator.SetLocatorProvider(() => unityServiceLocator);
MainPage = new MainMasterMenu(); //<-- feel that I'm missing something here as I shouldn't be creating class instances with DI, right ?
}
```
Usage that I'd like to see. This is .CS file behind a XAML starting page:
```
[XamlCompilation(XamlCompilationOptions.Compile)]
public partial class MainMasterMenu : MasterDetailPage
{
private IMyService _myService;
public MainMasterMenu(IMyService myService)
{
_myService = myService
}
private void SomeFormControlClickEvent(object sender, ItemChangedEventArgs e)
{
_myService.Add("hi");
}
}
```
| Constructor Injection in Xamarin Froms .xaml.cs file classes | CC BY-SA 4.0 | null | 2018-08-13T02:55:17.413 | 2018-08-13T05:54:58.740 | null | null | 1,193,841 | [
"c#",
"xamarin",
"dependency-injection",
"xamarin.forms",
"mobile-development"
] |
51,827,387 | 1 | 51,828,089 | null | 1 | 1,592 | In Xamarin forms I want to use an image ( png file ) I created as background for a side "hamburger" menu. For example, here is some menu:
[](https://i.stack.imgur.com/Ca88U.png)
Two questions:
1) What's the best image size to use for the menu background
2) How do I put a ListView that contains my menu options on top of the background image ?
I tried using the grid but wasn't successful at stacking them. Code below is a quick summary of how the MasterDetailPage is structured.
```
//Menu
<MasterDetailPage.Master>
<ContentPage>
<ContentPpage.Content>
<AbsoluteLayout> //Also tried FlexLayout and RelativeLayout
<Image Source="blah" Aspect="Fill"/>
<Grid>
<ListView/>
</Grid>
</AbsoluteLayout>
</ContentPpage.Content>
<ContentPage>
</MasterDetailPage.Master>
//Page content
<MasterDetailPage.Detail>
<ContentPage>
///Page content
</ContentPage>
</MasterDetailPage.Detail>
```
The goal is to get the side menu looking something like this:
[](https://i.stack.imgur.com/0Szl9.jpg)
| Set navigation side menu background image in Xamarin Forms | CC BY-SA 4.0 | 0 | 2018-08-13T17:09:08.533 | 2018-08-13T18:01:00.520 | null | null | 1,193,841 | [
"c#",
"user-interface",
"xamarin",
"xamarin.forms",
"mobile-development"
] |
51,926,190 | 1 | null | null | 0 | 60 | I have followed all instruction as in docs, but couldn't start my first react native app.Node -v v8.11.4, npm 4.6.1, react-native-cli 2.0.1
See Error Image Here:
[](https://i.stack.imgur.com/Nlmmc.png)
Thanks in advance!
| React Native Configuration Return Error 500, Followed React Native Docs | CC BY-SA 4.0 | null | 2018-08-20T07:46:42.037 | 2019-08-01T08:50:56.520 | 2019-08-01T08:50:56.520 | 8,235,971 | 9,497,778 | [
"react-native",
"mobile-development",
"react-native-cli"
] |
51,995,961 | 1 | 53,342,988 | null | 2 | 1,223 | Displaying videos in ionic 3 issue | CC BY-SA 4.0 | null | 2018-08-24T00:29:34.523 | 2018-11-16T17:49:29.690 | null | null | 10,098,981 | [
"html",
"ionic-framework",
"ionic3",
"mobile-development"
] |
|
52,108,821 | 1 | 52,108,994 | null | 0 | 52 | I am learning to program in `apache-cordova`. If I create a platform independent mobile application in `apache cordova`, does my Android or iPhone require to download any special packages to run the cordova app?
Can all Android/iPhone devices run a cordova app naturally with out having to download any extra plugins/packages?
Or will my clients have to download anything to their Android/iPhone devices to run my cordova app?
Thank you all in advance for the help or answers.
UPDATE : some body has negative voted my question.. So everybody please positive vote my question to give me more positive votes. Thank you
| Can all Android/iPhone devices run any Cordova app by default? | CC BY-SA 4.0 | 0 | 2018-08-31T05:13:45.487 | 2021-12-12T15:52:02.033 | 2021-12-12T15:52:02.033 | 10,298,339 | 10,298,339 | [
"android",
"iphone",
"cordova",
"mobile-development"
] |
52,209,104 | 1 | 52,209,881 | null | 3 | 3,677 | I'm very new to react native and somehow I was able to display a map and some markers on it. But I need to read set of locations (coordinates) from a remote server and display on map. In other words, makers need to be change their locations.
I tried a few difference ways, but any of those didn't help. If anyone has previous experience please help.
Following is my existing code.
```
import React, {Component} from 'react';
import {Platform, StyleSheet, Text, View} from 'react-native';
import MapView, {PROVIDER_GOOGLE} from 'react-native-maps';
import {Container, Header, Content, Footer, FooterTab, Title, Button, Icon} from 'native-base';
export default class App extends Component<Props> {
constructor(props) {
super(props);
this.state = {
latitude: 6.9212768,
longitude: 79.9610316,
error: null,
friends: [],
};
}
componentDidMount() {
navigator.geolocation.watchPosition(
(position) => {
console.log("wokeeey");
console.log(position);
this.setState({
latitude: position.coords.latitude,
longitude: position.coords.longitude,
error: null,
});
//TODO: send user location to server
},
(error) => this.setState({error: error.message}),
{enableHighAccuracy: false, timeout: 200000, maximumAge: 1000},
);
//API call to get friends
this.setState({
friends: [
{
latitude: 6.9243768,
longitude: 79.9612316,
key: "friend 1"
},
{
latitude: 6.9213768,
longitude: 79.9641316,
key: "friend 2"
}
],
});
}
render() {
contents = this.state.friends.map((item) => {
return (
<MapView.Marker
key={item.key}
coordinate={{"latitude": item.latitude, "longitude": item.longitude}}
title={item.key}/>
);
});
return (
<Container>
<MapView
provider={PROVIDER_GOOGLE}
style={styles.container}
showsUserLocation={true}
showsMyLocationButton={true}
zoomEnabled={true}
followsUserLocation={true}
initialRegion={{
latitude: this.state.latitude,
longitude: this.state.longitude,
latitudeDelta: 0.0158,
longitudeDelta: 0.0070
}}
>
{!!this.state.latitude && !!this.state.longitude && <MapView.Marker
coordinate={{"latitude": this.state.latitude, "longitude": this.state.longitude}}
title={"You're here"} pinColor={'#3498db'}
/>}
<View>{contents}</View>
</MapView>
</Container>
);
}
}
```
| react-native-maps: How to update user location recieved from remote server periodically | CC BY-SA 4.0 | 0 | 2018-09-06T17:08:25.417 | 2018-09-07T01:33:43.180 | 2018-09-06T21:13:49.130 | 6,569,224 | 3,310,923 | [
"android",
"react-native",
"react-native-maps",
"mobile-development"
] |
52,265,061 | 1 | null | null | 0 | 45 | I am currently making an app with interstitial ads. I have setup everything, but when I tested the ads (in test mode) I got nothing even after waiting for a week.
Now, the thing is, that Google's provided Test Ads (in their documentation) work perfectly fine. So my code has to be right as well. So I have to have misconfigured something...
The thing is, I don't know what. I have added my payment options, gotten an "your account is activated" email, used the right id and my ad is active. Any advice?
PS: I have got an Email from Google AdWords which wants me to call Google in order to complete the AdWord Setup, but that hasn't anything to do with AdMob, now has it?
| AdMob - Example Ads work, my own Interstitial doesn't | CC BY-SA 4.0 | null | 2018-09-10T20:31:57.720 | 2018-09-10T20:31:57.720 | null | null | 10,233,170 | [
"android",
"interstitial",
"admob",
"mobile-development"
] |
52,297,099 | 1 | null | null | 0 | 50 | I want to detect offline mobile phones in a specific area, they are offline no GPS and no internet. I have an application and it should take an action when it detects that it is in the area.
the area may be a floor on a building or even a room.
Can I set a repeater device and wait for its signal to show up then to take an action based on the Cell Id?
knowing that I don't need the mobile phone to connect the repeater.
is there a better approach?
| Do Cell Phone Repeaters have CID and LAC? | CC BY-SA 4.0 | null | 2018-09-12T14:04:39.863 | 2018-09-24T10:34:30.667 | null | null | 4,688,694 | [
"mobile-development",
"telecommunication"
] |
52,522,602 | 1 | 52,523,594 | null | 3 | 5,018 | I am getting an error 'linker command failed with exit code 1' when I try to build my mobile app in Xcode for the iPhone. In looking up solutions to fix this I came across this advice:
"the suprojects should be removed, which is everything under Libraries inside Xcode."
(solution found here) [https://github.com/auth0/react-native-lock/issues/3](https://github.com/auth0/react-native-lock/issues/3)
But I cannot find an Xcode folder on mac that contains a Libraries folder within it. Does anyone know where this is located at??
| Where is the libraries folder in Xcode? | CC BY-SA 4.0 | null | 2018-09-26T16:46:16.233 | 2018-12-29T17:11:50.803 | 2018-09-26T17:50:31.440 | 1,226,380 | 1,226,380 | [
"ios",
"xcode",
"react-native",
"mobile-development"
] |
52,669,467 | 1 | 54,171,212 | null | 22 | 4,655 | I am "a bit" confused in understanding of what of those two services are capable for and what are the core differences between of them.
In general, I understand what they provide, and separately I used them both earlier (VSTS as issue tracker, mostly), and AppCenter for the sources to be built and deployed.
However:
`building``publishing`.
In DevOps has the option of setting up the Pipeline:
[](https://i.stack.imgur.com/Yr58v.png)
Same way as AppCenter has mostly the same:
[](https://i.stack.imgur.com/t7BzD.png)
`Tests`.
.
AppCenter - with "Stores" section, and DevOps with [this plugin](https://blogs.msdn.microsoft.com/devops/2016/08/25/continuous-delivery-of-ios-applications-with-team-services/) (at least).
They both also have some specific features (like AppCenter has PushNotifications functionality and Azure DevOps has issue tracking), however, .
So, which of them should be used for what particular tasks? Or this is just one the modern "marketing" feature of Microsoft, when there is mostly no difference, but those are just two similar thing wrapped with different-colored envelope?
| What's the principal difference between MS AppCenter and Azure DevOps (former VSTS)? | CC BY-SA 4.0 | 0 | 2018-10-05T16:00:41.303 | 2019-01-13T17:07:51.500 | 2018-10-05T16:17:09.333 | 4,044,696 | 691,660 | [
"azure-devops",
"app-store",
"mobile-development",
"visual-studio-app-center"
] |
52,679,493 | 1 | 52,732,850 | null | 0 | 266 | I am working on a xamarin forms project which have a carousel page container, and content pages as its children are created dynamically on different condition checks. (Minimum 8 children in my case)
Let's take the mentioned minimum case. I enter some values in entry/picker controls in the 1st child and then navigate/swipe pages till 5th child. When I came back to the first child page, the values I entered/selected are now vanished/refreshed.
I have noticed that carousel page saves only in it. i.e. (Left Page, and the Right Page).
And Tabbed page saves .
I want the values to stay in the child page where I entered whether I navigate to the last most page or in the middle and navigate back to that page.
I have googled via the letters as "" etc. but unable to find something useful.
So, I need to know the etc. by which xamarin forms setting the limit of carousel page as 3 and tabbed page as 4.
Waiting for your response.
Thanks.
| Xamarin Forms: Values vanished/refreshed on swiping more than four content pages inside carousel page or tabbed page | CC BY-SA 4.0 | 0 | 2018-10-06T13:22:19.537 | 2022-03-17T12:55:42.627 | null | null | 10,042,055 | [
"xamarin",
"xamarin.forms",
"carousel",
"mobile-development",
"tabbedpage"
] |
52,696,766 | 1 | null | null | 0 | 35 | I have a React Native app and such a confusing case.
Let's say, my app is an online food delivery app. I would like to create an order. When I create an order, I call API request to the server. While waiting to create the order, my app shows a loader. And suddenly, my app goes offline (bad internet connection). And I use apisauce library, which I put timeout for API request. Because of my app is offline, I can't receive the response and eventually the request timeout. The app shows up unable to create order prompt. But in the server, the order is created.
Is there any way out, to solve this ? If the app suddenly offline, can I terminate the request ? Or can I receive any response whenever my app is getting back online ?
Please give me any suggestions, whether I should modify my app or the backend server to handle this issue.
Thank you
| How can I terminate mobile app order transaction? | CC BY-SA 4.0 | null | 2018-10-08T06:46:09.860 | 2018-10-08T06:46:09.860 | null | null | 8,673,809 | [
"android",
"ios",
"react-native",
"backend",
"mobile-development"
] |
52,753,992 | 1 | null | null | 1 | 1,112 | Apple has rejected the iOS application uploaded to the App Store. I have developed an application which installs the signed configuration profile (.mobileconfig) in the iOS device.
I am unable to figure out which public API I have used in an unapproved manner.
1. Is it the HTTP requests which downloads configuration profile from the server and then prompt the user to install it?
2. I am validating whether the profile has been installed in the iOS device or not using Security Framework (SecCertificate, SecPolicy, SecTrust etc.). I am not sure if this is the problem.
3. What else should I look for figure out that particular Public API?
Additionally, your app uses public APIs in an unapproved manner, which does not comply with guideline 2.5.1 of the App Store Review Guidelines.
Since there is no accurate way of predicting how an API may be modified and what effects those modifications may have, Apple does not permit unapproved uses of public APIs in App Store apps.
Please revise your app to ensure that documented APIs are used in the manner prescribed by Apple.
| Binary Rejected: Your app uses public APIs in an unapproved manner | CC BY-SA 4.0 | 0 | 2018-10-11T06:53:27.367 | 2019-04-29T04:59:46.040 | 2018-10-11T09:29:49.147 | 2,227,743 | 4,910,796 | [
"ios",
"iphone",
"mobile-development",
"configuration-profile"
] |
52,757,354 | 1 | null | null | 0 | 903 | I am getting the data from the user in a new user registration screen. After clicking the register button, the data are getting saved in the database. I am using an input field called promocode, to check for the user's promo code. Here's what I need:
I am having a set of promocodes already in a database table. If the user types a promocode, and if the particular code exists in my database table, it can allow the user to register in my app. Suppose if the user is typing a promocode that is not in my database table, it should display toast message as invalid promocode and so that the user is not allowed to register. This promocode validation should happened after the user fill all the details and after clicking the submit button.
Here's what I have tried so far:
In my HTML:
```
<ion-item>
<ion-icon name="ios-hand" class="iconstyle" item-left></ion-icon>
<ion-label color = "textcolor" floating>Reseller Promo Code</ion-label>
<ion-input type="text" class="textcolor" [(ngModel)] = "vm.promocode" formControlName = "promocode" maxlength = "15" tabindex="2" (keyup)="moveFocus($event,query, false)" >
</ion-input>
</ion-item>
```
In my ts file:
```
import { Component } from '@angular/core';
import {IonicPage, NavController, NavParams } from 'ionic-angular';
import {SignupService} from '../../services/signup.service';
import { MessageService } from '../../services/message.service';
import { BroadCastService } from '../../services/broadcast.service';
import { isNullOrUndefined } from 'util';
import { Signup } from '../../models/signup';
import { FormGroup, FormControl, Validators, AbstractControl} from '@angular/forms';
import { LoginPage } from '../login/login';
@IonicPage()
@Component({
selector: 'page-signup',
templateUrl: 'signup.html',
providers: [SignupService]
})
export class SignupPage{
formsignup: FormGroup;
submit(){
if (this.formsignup.valid) {
this.signupservice.savesignup(this.vm).subscribe(res=>{
console.log(res);
this.message.alert("Your account has been created successfully");
this.resetForm(this.formsignup);
this.navCtrl.push(LoginPage);
});
}
else{
this.validateFormControl(this.formsignup);
}
}
```
This is my service.ts file where I am posting the user details to the server and saving it in the database.
```
import { Injectable } from "@angular/core";
import { DataService } from "./data.service";
@Injectable()
export class SignupService {
constructor(private dataservice: DataService) {
}
savesignup(formdetails:any){
return this.dataservice.post('/api/Login/Register', formdetails);
}
}
```
In my model class I have used this promocode as follows:
signup.ts:
```
export class Signup{
promocode: string;
```
Now everything is working fine. All my data are saving in the database and I can able to login with the registered account. But I don't know how to implement this functionality. I am new to Ionic.
| How can I check for valid promo code in my Ionic 3 Angular app against the database table? | CC BY-SA 4.0 | null | 2018-10-11T10:03:05.903 | 2019-03-12T19:35:08.780 | 2019-03-12T19:35:08.780 | 472,495 | 10,176,134 | [
"angular",
"ionic-framework",
"ionic3",
"hybrid",
"mobile-development"
] |
53,166,281 | 1 | 53,166,431 | null | 1 | 698 | Can one show an interstitial ad when the user clicks a button and if the user cancel the ad, he/she would be directed to a website.
So, is the adMob's policy been broken: Interstitial ad should not be shown as the user exits the app.
Clearly here, the user was not intended to actually 'exit' the app, but it's a implicit feature of the app.
I researched a lot but there was no one similar to my problem, I even posted this problem on quora, Google's adMob sdk help forums and even in gmail help forums, but there were no replies.
Thank you for answering.
| Showing interstitial adMob ad when the user exits the app but not by intention | CC BY-SA 4.0 | null | 2018-11-06T05:36:21.650 | 2018-11-06T08:05:23.793 | null | null | 10,081,385 | [
"android",
"admob",
"interstitial",
"mobile-development"
] |
53,172,160 | 1 | 53,179,808 | null | 0 | 104 | So my app have been successfully developed and I have had a good experience with the admob test ads. But then just now I tried to view how real ads look like on my app and I started testing with real ads(banners+Interstitial) with keeping in mind: not to click them!
The impressions gets to be 6 and match rate 100%, will this cause me any trouble?? I am new to adMob but I did followed all policies correcty, though I don't know if self impressions are a big deal or not.
Please reply. Thanks.
| Can testing with real adMob ads after the app's development results in adMob's policy violation? | CC BY-SA 4.0 | 0 | 2018-11-06T12:42:47.867 | 2018-11-06T20:50:04.413 | null | null | 10,081,385 | [
"android",
"admob",
"mobile-development"
] |
53,248,555 | 1 | null | null | 0 | 41 | I'm totally new to Java and Android Studio. I wanted to know how to create a box dialogue or whatever the correct term is to create a box where the user can type and whatever he writes will be stored under a variable?
Context: I'm creating a home security device. The purpose of the app would be for the user to insert their phone number so they could get SMS notifications on the state of their doors that is monitored by external sensors on a Raspberry Pi. Once I know how to take in user input in Android studio and save it under a variable I can then save it to a file and using Python read from that file and then do whatever I need to with the phone number. Ideally, I understand this would have been done in just Java but learning another language with my novice understanding at this stage is too slow to make this project happen on time, hope you understand and ignore my lack of knowledge in this area.
Thanks ahead!
| How to create a box for user input and then store it as a variable in Android Studio | CC BY-SA 4.0 | null | 2018-11-11T12:05:22.673 | 2018-11-11T16:55:49.043 | 2018-11-11T16:55:49.043 | 5,455,156 | 9,467,648 | [
"java",
"android",
"android-studio",
"raspberry-pi3",
"mobile-development"
] |
53,370,179 | 1 | null | null | 0 | 38 | How can I draw a line on a map to detect a live location on that line.
but the line won't be on a road (street), it is a well known line on the map
using google map API.
| Draw a line on a map but the line not a road | CC BY-SA 4.0 | null | 2018-11-19T07:36:59.833 | 2018-11-21T15:03:10.680 | null | null | 3,034,358 | [
"android",
"mobile-development"
] |
53,378,308 | 1 | null | null | -1 | 906 | whenever I run "ionic cordova run android" and deploy the apk in the real device, I got error message: Access to XMLHttpRequest at '[http://XXXX/mobile/data/1/XXXX](http://XXXX/mobile/data/1/XXXX)' from origin '[http://localhost:8080](http://localhost:8080)' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: Redirect is not allowed for a preflight request.
(this works in the ionic simulator by adding the proxy in config file, but not the real device).
Does anyone face this problem as well?
here is my ionic info:
ionic (Ionic CLI) : 4.2.1 (/usr/local/lib/node_modules/ionic)
Ionic Framework : ionic-angular 3.9.2
@ionic/app-scripts : 3.2.0
Cordova:
cordova (Cordova CLI) : 8.1.2 (cordova-lib@8.1.1)
Cordova Platforms : android 7.1.2
Cordova Plugins : cordova-plugin-ionic-keyboard 2.1.3, cordova-plugin-ionic-webview 2.2.3, (and 8 other plugins)
System:
NodeJS : v8.12.0 (/usr/local/bin/node)
npm : 6.4.1
OS : macOS High Sierra
| ionic run with CORS problem on mobile device | CC BY-SA 4.0 | null | 2018-11-19T15:53:37.587 | 2023-01-23T19:43:44.863 | null | null | 1,156,202 | [
"cordova",
"ionic-framework",
"cors",
"ionic4",
"mobile-development"
] |
53,860,459 | 1 | null | null | 1 | 281 | We are working on a requirement which includes creating an "Admin Panel" to send announcements/push notifications to different user populations of a mobile application for things such as: Application Updates, System Outages, Service Announcements, etc, based on certain user parameters such as roles and other properties. We are currently sending as this user properties to our Firebase project from Android and iOS versions of a mobile application.
The solution of sending push notifications to different user segments and specially the flexibility of segmenting users with relational operators over the user properties is a fundamental requirement for which we though of using Analitycs user segments to target specific notifications dynamically. See source: [https://firebase.googleblog.com/2017/03/updates-to-firebase-notifications-reach.html](https://firebase.googleblog.com/2017/03/updates-to-firebase-notifications-reach.html)
Some of the user properties we send to Firebase and we would like to leverage to segment the push notifications are not static and could change in a short time period which may not be reflected in the mobile application immediately, however we did not find a way of updating user properties from the server side (i.e: from a process driven from the data source systems) and relying on users using the mobile app to push/update their user properties updates to Firebase will not suffice to keep the segments up to date and audiences accurate (users may take some time to come back and open the mobile app long after a user property changed).
Is this limitation of user properties not being manageable through REST endpoints or any other way from the server intentional? Is there any other product or alternative that could help achieving the objective described above? Any recommendations out there?
We discarded using Firebase topics due to the dynamic nature of the filtering requirements for segments. Maintaining topics up to date with the right population of users would have performance costs and serious scalability issues. AWS Pinpoint was evaluated too although the integration with Firebase doesn't seem to be working very well hence we discarded it.
| Will it ever be possible to update Firebase user properties from the server side? | CC BY-SA 4.0 | null | 2018-12-19T23:13:14.807 | 2018-12-19T23:13:14.807 | null | null | 10,761,077 | [
"firebase",
"push-notification",
"firebase-cloud-messaging",
"mobile-development",
"mobile-devices"
] |
53,971,138 | 1 | 53,971,613 | null | 6 | 7,541 | my app should have a login screen, with Google, so when signed in it goes to the menu screen.
in order to not go back to the login screen when pressing the back button, after getting to the menu screen after the authentication.
I've separated the stacks one for the login and one for the other screens
in App.js:
```
const AuthStack = createStackNavigator({
LoginSplashScreen: LoginSplashScreen
});
const AppStack = createStackNavigator({
MenuScreen:MenuScreen,
DetailsScreen: DetailsScreen,
PhotoScreen: PhotoScreen,
DocumentScreen: DocumentScreen,
AudioScreen: AudioScreen,
ScheduleScreen: ScheduleScreen,
SettingsScreen: SettingsScreen,
FilesScreen: FilesScreen,
GalleryScreen: GalleryScreen
});
const Root= createAppContainer(createSwitchNavigator(
{
AuthStack:AuthStack,
AppStack:AppStack
},
{
initialRouteName: 'AuthStack',
}
));
export default class App extends React.Component {
render() {
return (
<Root/>
)
}
}
```
so in the LoginSplashScreen
after authenticating I used this code to navigate:
```
this.props.navigation.navigate('AppStack', {
signedIn: true,
name: result.user.name,
photoUrl: result.user.photoUrl
});
```
the navigation works great, but the parameters 'name','signedIn','photoUrl'
do not pass
in fact, when alerting
```
Alert.alert('',JSON.stringify(this.props.navigation.state.params))
```
on the menu screen(second stack), it is empty
I managed to solve this specific problem with setting a global parameter with:
```
global.param= result.param;
```
but, I still need an answer for passing between 2 separated stacks
| pass parameters between two stacks - React Native | CC BY-SA 4.0 | 0 | 2018-12-29T16:06:11.470 | 2021-03-16T15:09:53.747 | 2018-12-29T16:21:22.497 | 9,615,185 | 9,615,185 | [
"android",
"react-native",
"mobile-development"
] |
54,129,884 | 1 | 55,079,405 | null | 5 | 8,736 | [](https://i.stack.imgur.com/GHW4L.png)
How could I achieve this layout in Flutter?
| How can I float text around an image in Flutter? | CC BY-SA 4.0 | 0 | 2019-01-10T13:34:46.627 | 2019-03-09T16:24:23.143 | null | null | 4,457,867 | [
"dart",
"flutter",
"mobile-development"
] |
54,156,247 | 1 | null | null | 0 | 351 | I'm trying to get a DropdownButton to display inside a ListView. Although the ListView code is in another file, this button is a direct child of that ListView.
Trying to add the widget directly did not work, giving this error:
```
I/flutter (22767): RenderIndexedStack object was given an infinite size during layout.
I/flutter (22767): This probably means that it is a render object that tries to be as big as possible, but it was put
I/flutter (22767): inside another render object that allows its children to pick their own size.
```
So I attempted to put it inside a simple Column/Flexible combination with nothing else added, as that's what I saw recommended from Google.
```
widgets.add(Column(children: [Flexible(child: subdropdown)],));
```
This gave me this error:
```
I/flutter (22767): RenderFlex children have non-zero flex but incoming height constraints are unbounded.
I/flutter (22767): When a column is in a parent that does not provide a finite height constraint, for example if it is
I/flutter (22767): in a vertical scrollable, it will try to shrink-wrap its children along the vertical axis. Setting a
I/flutter (22767): flex on a child (e.g. using Expanded) indicates that the child is to expand to fill the remaining
I/flutter (22767): space in the vertical direction.
I/flutter (22767): These two directives are mutually exclusive. If a parent is to shrink-wrap its child, the child
I/flutter (22767): cannot simultaneously expand to fit its parent.
I/flutter (22767): Consider setting mainAxisSize to MainAxisSize.min and using FlexFit.loose fits for the flexible
I/flutter (22767): children (using Flexible rather than Expanded). This will allow the flexible children to size
I/flutter (22767): themselves to less than the infinite remaining space they would otherwise be forced to take, and
I/flutter (22767): then will cause the RenderFlex to shrink-wrap the children rather than expanding to fit the maximum
I/flutter (22767): constraints provided by the parent.
```
Then I tried following these instructions, and setting the `mainAxisSize` and the `FlexFit` just brought back the original error.
```
widgets.add(Column(mainAxisSize: MainAxisSize.min, children: [Flexible(child: subdropdown, fit: FlexFit.loose)],));
```
I looked at [this](https://stackoverflow.com/questions/47032262/flutter-dropdownbutton-overflow-in-listview) thread, but that one has the dropdown rendering , it's just rendering incorrectly. The errors I'm getting interrupts the rendering, so it doesn't show anything at all.
| DropdownButton in ListView/Column causing a rendering error | CC BY-SA 4.0 | null | 2019-01-12T02:14:13.437 | 2019-01-12T02:14:13.437 | null | null | 4,457,867 | [
"dart",
"flutter",
"mobile-development"
] |
54,274,836 | 1 | null | null | 0 | 237 | Here I am trying to expand view size with single finger `onTouchevent`. Almost it's working for long length strings but it's not working for small words like "Just" or "Know", complete view is getting shaking, sometimes the view dimensions increasing unexpectedly and the view getting rotating. It would be helpful if some one helps me to correct my code.
Here I am adding my expected output screen image
[](https://i.stack.imgur.com/kbm4i.jpg)
```
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<FrameLayout
android:id="@+id/frmBorder"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="8dp"
android:background="@drawable/rounded_border_tv">
<TextView
android:id="@+id/tvPhotoEditorText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="4dp"
android:textColor="#000000"
android:textSize="18sp"
tools:text="Burhanuddin"
tools:textColor="@android:color/black" />
</FrameLayout>
<ImageView
android:id="@+id/imgPhotoEditorClose"
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_gravity="top|start"
android:elevation="1dp"
android:src="@drawable/ic_remove" />
<ImageView
android:id="@+id/imgPhotoEditorRotate"
android:layout_width="15dp"
android:layout_height="15dp"
android:layout_gravity="bottom|end"
android:elevation="1dp"
android:src="@drawable/ic_remove" />
</FrameLayout>
```
```
final View textRootView = getLayout(ViewType.TEXT);
final ImageView imgRotate = textRootView.findViewById(R.id.imgPhotoEditorRotate);
SingleTouchListener singleTouchListener= new SingleTouchListener(
textRootView, parentView, this.imageView);
imgRotate.setOnTouchListener(singleTouchListener);
```
```
public boolean onTouch(View view, MotionEvent event) {
int action = event.getAction();
float x = event.getX();
float y = event.getY();
float mx = view.getX();
float my = view.getY();
switch (action)
{
case MotionEvent.ACTION_DOWN:
last_x=x;
last_y=y;
textRootView.bringToFront();
break;
case MotionEvent.ACTION_MOVE:
float dx = x - last_x;
float dy = y - last_y;
updateRotateAndScale(dx, dy,mx,my);
textRootView.setScaleX(mScale);
textRootView.setScaleY(mScale);
float rotation = adjustAngle(textRootView.getRotation() +
mRotateAngle);
textRootView.setRotation(rotation);
last_x = x;
last_y = y;
break;
case MotionEvent.ACTION_UP:
if (onSingleTouchListener!=null)
onSingleTouchListener.onRemoveViewListener(view);
resetView();
break;
}
return true;
}
public void updateRotateAndScale(final float dx, final float dy, float mx,
float my)
{
float Frame_c_x = textRootView.getPivotX()/2; // frame layout center
position, for to perform animation and scale.
float Frame_c_y = textRootView.getPivotY()/2;
float x = mx; // view last x , y position
float y = my;
float n_x = x + dx; // extended view
float n_y = y + dy;
float xa = x - Frame_c_x; // Off of the previous view
float ya = y - Frame_c_y;
float xb = n_x - Frame_c_x;
float yb = n_y - Frame_c_y;
float srcLen = (float) Math.sqrt(xa * xa + ya * ya);
float curLen = (float) Math.sqrt(xb * xb + yb * yb);
float scale = curLen / srcLen;
mScale *= scale;
float newWidth = textRootView.getWidth() * mScale;
if (newWidth < 70) {
mScale /= scale;
return;
}
double cos = (xa * xb + ya * yb) / (srcLen * curLen);
if (cos > 1 || cos < -1)
return;
float angle = (float) Math.toDegrees(Math.acos(cos));
float calMatrix = xa * yb - xb * ya;
int flag = calMatrix > 0 ? 1 : -1;
angle = flag * angle;
mRotateAngle += angle;
}
public void resetView() {
mRotateAngle = 0;
mScale = 1;
}
```
| Unable to resize and rotate view with setScaleX and setScaleY in onTouch event | CC BY-SA 4.0 | null | 2019-01-20T08:41:40.390 | 2019-01-20T10:33:34.427 | 2019-01-20T10:33:34.427 | 3,705,788 | 2,807,103 | [
"java",
"android",
"image",
"mobile-development"
] |
54,315,102 | 1 | 54,315,233 | null | -1 | 268 | I want to build a windows app and I would like to be able to send and receive communication to and from the windows desktop app and mobile devices. For instance I would like to be able to scan the wifi network, see my app (from the mobile device and I would build in security measures) and then be able to change a slide for instance, or change text on the screen... so a remote control for a presentation for example.
Would it be best to build a web service in the windows app and have the mobile app scan for that service and send POST and GET commands? Is there a framework that would help with this already out there?
I am using Visual Studio 2017 and C# and looking to NOT use Powerpoint
| Building a Windows App with iPhone/Android remote control | CC BY-SA 4.0 | 0 | 2019-01-22T19:23:39.257 | 2019-01-23T03:22:50.013 | 2019-01-23T03:22:50.013 | 1,472,835 | 1,472,835 | [
"c#",
"winforms",
"slideshow",
"mobile-development"
] |
54,382,554 | 1 | 54,385,951 | null | 1 | 1,658 | I'm building an e commerce app with React Native. I'm stuck with an issue. In the "Basket" Page, I want to show the total price of the items.
I have a state totalPrice set to 0 at the beginning and the when I display each item in a flatlist, i want to update totalPrice (totalPrice = totalPrice + item price * quantity)
My code:
```
class Basket extends Component {
constructor(props) {
super(props);
this.state = {
isLoading: true,
totalPrice: 0,
}
}
componentDidMount(){
return fetch(...)
.then((response) => response.json())
.then((responseJson) => {
this.setState({
isLoading: false,
dataSource: responseJson.records,
}, function(){
});
})
.catch((error) =>{
console.error(error);
});
}
render() {
if(this.state.isLoading){
return(
<View>
<ActivityIndicator/>
</View>
)
}
return (
<View style={{ flex: 1}}>
<ScrollView>
<FlatList
data={this.state.dataSource}
numColumns={1}
renderItem={({item}) => //displaying the items
//below i want to update totalPrice but it didn't work
this.setState({
totalPrice : this.state.totalPrice + item.quantity *
item.price,
});
}
/>
</ScrollView>
<View>
<Text> {this.state.totalPrice} </Text>
</View>
</View>
);
}
}
```
| React Native update state in FlatList | CC BY-SA 4.0 | null | 2019-01-26T20:43:30.307 | 2019-01-27T07:22:52.677 | null | null | 10,897,000 | [
"reactjs",
"react-native",
"reactive-programming",
"expo",
"mobile-development"
] |
54,430,720 | 1 | null | null | 0 | 26 | I am building an app which will contain a large number of photos (200+) and about 100 descriptions of text. I need to be able to fetch and retrieve the photos and text and display them in my app however my client wants the app to be able to run offline without having to connect to the internet. I'm assuming I will have to embed the images and text data into my app itself. But I'm still new to this and was wondering what are my approaches to this and what kind of Backend I will need. The Images are in a form of png, and the text can be given in any form (pdf, docx, csv, it doesn't matter as I can always convert it).
Sorry if I am not being to specific, I'm still new and trying to figure out how to implement the data into my app.
Thank you so much!
| How should I approach being able to retrieve images and description data in my React Native App offline? | CC BY-SA 4.0 | null | 2019-01-29T22:41:49.283 | 2019-01-29T23:01:37.633 | null | null | 10,830,268 | [
"android",
"react-native",
"mobile",
"mobile-development"
] |
54,432,336 | 1 | null | null | 1 | 941 | I need compare feature between "rn-fetch-blob" and "axios"
which one the best between "rn-fetch-blob" and "axios" for fetching data ?
| rn-fetch-blob Vs axios for fetching data API | CC BY-SA 4.0 | null | 2019-01-30T01:59:22.133 | 2019-01-30T01:59:22.133 | null | null | 10,866,069 | [
"javascript",
"react-native",
"hybrid-mobile-app",
"mobile-development"
] |
54,516,290 | 1 | null | null | 0 | 473 | Are apps made with cordova mobile development framework already 64-bit ready and compatible? Since we are developing in non-native code (Cordova), is the requirement related to us?
| Apps ready for the 64-bit requirement by August 1, 2019 | CC BY-SA 4.0 | null | 2019-02-04T12:37:26.003 | 2019-02-06T01:10:28.440 | 2019-02-04T12:52:01.917 | 11,012,427 | 11,012,427 | [
"cordova",
"32bit-64bit",
"mobile-development"
] |
54,602,487 | 1 | 54,602,542 | null | 0 | 56 | I used AppBarLayout & ToolBar to replace the default ActionBar. I have six activities which are supposed to use my custom ActionBar. But I don't want to paste the same code in onCreate() function for each activity.
How can I do the same settings just for once? I am new to Android, thanks for your help!
| How to set the same ToolBar in different activities if I don't want to paste the same code? | CC BY-SA 4.0 | null | 2019-02-09T02:04:56.680 | 2019-02-09T05:07:22.880 | null | null | 9,478,153 | [
"java",
"android",
"mobile-development"
] |
54,665,597 | 1 | 54,665,801 | null | 0 | 71 | I use function `drawCircle(int diameter)` to return `ShapeDrawable` object, which is an OvalShape. Then I use `ImageView.setImageDrawable()` to set the OvalShape. But the `ImageViews` are still empty. How to do it correctly?
Function `drawCircle()`:
```
public ShapeDrawable drawCircle (int diameter) {
OvalShape ovalShape = new OvalShape();
ShapeDrawable drawable = new ShapeDrawable(ovalShape);
drawable.getPaint().setColor(getResources().getColor(R.color.textColorHint));
drawable.getPaint().setStyle(Paint.Style.FILL_AND_STROKE);
drawable.getPaint().setStrokeWidth((float)2);
drawable.setBounds(0 ,0, diameter, diameter);
return drawable;
}
```
Set `ImageView`:
```
one_img.setImageDrawable(drawCircle(selector_one_diameter));
two_img.setImageDrawable(drawCircle(selector_two_diameter));
```
Above all, I tried using `.xml` file to describe oval shapes. But since values in `dimens.xml` cannot be re-written in Java code, I can't dynamically change the size of oval shapes. It couldn't be better if you can suggest another way!
| How to dynamically set drawable resource to ImageView? | CC BY-SA 4.0 | null | 2019-02-13T08:29:00.563 | 2019-02-13T08:42:01.027 | 2019-02-13T08:37:35.017 | 9,844,646 | 9,478,153 | [
"android",
"mobile-development"
] |
54,760,904 | 1 | null | null | 1 | 109 | I am practicing with working with DynamoDB and other serverless tools offered by AWS. I am used to working with relational databases like MySQL so with with Dynamo has been a little bit of a challenge for me.
Basically I was looking at doing something similar to what already exists with Facebook, Instagram, Youtube, and other popular sites are doing. And that's creating a platform that allows for Users to sign up, follow others, and post media (videos and pictures) that can be liked, and commented on. For items that could be growing, like Followers, or Likes, I originally stored as Lists in their respective tables; however, I realize that may not be the best approach as DynamoDB does have a data limit. For example, if someone like Kobe Bryant joined the app, and immediately got millions of followers, the list approach may not be best.
Like this,
Media:
- MediaID
- UserID
- MediaType
- Size
- S3_URL
- Likes: {
...
...
}
- Comments: {
...
...
}
Would it be better to store things like this in separate tables? Or am I now thinking back to relational databases?
For example,
Media:
- MediaID
- UserID
- MediaType
- Size
- S3_URL
Media_Likes:
- LikeID
- MediaID
- UserID
- DateLiked
Media_Comments:
- CommentID
- MediaID
- UserID
- Text
- DateCommented
Or what else would be the best way to design something like this?
| DynamoDB Schema Advice | CC BY-SA 4.0 | null | 2019-02-19T07:34:07.357 | 2019-02-19T07:34:07.357 | null | null | 8,448,916 | [
"amazon-web-services",
"api",
"amazon-dynamodb",
"serverless",
"mobile-development"
] |
54,810,329 | 1 | null | null | 6 | 2,668 | I'm trying to test our web app on iPhone. During the lifecycle our app is doing a call to a third-party api which allows calls only with a header 'origin: localhost'
On desktop it's not a problem. On Android I can set up [port forwarding](https://developers.google.com/web/tools/chrome-devtools/remote-debugging/?utm_source=dcc&utm_medium=redirect&utm_campaign=2016q3#port-forwarding).
Can I do anything similar on iPhone? Is it possible?
I found [this answer](https://stackoverflow.com/questions/12657651/connect-device-to-mac-localhost-server). but it describes a way to use url like `[your pc name].local` which isn't what I need
| iPhone testing: port forwarding and localhost | CC BY-SA 4.0 | null | 2019-02-21T15:12:29.177 | 2020-04-22T10:42:14.003 | null | null | 1,907,902 | [
"ios",
"iphone",
"mobile-safari",
"mobile-development"
] |
54,838,472 | 1 | null | null | 0 | 55 | Can someone point me in the right direction on how I could go about writing a piece of code for react native that takes an input from the user (username and password) and then logins into a website with in.
Also any react native web scraping libraries anyone could recommend (I was thinking about using Cheerio)
Thanks in Advance :)
| React Native Logging in to Web Page | CC BY-SA 4.0 | null | 2019-02-23T05:17:28.473 | 2021-02-10T17:34:37.257 | 2021-02-10T17:34:37.257 | 2,318,649 | 11,104,665 | [
"react-native",
"mobile-development"
] |
54,843,077 | 1 | null | null | 0 | 947 | I know you can use dpm to set an app as a device owner via a runtime exec command, but my big question is can you also use the dpm to remove an app as device owner? Such as with a password run the code to remove the app from device ownership?
I am new to android development and I am learning as much as possible. The company I work for owns the devices and wants to keep employees from removing the app. For security reasons, rooting is not feasible. However at the same time they would like to be able to remove the app at a future date if necessary.
At least point me in the right direction for further research.
| Using DPM to set Device owner | CC BY-SA 4.0 | null | 2019-02-23T15:22:29.723 | 2019-03-04T10:24:43.223 | null | null | 7,238,878 | [
"java",
"android",
"mobile-development",
"device-admin",
"dpm"
] |
54,952,298 | 1 | null | null | 0 | 52 | This is my first post on here so I might not have the lingo down, go easy on me!
I've been doing a lot of personal research into website accessibility over the past few months and I've gotten a pretty good grasp of by now. There are lots of resources in that department. I can't seem to find any good resources on accessibility in the context of mobile app development be it Android, iOS, or windows.
Tl;Dr: anyone know good resources to learn accessibility in Mobile app development?
| Learning mobile accessibility | CC BY-SA 4.0 | 0 | 2019-03-01T21:06:47.783 | 2019-03-02T00:34:17.040 | null | null | 1,828,967 | [
"accessibility",
"mobile-development"
] |
55,011,082 | 1 | null | null | 2 | 210 | We have few different enterprise mobile applications being built with NativeScript. Are there any NativeScript plugins that can be used to share data among those apps.
For example:
1) App1 might store some JSON
2) App2, App3 would be able to retrieve the stored JSON upon their open.
Thank you,
Kumar.
| Ways to share data among NativeScript mobile applications | CC BY-SA 4.0 | 0 | 2019-03-05T20:31:17.697 | 2019-03-05T21:13:19.240 | null | null | 8,756,451 | [
"nativescript",
"hybrid-mobile-app",
"nativescript-angular",
"mobile-development",
"nativescript-plugin"
] |
55,033,471 | 1 | 55,033,752 | null | 0 | 103 | I've never made an app before and am looking to get into it. I also need to upgrade my phone because it's really old. I've heard people say that it is best to test your app on stock android. But I really wanted to buy a Huawei, which might be running an older version of android not stock. What extra benefit would I get by spending the extra $500 to buy a Google Pixel phone for testing. Or is it fine, if I go ahead and test my app on a Huawei? What would be the pros and cons?
| What are the benefits of testing your app on stock android? | CC BY-SA 4.0 | null | 2019-03-06T22:52:01.013 | 2019-03-06T23:21:46.857 | null | null | 8,156,599 | [
"android",
"mobile-development"
] |
55,055,742 | 1 | null | null | 1 | 3,183 | I'm trying to make an animation of sorting algorithms in flutter. So far I've coded the algorithm and managed to get some sort of animation by iterating once at a time instead of the whole sorting process but you have to keep tapping the button to sort, one item at a time. I've been trying to look for a way to animate this process. Here's my code:
```
import 'package:flutter/material.dart';
import 'dart:math';
List<double> rectHeights = new List<double>();
int n = 2;
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Sorting',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key}) : super(key: key);
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> with SingleTickerProviderStateMixin {
int _selectedIndex = 0;
final _widgetOptions = [
Text('Index 0: Sort'),
Text('Index 1: Shuffle'),
];
@override
void initState() {
super.initState();
Random random = new Random();
for (int i = 0; i < 35; i++) {
double ranNum = random.nextDouble() * 600;
rectHeights.add(ranNum);
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: Padding(
padding: EdgeInsets.all(8.0),
child: Center(
child: Row(
children: rectangles(),
),
),
),
bottomNavigationBar: BottomNavigationBar(
iconSize: 50.0,
items: <BottomNavigationBarItem>[
BottomNavigationBarItem(icon: Icon(Icons.sort), title: Text('Sort', style: TextStyle(fontSize: 20.0),)),
BottomNavigationBarItem(icon: Icon(Icons.shuffle), title: Text('Shuffle', style: TextStyle(fontSize: 20.0),)),
],
currentIndex: _selectedIndex,
fixedColor: Colors.blue,
onTap: _onItemTapped,
),
);
}
void _onItemTapped(int index) {
setState(() {
_selectedIndex = index;
});
switch(_selectedIndex) {
case 0:
setState(() {
insertSortOnce(rectHeights, 1);
});
break;
case 1:
setState(() {
shuffle(rectHeights);
n = 2;
});
}
}
}
List<Widget> rectangles() {
List<Widget> rects = new List<Widget>();
for (double height in rectHeights) {
var rect = Padding(
padding: EdgeInsets.symmetric(horizontal: 1.0),
child: Container(
width: 8.0,
height: height,
decoration: BoxDecoration(
shape: BoxShape.rectangle,
color: Colors.blue
),
),
);
rects.add(rect);
}
return rects;
}
void insertSort(values, choice) {
int i, j;
double key, temp;
for (i = 1; i < values.length; i++) {
key = values[i];
j = i - 1;
switch (choice) {
case 1:
while (j >= 0 && key < values[j]) {
temp = values[j];
values[j] = values[j + 1];
values[j + 1] = temp;
j--;
}
break;
case 2:
while (j >= 0 && key > values[j]) {
temp = values[j];
values[j] = values[j + 1];
values[j + 1] = temp;
j--;
}
break;
}
}
}
void insertSortOnce(values, choice) {
int i, j;
double key, temp;
for (i = 1; i < n; i++) {
key = values[i];
j = i - 1;
switch (choice) {
case 1:
while (j >= 0 && key < values[j]) {
temp = values[j];
values[j] = values[j + 1];
values[j + 1] = temp;
j--;
}
break;
case 2:
while (j >= 0 && key > values[j]) {
temp = values[j];
values[j] = values[j + 1];
values[j + 1] = temp;
j--;
}
break;
}
}
n++;
}
List shuffle(List items) {
var random = new Random();
// Go through all elements.
for (var i = items.length - 1; i > 0; i--) {
// Pick a pseudorandom number according to the list length
var n = random.nextInt(i + 1);
var temp = items[i];
items[i] = items[n];
items[n] = temp;
}
return items;
}
```
| Animating a Loop in Flutter | CC BY-SA 4.0 | 0 | 2019-03-08T02:09:02.920 | 2019-03-09T05:49:19.820 | null | null | 11,168,512 | [
"animation",
"dart",
"flutter",
"mobile-development",
"flutter-animation"
] |
55,087,033 | 1 | null | null | -2 | 302 | I'd like to create a Layout like this.
[](https://i.stack.imgur.com/FqjPZ.png)
What is the best way to perform this?
| Tips to create a layout | CC BY-SA 4.0 | null | 2019-03-10T11:06:56.060 | 2019-03-10T14:02:49.380 | 2019-03-10T14:02:49.380 | 2,649,012 | 9,181,998 | [
"android",
"android-layout",
"mobile-development"
] |
55,093,883 | 1 | 55,094,256 | null | 0 | 210 | So, My Friend who is in University wanted me to check out his Application,
He sent me the Project File and When I tried to Run it I was greeted with an Error Message that Detailed.
```
Could not Find com.android.tools.build:aapt2:3.3.2-5309881.
```
Any Help would be Highly Appreciated (:
Required by:
project: app
[](https://i.stack.imgur.com/oJUur.png)
| Android Studio Error : Could not find Android Buld Tools | CC BY-SA 4.0 | null | 2019-03-11T00:46:48.683 | 2019-03-11T01:50:48.890 | 2019-03-11T01:01:20.333 | 3,145,960 | 10,693,743 | [
"java",
"android",
"dependencies",
"mobile-development"
] |
55,119,393 | 1 | 57,714,519 | null | 10 | 9,007 | I need to know if there is any way or plugin to run dart code on Xcode for flutter app development. If there is any mention here, every time I searched on internet it only shows me flutter commands for terminal to run app on iOS. I want my IDE to be XCODE for flutter development. here is what flutter official documentations says when I ask same question
[Flutter Documentation about MacOS](https://flutter.dev/docs/get-started/install/macos)
Thanks in advance.
| How to install flutter and dart in Xcode macosx? | CC BY-SA 4.0 | 0 | 2019-03-12T10:35:31.250 | 2019-09-07T07:12:54.890 | 2019-03-12T10:37:31.873 | 217,408 | 9,250,384 | [
"xcode",
"flutter",
"ide",
"mobile-development"
] |
55,153,552 | 1 | null | null | 0 | 2,156 | I'm trying to clone the timer of the app I use when I workout: Strong. So far, I've managed to implement all the main features and animations (which aren't many). I know my code is messy and there's probably better ways to implement what I'm trying to do if there are any suggestions on that they're also appreciated. I'm having two problems with my application. 1. When the timer starts I get the following error:
```
flutter: ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY
╞═══════════════════════════════════════════════════════════
flutter: The following NoSuchMethodError was thrown building Peinture(dirty, state: _PeintureState#82e34):
flutter: The getter 'inMilliseconds' was called on null.
flutter: Receiver: null
flutter: Tried calling: inMilliseconds
flutter:
flutter: When the exception was thrown, this was the stack:
flutter: #0 Object.noSuchMethod (dart:core/runtime/libobject_patch.dart:50:5)
flutter: #1 _PeintureState.build (package:workout_timer/main.dart:241:72)
flutter: #2 StatefulElement.build (package:flutter/src/widgets/framework.dart:3809:27)
flutter: #3 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3721:15)
flutter: #4 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
flutter: #5 StatefulElement.update (package:flutter/src/widgets/framework.dart:3878:5)
flutter: #6 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #7 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4867:14)
flutter: #8 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #9 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
flutter: #10 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
flutter: #11 ProxyElement.update (package:flutter/src/widgets/framework.dart:3990:5)
flutter: #12 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #13 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
flutter: #14 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
flutter: #15 StatelessElement.update (package:flutter/src/widgets/framework.dart:3781:5)
flutter: #16 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #17 RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:4585:32)
flutter: #18 MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4975:17)
flutter: #19 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #20 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
flutter: #21 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
flutter: #22 ProxyElement.update (package:flutter/src/widgets/framework.dart:3990:5)
flutter: #23 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #24 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
flutter: #25 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
flutter: #26 ProxyElement.update (package:flutter/src/widgets/framework.dart:3990:5)
flutter: #27 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #28 RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:4585:32)
flutter: #29 MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4975:17)
flutter: #30 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #31 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
flutter: #32 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
flutter: #33 StatefulElement.update (package:flutter/src/widgets/framework.dart:3878:5)
flutter: #34 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #35 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
flutter: #36 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
flutter: #37 ProxyElement.update (package:flutter/src/widgets/framework.dart:3990:5)
flutter: #38 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #39 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
flutter: #40 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
flutter: #41 StatefulElement.update (package:flutter/src/widgets/framework.dart:3878:5)
flutter: #42 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #43 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4867:14)
flutter: #44 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #45 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
flutter: #46 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
flutter: #47 StatelessElement.update (package:flutter/src/widgets/framework.dart:3781:5)
flutter: #48 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #49 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4867:14)
flutter: #50 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #51 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
flutter: #52 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
flutter: #53 StatefulElement.update (package:flutter/src/widgets/framework.dart:3878:5)
flutter: #54 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #55 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
flutter: #56 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
flutter: #57 StatefulElement.update (package:flutter/src/widgets/framework.dart:3878:5)
flutter: #58 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #59 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
flutter: #60 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
flutter: #61 ProxyElement.update (package:flutter/src/widgets/framework.dart:3990:5)
flutter: #62 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #63 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
flutter: #64 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
flutter: #65 ProxyElement.update (package:flutter/src/widgets/framework.dart:3990:5)
flutter: #66 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #67 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
flutter: #68 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
flutter: #69 StatefulElement.update (package:flutter/src/widgets/framework.dart:3878:5)
flutter: #70 Element.updateChild (package:flutter/src/widgets/framework.dart:2742:15)
flutter: #71 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
flutter: #72 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
flutter: #73 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2286:33)
flutter: #74 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding&WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:676:20)
flutter: #75 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:219:5)
flutter: #76 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:990:15)
flutter: #77 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:930:9)
flutter: #78 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:842:5)
flutter: #79 _invoke (dart:ui/hooks.dart:154:13)
flutter: #80 _drawFrame (dart:ui/hooks.dart:143:3)
flutter: ════════════════════════════════════════════════════════════════════════════════════════════════════
```
Which I've made sure to check I'm not getting anything null but I still get it.
And the second.
When the timer finishes I get the following error:
```
[VERBOSE-2:shell.cc(184)] Dart Error: Unhandled exception:
setState() called after dispose(): _TimeState#10749(lifecycle state: defunct, not mounted)
This error happens if you call setState() on a State object for a widget that no longer appears in the widget tree (e.g., whose parent widget no longer includes the widget in its build). This error can occur when code calls setState() from a timer or an animation callback. The preferred solution is to cancel the timer or stop listening to the animation in the dispose() callback. Another solution is to check the "mounted" property of this object before calling setState() to ensure the object is still in the tree.
This error might indicate a memory leak if setState() is being called because another object is retaining a reference to this State object after it has been removed from the tree. To avoid memory leaks, consider breaking the reference to this object during dispose().
#0 State.setState.<anonymous closure> (package:flutter/src/widgets/framewo<…>
```
And when I try to start a timer again I get this:
```
flutter: Another exception was thrown: NoSuchMethodError: The getter 'inMilliseconds' was called on null.
```
Here's is my code:
```
import 'dart:async';
import 'dart:math';
import 'package:flutter/material.dart';
import 'package:fluttery/layout.dart';
Duration time;
Duration previousTime;
Duration currentTime;
AnimationController timeController, circleController;
bool reverse = false;
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> with TickerProviderStateMixin {
Stopwatch stopwatch = new Stopwatch();
@override
void initState() {
super.initState();
timeController = new AnimationController(
duration: const Duration(milliseconds: 250),
vsync: this,
);
timeController.addListener(() {
setState(() {});
});
}
@override
void dispose() {
timeController.dispose();
circleController.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: Stack(
children: <Widget>[
Center(
child: Opacity(
opacity: timeController.value != null ? 1.0 - timeController.value : 1.0,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
new FlatButton(
onPressed: () {
setState(() {
previousTime = Duration(minutes: 1);
time = previousTime;
timeController.forward();
stopwatch.start();
circleController = new AnimationController(
duration: Duration(milliseconds: time.inMilliseconds),
vsync: this,
);
circleController.addListener(() {
setState(() {});
});
circleController.forward();
});
},
child: Text("1:00",
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 16.0)),
),
new FlatButton(
onPressed: () {
setState(() {
previousTime = Duration(minutes: 2);
time = previousTime;
timeController.forward();
stopwatch.start();
circleController = new AnimationController(
duration: Duration(milliseconds: time.inMilliseconds),
vsync: this,
);
circleController.addListener(() {
setState(() {});
});
circleController.forward();
});
},
child: Text("2:00",
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 16.0)),
),
new FlatButton(
onPressed: () {
setState(() {
previousTime = Duration(minutes: 3);
time = previousTime;
timeController.forward();
stopwatch.start();
circleController = new AnimationController(
duration: Duration(milliseconds: time.inMilliseconds),
vsync: this,
);
circleController.addListener(() {
setState(() {});
});
circleController.forward();
});
},
child: Text("3:00",
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 16.0)),
),
new FlatButton(
onPressed: () {
setState(() {
previousTime = Duration(minutes: 5);
time = previousTime;
timeController.forward();
stopwatch.start();
circleController = new AnimationController(
duration: Duration(milliseconds: time.inMilliseconds),
vsync: this,
);
circleController.addListener(() {
setState(() {});
});
circleController.forward();
});
},
child: Text("5:00",
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 16.0)),
),
],
),
),
),
Center(
child: Opacity(
opacity: timeController.value != null ? 0.0 + timeController.value : 0.0,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: time != null ? buildTimes(stopwatch, time, previousTime) : []
),
),
),
CenterAbout(
position: Offset(MediaQuery.of(context).size.width / 2,
MediaQuery.of(context).size.height / 2),
child: Peinture(color: Color.fromRGBO(224, 245, 255, 1.0), animate: false)
),
CenterAbout(
position: Offset(MediaQuery.of(context).size.width / 2,
MediaQuery.of(context).size.height / 2),
child: Peinture(color: Colors.blue, animate: true)
)
],
),
);
}
}
List<Widget> buildTimes(stopwatch, time, previousTime) {
return [
Time(stopwatch: stopwatch, time: time),
Text(
previousTime != null
? previousTime.toString().substring(3, 7)
: "",
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 30.0,
color: Colors.black54),
),
];
}
class Peinture extends StatefulWidget {
final Color color;
final bool animate;
Peinture({this.color, this.animate});
@override
_PeintureState createState() => _PeintureState(color: color, animate: animate);
}
class _PeintureState extends State<Peinture> {
Timer timer;
Color color;
bool animate;
_PeintureState({this.color, this.animate}) {
timer = Timer.periodic(Duration(milliseconds: 1), callback);
}
void callback(Timer timer) {
setState(() {
if (currentTime != null) {
print(currentTime.inMilliseconds);
if (currentTime.inMilliseconds <= 0) {
reverse = true;
timeController.reverse();
previousTime = null;
time = previousTime;
currentTime = time;
reverse = false;
}
}
});
}
@override
Widget build(BuildContext context) {
return Opacity(
opacity: reverse == false ? 1.0 : timeController.value,
child: CustomPaint(
painter: CirclePainter(
radius: 150.0,
thickness: 8.0,
color: color,
startAngle: -pi / 2,
endAngle: time != null && animate ? -pi / 2 + (((currentTime.inMilliseconds - circleController.value)) / 60000) * (2*pi) : -pi / 2 + (2 * pi) - (0 / (2*pi)),
),
),
);
}
}
class CirclePainter extends CustomPainter {
final double radius;
final double thickness;
final Color color;
final double startAngle;
final double endAngle;
final Paint circlePaint;
CirclePainter({this.radius, this.thickness, this.color, this.startAngle, this.endAngle})
: circlePaint = new Paint()
..color = color
..strokeWidth = thickness
..style = PaintingStyle.stroke
..strokeCap = StrokeCap.round;
@override
void paint(Canvas canvas, Size size) {
canvas.drawArc(Rect.fromLTWH(-radius, -radius, radius * 2, radius * 2),
startAngle, endAngle - startAngle, false, circlePaint);
}
@override
bool shouldRepaint(CustomPainter oldDelegate) {
return true;
}
}
class Time extends StatefulWidget {
final Duration time;
final Stopwatch stopwatch;
Time({this.stopwatch, this.time});
@override
_TimeState createState() => _TimeState(stopwatch: stopwatch, time: time);
}
class _TimeState extends State<Time> {
Timer timer;
Duration time;
Stopwatch stopwatch;
_TimeState({this.time, this.stopwatch}) {
timer = new Timer.periodic(new Duration(milliseconds: 1), callback);
}
void callback(Timer timer) {
if (stopwatch.isRunning) {
setState(() {
currentTime = time - stopwatch.elapsed;
});
}
}
@override
Widget build(BuildContext context) {
return Text(
currentTime != null ? currentTime.toString().substring(3, 7) : "",
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 60.0, color: Colors.black87),
);
}
}
```
Thanks for the help and again any suggestions as to how you'd go about it would be appreciated.
| Repeating Animation and Adjustments in Flutter | CC BY-SA 4.0 | null | 2019-03-14T01:21:42.520 | 2019-03-14T04:52:20.463 | null | null | 11,168,512 | [
"animation",
"dart",
"flutter",
"mobile-development",
"flutter-animation"
] |
55,847,266 | 1 | 55,847,509 | null | 0 | 1,652 | I'm trying to build a react-native component using styled components. Here is the snippet
```
import { View } from 'react-native'
import styled from 'styled-components'
const StyledPromocode = styled(View)`
border-bottom-width: 1,
borderColor: #CCCCCC,
borderStyle: solid
`
```
But if I use this component in my render method I always get an error
> Invariant Violation: Invalid prop `borderBottomWidth` of type `string`
supplied to `StyleSheet generated`, expected `number`.
StyleSheet generated: {
"borderBottomWidth": "1,",
"borderColor": "#CCCCCC,",
"borderStyle": "solid"
}
As you can see from the code above, border-bottom-width equals 1, which is a number value.
Do styled-components convert all values to a string under the hood?
I know that I can use StyleSheet.create to get what I need, but I also would like to know if there is any way to define properties like border-bottom-width, height, width and etc via styled-components.
If not, then does it mean that it doesn't make sense to use styled-components in react-native, because, obviously, errors like this would appear all the time?
| Define numeric style properties (border-bottom-width, height, width and etc.) in react-native via styled components | CC BY-SA 4.0 | null | 2019-04-25T10:33:17.433 | 2021-07-24T17:15:28.520 | 2019-04-25T10:40:33.863 | 2,440,268 | 2,440,268 | [
"javascript",
"react-native",
"frontend",
"styled-components",
"mobile-development"
] |
56,034,095 | 1 | null | null | 1 | 3,672 | Is there any way to change default navigation animation in react native. in IOS its swipe right to left. android bottom to top. can we make this constance for both platforms?
Many thanks
| How to change default navigation animation in react native | CC BY-SA 4.0 | null | 2019-05-08T05:30:22.753 | 2019-05-08T07:28:40.810 | null | null | 8,591,045 | [
"javascript",
"react-native",
"hybrid-mobile-app",
"mobile-development"
] |
56,039,718 | 1 | null | null | 1 | 1,123 | One of the biggest school has its own Android tablets which distributed among several branches and it's already with the students a long time ago.
We need to develop an app and put it in the play store normally and all the students have to download the app but this time we need the app to run as a system app and take the full control of the devices ( without rooting the device )
we need to prevent some malware apps from installing, access the wifi, mic, and camera, etc
so we make sure the students use the tablets in studying and exams only.
We search a lot and found that most of the answers are for android 5 and earlier. but there are many apps in the play store doing so.
So how to develop the app to run as a system app without rooting the device and without installing a custom ROM?
| How to convert an app to be a system app in android +5.0 without rooting the device? | CC BY-SA 4.0 | null | 2019-05-08T11:26:37.997 | 2019-05-08T12:47:51.633 | 2019-05-08T12:24:57.963 | 11,469,510 | 11,469,510 | [
"android",
"mobile-development"
] |
56,144,019 | 1 | null | null | 0 | 228 | I have to make an app which retrieve call from sim to the application which is installed on other user.
for e.g
User A calling from his Sim and User B received that call without containing any sim card on his phone.
Is that possible???
| Is there a way to call from sim to app in android | CC BY-SA 4.0 | null | 2019-05-15T07:42:33.420 | 2019-05-15T08:47:49.920 | 2019-05-15T07:58:49.660 | 7,034,513 | 10,025,278 | [
"java",
"android",
"mobile-development"
] |
56,316,332 | 1 | 56,316,958 | null | 0 | 39 | Below is the screenshot with incorrect layout:
As you can see above, a column inside a row is pushing other children down.
I have removed the column from the row and the layout was displaying as expected. However, I need that column to be part of the row.
```
class TitleSection extends StatelessWidget{
@override
Widget build(BuildContext context) {
// TODO: implement build
return Container(
padding: EdgeInsets.all(32),
child: Row(
children: <Widget>[
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text("Kratos",style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 20
)),
Text("The God Of War",
style: TextStyle(
color: Colors.grey[500]
),
),
],
),
),
Icon(
Icons.star,
color: Colors.red,
),
Text("143")
],
)
);
}
```
}
| Can anyone help me out in aligning the layout in flutter? | CC BY-SA 4.0 | null | 2019-05-26T18:34:22.017 | 2019-05-26T22:59:11.090 | 2019-05-26T22:59:11.090 | 1,722,709 | 10,884,560 | [
"flutter",
"flutter-layout",
"mobile-development"
] |
56,391,137 | 1 | 56,391,583 | null | 2 | 6,108 | I have installed expo with this command - `npm install expo-cli -g`
but when I am writing expo in command line, is writing that expo in not found.
I have tried to install with yarn and it was installed successful but is writing that expo in not found.
I have tried to export `PATH` to `~/.profile` but this did not help me.
What do I need to do to make my expo project?
| Expo command is not found ubuntu | CC BY-SA 4.0 | null | 2019-05-31T08:07:37.927 | 2021-07-21T15:22:14.860 | 2021-07-21T15:22:14.860 | 10,607,772 | 10,529,782 | [
"react-native",
"expo",
"mobile-development"
] |
56,607,537 | 1 | null | null | 0 | 230 | I am making an e-commerce app using flutter for frontend, and have decided to choose node js for making API, my doubt is should I use AWS Rds (environment to run MySQL database), or should I use MongoDB atlas?
I am not able to understand which is better, as both MongoDB cloud and AWS Rds are also paid I am unable to decide which one to choose. According, to what I searched and found, MongoDB is cheaper than AWS Rds, but MongoDB requires more maintenance. How much maintenance is actually required and which is better? Please help !!
Also, what are the other options for backend storage if I don't use the cloud??
| aws mysql database(Amazon RDS) or mongodb? | CC BY-SA 4.0 | null | 2019-06-15T05:10:45.247 | 2019-06-15T15:57:52.880 | 2019-06-15T15:57:52.880 | 10,574,137 | 5,603,700 | [
"mysql",
"amazon-rds",
"mobile-development",
"mongodb-atlas"
] |
56,643,722 | 1 | null | null | 0 | 394 | I am new for react native development. I need to create custom header for both IOS/Android platforms using react native. Because this header bottom edge have rounded corners. please refer the given image. [](https://i.stack.imgur.com/SeqWS.jpg)
| Create react native custom header style? | CC BY-SA 4.0 | null | 2019-06-18T07:21:20.680 | 2019-06-18T09:03:24.043 | null | null | 1,576,358 | [
"android",
"ios",
"reactjs",
"react-native",
"mobile-development"
] |
56,727,980 | 1 | null | null | 2 | 607 | I am trying to do something similar to what Instagram has for their select video screen. Where a grid of local videos that can be uploaded and it'll kind of 'preview' the one that is currently selected above the grid itself.
I'm using the react-native-community/cameraroll and this is the code I'm trying to get the Videos with.
```
CameraRoll.getPhotos({first: 20, assetType: "All"})
.then(r => this.setState({ videos: r.edges }))
.catch((err) => {
console.log('getVideosErr:' + err)
})
```
and I am trying to display the grid with some sample code I found and tried playing around with:
```
<ScrollView>
{this.state.videos.map((p, i) => {
return (
<Video
key={i}
style={{
width: 300,
height: 100,
}}
source={{ uri: p.node.video.uri }}
/>
;
})}
```
I have one video on the simulator but I am getting an error saying "TypeError: Cannot read property 'uri' of undefined" everytime I try grabbing the video.
Not so sure what the issue is right now, I followed the samples on the documentation for the cameraroll but haven't had any luck yet. Any advice/examples would be appreciated.
| How to get list of local videos and display them in grid format in React Native? | CC BY-SA 4.0 | null | 2019-06-23T21:48:37.127 | 2019-06-24T04:42:55.690 | null | null | 8,448,916 | [
"android",
"ios",
"react-native",
"mobile-development",
"camera-roll"
] |
56,760,069 | 1 | null | null | 1 | 981 | So I have a bottom navigation bar with three tabs: HomeView, UploadVideo and Messages. Basically, what I would like to do is when the user clicks on the UploadVideo tab, it will behave kind of the way Instagram does it. Where it will open up the image library, and allow the to select a media item and moves them to a screen where they can enter in their details. And if the user goes through the upload process entirely or cancels it will take them back to the page they were originally on before clicking the Upload tab/button.
Currently, what I have is when the User clicks Upload Video it will open up a screen with the tab bar hidden with an icon to open the Image library and a form to enter in the video data. If the user clicks cancel it will take them back to the HomeView (programmed this way) regardless of where they were when they click on the UploadVideo tab. So basically I guess to summarize my question, how can I get a tab to act more as a button?
| How to treat a bottom bar tab as a button in React Native? | CC BY-SA 4.0 | null | 2019-06-25T18:29:38.397 | 2019-06-26T07:07:18.597 | null | null | 8,448,916 | [
"javascript",
"react-native",
"react-native-navigation",
"mobile-development"
] |
57,259,208 | 1 | null | null | 2 | 99 | I have two screens, one list (Flatlist) and one filter screen where I want to be able to set some filters for the list. the list screen has the states "data" and "usedFilters". When I am switching to the filters screen, the states are set as navigation parameters for react navigation and then passed via navigation.navigate, together with the onChange function, as props to the filter screen. There they are read, and the filters screen class' state is set (usually with passed filters from the list screen, if no valid filters has been passed, some are initialized).
After that the filters can be changed. If that happens, the state of the filter screen gets updated.
If then the apply button is clicked the filter screens' state is passed to the onChange function and via that back to the list screen, the onChange function updates the state "usedFilters" state of the list screen. If the cancel button is pressed null is passed to the onChange function and there is no setState call.
Setting new states for the list screen works perfectly fine. the problem is, that when i press the cancel button (or the back button automatically rendered by react navigation) the changes are kept nevertheless. That only happens if the state has been changed before. So if there has never been applied a change and hence the "usedFitlers" state of the list screen is null, this behavior does not occur. Only if I already made some changes and hence the "usedFitlers" state of the list screen has a valid value which is passed to the filters screen the cancel or go back buttons won't work as expected.
I am using expo-cli 3 and tried on my android smartphone as well as the iOS simulator. Same behavior. I looked into it with chrome dev tools as well but i simply couldn't figure out where the "usedFitlers" state was updated.
I am using react native 0.60 and react navigation 3.11.0
My best guess is that for some reason the two states share the same memory or one is pointer to the other or sth like that. (Had problems like that with python some time ago, not knowing the it uses pointers when assigning variables).
Anyone got an idea?
List Screen:
```
export default class ListScreen extends React.Component {
state = { data: [], usedFilters: null };
static navigationOptions = ({ navigation }) => {
let data = navigation.getParam('data')
let changefilter = navigation.getParam('changeFilter')
let currfilter = navigation.getParam('currFilter')
return {
headerTitle:
<Text style={Styles.headerTitle}>{strings('List')}</Text>,
headerRight: (
<TouchableOpacity
onPress={() => navigation.navigate('FilterScreen', {
dataset: data, onChange: changefilter, activeFilters:
currfilter })} >
<View paddingRight={16}>
<Icon name="settings" size={24} color=
{Colors.headerTintColor} />
</View>
</TouchableOpacity>
),
};
};
_onChangeFilter = (newFilter) => {
if (newFilter) {
this.setState({ usedFilters: newFilter })
this.props.navigation.setParams({ currFilter: newFilter });
} // added for debugging reasons
else {
this.forceUpdate();
let a = this.state.usedFilters;
}
}
_fetchData() {
this.setState({ data: fakedata.results },
() => this.props.navigation.setParams({ data: fakedata.results,
changeFilter: this._onChangeFilter }));
}
componentDidMount() {
this._fetchData();
}
render() {
return (
<ScrollView>
<FlatList/>
// Just data rendering, no problems here
</ScrollView>
);
}
}
```
Filter Screen:
```
export default class FilterScreen extends React.Component {
static navigationOptions = () => {
return {
headerTitle: <Text style={Styles.headerTitle}> {strings('filter')}
</Text>
};
};
state = { currentFilters: null }
_onChange = (filter, idx) => {
let tmp = this.state.currentFilters;
tmp[idx] = filter;
this.setState({ currentFilters: tmp })
}
_initFilterElems() {
const filters = this.props.navigation.getParam('activeFilters');
const dataset = this.props.navigation.getParam('dataset');
let filterA = [];
let filterB = [];
let filterC = [];
if (filters) {
// so some checks
} else {
// init filters
}
const filterElements = [filterA, filterB, filterC];
this.setState({ currentFilters: filterElements })
}
componentDidMount() {
this._initFilterElems()
}
render() {
const onChange = this.props.navigation.getParam('onChange');
return (
<ScrollView style={Styles.screenView}>
<FlatList
data={this.state.currentFilters} // Listeneinträge
keyExtractor={(item, index) => 'key' + index}
renderItem={({ item, index }) => (
<FilterCategory filter={item} name={filterNames[index]}
idx={index} onChange={this._onChange} />
)}
ItemSeparatorComponent={() => <View style=
{Styles.listSeperator} />}
/>
<View style={Layout.twoHorizontalButtons}>
<TouchableOpacity onPress={() => {
onChange(this.state.currentFilters);
this.setState({ currentFilters: null });
this.props.navigation.goBack();
}}>
<View style={Styles.smallButton}>
<Text style={Styles.buttonText}>{strings('apply')} </Text>
</View>
</TouchableOpacity>
<TouchableOpacity onPress={() => {
onChange(null);
this.setState({ currentFilters: null });
this.props.navigation.goBack();
}}>
<View style={Styles.smallButton}>
<Text style={Styles.buttonText}>{strings('cancel')}
</Text>
</View>
</TouchableOpacity>
</View>
</ScrollView >
);
}
}
```
So when I press the cancel button, null is returned to the _onChangeFilter function of the list screen. This part works, and according to console.log and the debugger, the setState is not called. But if i set a breakpoint within the else part, i can see that this.state.usedFilters has changed.
| React native updates state "on its own" | CC BY-SA 4.0 | null | 2019-07-29T18:03:08.783 | 2019-07-30T15:15:08.520 | 2019-07-30T08:18:10.110 | 11,853,345 | 11,853,345 | [
"react-native",
"react-navigation",
"mobile-development"
] |
57,348,777 | 1 | 57,351,268 | null | 1 | 2,579 | I'm creating a project with React-Native, and currently when I try to compile my code I get an error saying `undefined is not an object (evaluating '_expo_.Asset.loadAsync')`
I'm not entirely sure what had caused this, for I entered a lot of code prior to compiling the project. However, from what I gathered this may have something to do with the fonts I'm importing?
currently this is what my code looks like for importing the font.
```
async componentDidMount() {
await cacheFonts({
georgia: require('../assets/fonts/Georgia.ttf'),
regular: require('../assets/fonts/Montserrat-Regular.ttf'),
light: require('../assets/fonts/Montserrat-Light.ttf'),
});
this.setState({ fontLoaded: true });
}
```
| Undefined is not an object (evaluating '_expo.Asset.loadAsync') | CC BY-SA 4.0 | null | 2019-08-04T17:29:17.263 | 2019-08-05T08:35:57.320 | null | null | 4,652,123 | [
"react-native",
"expo",
"mobile-development",
"react-native-elements"
] |
57,410,293 | 1 | null | null | 0 | 3,049 | I want to show the Text Input field which should be shown when the drop-down item is selected in react native
I use simple logic. I make a function with trying to pass the selected value to the function but the selected item is not found
```
export class ThirdPage extends Component{
static navigationOptions ={
title:"Register",
header:null
};
state = {
// user:'',
username: '',
phn: '',
address:'',
password:'',
// isLoggingIn: false,
text:''
};
displayacoountForm = (text)=>{
if({text} === "user"){
return <TextInput style={[styles.input]}
placeholder="Enter your phone number"
// underlineColorAndroid="transparent"
numberOfLines = {1}
onChangeText={(phn) => this.setState({ phn })}
/>
}
if({text} === "doctor"){
return <TextInput style={[styles.input]}
placeholder="Enter your password"
secureTextEntry={true}
// underlineColorAndroid="transparent"
numberOfLines = {1}
onChangeText={(password) => this.setState({ password })}
/>
}
if({text} === "clinic"){
<TextInput style={[styles.input]}
placeholder="Enter your phone clinic"
// underlineColorAndroid="transparent"
numberOfLines = {1}
onChangeText={(phn) => this.setState({ phn })}
/>
}
}
render(){
const data = [["user", "doctor", "clinic"]];
return(
<View style={[styles.wholecontainer,styles.verticalFlex,styles.backgroundColor1]}>
<Image
style={[styles.container1,styles.backgroundColor1,styles.position1]}
source={require('Finalapp/Images/createacc.png')}
/>
<Text style={[styles.headText,styles.position2]}>Create Your Account</Text>
<ScrollView style={[styles.backgroundColor1]}>
<View style={[styles.container2]}>
<TextInput style={[styles.input]}
placeholder="Enter your Name"
// underlineColorAndroid="transparent"
numberOfLines = {1}
onChangeText={(username) => this.setState({ username })}
/>
<TextInput style={[styles.input]}
placeholder="Enter your address"
// underlineColorAndroid="transparent"
numberOfLines = {1}
onChangeText={(address) => this.setState({address})}
/>
<TextInput style={[styles.input]}
placeholder="Enter your phone number"
// underlineColorAndroid="transparent"
numberOfLines = {1}
onChangeText={(phn) => this.setState({ phn })}
/>
<TextInput style={[styles.input]}
placeholder="Enter your password"
secureTextEntry={true}
// underlineColorAndroid="transparent"
numberOfLines = {1}
onChangeText={(password) => this.setState({ password })}
/>
<View style={[styles.container3]}>
<DropdownMenu
// style={[styles.container4]}
bgColor={'white'}
tintColor={'#666666'}
activityTintColor={'green'}
// arrowImg={}
// checkImage={}
// optionTextStyle={{color: '#333333'}}
// titleStyle={{color: '#333333'}}
// maxHeight={300}
handler={(selection, row) => this.setState({text: data[selection][row]})}
data={data}
>
<View style={[styles.backgroundColor1]}>
{this.displayacoountForm({this.state.text})}
</View>
</DropdownMenu>
</View>
<View style={[styles.button2]}>
<Button
// class="button"
onPress={()=>this.props.navigation.navigate('Login')}
title="Submit"
color="#29468f"
/>
</View>
</View>
</ScrollView>
</View>
)};
}
```
| Show the Text Input field when the drop down item is selected in react native | CC BY-SA 4.0 | null | 2019-08-08T10:17:16.197 | 2019-08-08T10:30:41.330 | 2019-08-08T10:21:09.380 | 2,219,208 | 11,901,199 | [
"android",
"reactjs",
"react-native",
"mobile-development"
] |
57,487,247 | 1 | null | null | 3 | 941 | I'm developing Flutter application to display Images in a listView
those images coming from the server, but when requesting them, and displaying them in a list,
I searched for how to store them in a database, and I found that just like any normal image but in JPEG format for compression needs
| Is there a flutter widget to display 360 degree Image? | CC BY-SA 4.0 | 0 | 2019-08-14T01:53:07.220 | 2021-09-20T15:37:14.267 | null | null | 8,297,657 | [
"flutter",
"mobile-development"
] |
57,487,923 | 1 | null | null | 0 | 107 | Do different colors effect the memory usage and CPU of an app ? For eg. A hello world application with red background, will it have more memory usage than a hello world application using black color as the background ?
| Memory and CPU usage with different colors in android | CC BY-SA 4.0 | null | 2019-08-14T03:48:42.680 | 2019-08-14T03:48:42.680 | null | null | 5,723,787 | [
"android",
"memory",
"cpu",
"profiler",
"mobile-development"
] |
57,544,967 | 1 | null | null | 1 | 2,428 | I am trying to implement JavaScript library to my mobile app that I am creating with React Native. This app should have flashcards with Chinese characters and its stroke order, but I dont know how to add this library to the react nor how to use it afterwards.
Library:
[https://github.com/chanind/hanzi-writer](https://github.com/chanind/hanzi-writer)
I already try it in the browser, everything works as described in docs, but I cant find a way to implement it in my mobile app.
In html I can do something like this to have a flashcard with one character
```
<html>
<head>
<title></title>
<script src="https://cdn.jsdelivr.net/npm/hanzi-writer@2.0.2/dist/hanzi-writer.min.js"> </script>
</head>
<body>
<div id="character-target-div"></div>
<script type="application/javascript">
var writer = HanziWriter.create('character-target-div', '我', {
width: 100,
height: 100,
padding: 5
});
writer.quiz();
</script>
</body>
</html>
```
| How to import javascript library to React Native project? | CC BY-SA 4.0 | null | 2019-08-18T13:19:52.650 | 2020-05-15T02:53:55.747 | null | null | 11,942,709 | [
"javascript",
"react-native",
"mobile-development"
] |
57,770,998 | 1 | 57,771,447 | null | 1 | 499 | I’m using TestFlight to test my build. I want to erase keychain data to test some behavior. How is this possible?
| How do we erase keychain data in TestFlight apps? | CC BY-SA 4.0 | null | 2019-09-03T11:40:35.273 | 2019-09-03T12:06:50.577 | null | null | 3,195,156 | [
"ios",
"keychain",
"mobile-development"
] |
57,866,009 | 1 | null | null | 0 | 183 | I'm looking to add a new property to a higher level (main level, I forget the terminology) of the json tree in my firebase real time database. I usually make my edits through the console. I've been able to add new properties at deeper levels but going up the json tree the console doesn't let me by saying: `Read-only & non-realtime mode activated in the data viewer to improve browser performance Select a key with fewer records to edit or view in realtime`
I thought about exporting, adding, then importing again (I've done this before at lower levels) but this seems a little scary having to essentially reimport the database just to add a new property. I've read the docs and they suggest using set method. How is this normally done?
| How to add another property to big JSON object in firebase real time database | CC BY-SA 4.0 | null | 2019-09-10T07:31:12.540 | 2019-09-10T21:09:57.163 | null | null | 5,184,956 | [
"json",
"firebase",
"react-native",
"firebase-realtime-database",
"mobile-development"
] |
57,906,567 | 1 | 57,907,801 | null | 0 | 488 | I'm planning to make an application that uses barcode scanning to scan UPC barcodes and maybe other barcode standards, I will be using firebase for database, I would like to have suggestions on which framework/tool for Mobile Development that I should use?
What I need in the framework is :
1. JS Libraries and packages support(NPM support would be Nice)
2. Community and tutorial Support(StackOverflow,github..etc)
3. CSS Libraries and icons support
4. Access to native features
5. I'll be developing for android but maybe I'll try to make it cross-platform later
I know about a few frameworks/tools Like ionic3, React Native, Android studio but I'm not sure which I should use?
| which framework is good for building barcode scanner mobile app? | CC BY-SA 4.0 | null | 2019-09-12T12:18:07.087 | 2019-09-12T13:27:38.253 | null | null | 10,066,387 | [
"ionic-framework",
"barcode",
"barcode-scanner",
"mobile-development"
] |
57,935,243 | 1 | null | null | 0 | 47 | I can't find a proper way to implement functionality of shared preference, to be clear I have added a "CheckBoxPreference" that will enable full screen mode/immersive mode, I know how to do it directly, but I don't know how to control its functionality.
Here, I have made a separate class for shared preference:
SharedPreferenceActivity.java
```
package com.nurujjamanpollob.website;
import android.preference.PreferenceActivity;
import android.os.Bundle;
import android.preference.*;
import android.content.*;
import android.view.*;
import android.os.*;
import android.app.*;
import java.util.prefs.*;
import android.widget.*;
import android.util.*;
public class PreferenceActivity extends PreferenceActivity {
SharedPreferences Preferences;
CheckBoxPreference checkbox;
@Override
protected void onCreate(Bundle savedInstanceState {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preferences); //set the default values we defined in the XML
PreferenceManager.setDefaultValues(this, R.xml.preferences, false);
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
}
}
```
And here is my, "res/xml/preferences.xml
```
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"> <PreferenceCatagory android:title="General Option <CheckBoxPreference android:key="immersive_mode" android:title="Full Screen Mode" android:summary="Enable Full Screen Mode" </PreferenceCatagory> </PreferenceScreen>
```
Or may I need to add something to main activity!
How to implement its action when I checked and unchecked?
Use a toast for introduce me Where to add my self code logic.
Sorry for my bad English!
| How to implement actions for CheckBoxPreference button? | CC BY-SA 4.0 | null | 2019-09-14T11:52:28.177 | 2019-09-15T02:21:12.743 | 2019-09-15T02:21:12.743 | 12,066,857 | 12,066,857 | [
"android",
"mobile-development"
] |
58,211,296 | 1 | 58,212,887 | null | 0 | 214 | I added a UIImageView on an ImageView, so i want to take screenshot of these two imageviews so that they look like one, any other recommendation is also appreciated.
I made a button that helped me take a screen shot, I have added x-axis and y axis,
```
func takeScreenshot(_ shouldSave: Bool = true) -> UIImage {
var screenshotImage :UIImage?
let layer = UIApplication.shared.keyWindow!.layer
let scale = UIScreen.main.scale
UIGraphicsBeginImageContextWithOptions(CGSize(width: 20, height: 104), false, scale);
guard let context = UIGraphicsGetCurrentContext() else {return screenshotImage ?? UIImage(imageLiteralResourceName: "loading")}
layer.render(in:context)
screenshotImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
if let image = screenshotImage, shouldSave {
UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil)
}
return screenshotImage ?? UIImage(named: "loading")!
}
```
I expect that the screenshot taken, takes the screenshot of the imageview. Screenshot is attached,[enter image description here](https://i.stack.imgur.com/b8Vdy.png)
| How can i pass both x and y axis along with height and width of Screen to take screenshot programmatically in swift | CC BY-SA 4.0 | null | 2019-10-03T01:41:19.637 | 2019-10-03T05:36:08.830 | 2019-10-03T04:29:23.280 | 4,305,676 | 11,081,150 | [
"ios",
"swift",
"imageview",
"customization",
"mobile-development"
] |
58,246,426 | 1 | null | null | 0 | 308 | I want to use firebase in my flutter app and I'm following the instructions
to use firebase and get that error.
```
Launching lib\main.dart on Google Nexus 5X, 8 0, API 26, 1080x1920 in debug mode...
Initializing gradle...
Resolving dependencies...
Running Gradle task 'assembleDebug'...
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
ERROR: [TAG] Failed to resolve variable '${junit.version}'
ERROR: [TAG] Failed to resolve variable '${animal.sniffer.version}'
```
FAILURE: Build failed with an exception.
- What went wrong:
Execution failed for task ':app:processDebugGoogleServices'.> No matching client found for package name 'com.technoscans.neolearn'- Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
- [https://help.gradle.org](https://help.gradle.org)
BUILD FAILED in 2m 18s
Finished with error: Gradle task assembleDebug failed with exit code 1
this is the build.gradle file
```
buildscript {
ext.kotlin_version = '1.2.71'
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.2.1'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
classpath 'com.google.gms:google-services:4.2.0'
}
}
allprojects {
repositories {
google()
jcenter()
}
}
rootProject.buildDir = '../build'
subprojects {
project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
project.evaluationDependsOn(':app')
}
task clean(type: Delete) {
delete rootProject.buildDir
}
```
this is the app/build.gradle file
```
def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
localPropertiesFile.withReader('UTF-8') { reader ->
localProperties.load(reader)
}
}
def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}
def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
flutterVersionCode = '1'
}
def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
flutterVersionName = '1.0'
}
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
android {
compileSdkVersion 28
sourceSets {
main.java.srcDirs += 'src/main/kotlin'
}
lintOptions {
disable 'InvalidPackage'
}
defaultConfig {
// TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
applicationId "com.technoscans.neolearn"
minSdkVersion 19
targetSdkVersion 28
versionCode flutterVersionCode.toInteger()
versionName flutterVersionName
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
// TODO: Add your own signing config for the release build.
// Signing with the debug keys for now, so `flutter run --release` works.
signingConfig signingConfigs.debug
}
}
}
flutter {
source '../..'
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
androidTestImplementation 'androidx.test:runner:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
}
apply plugin: 'com.google.gms.google-services'
```
| I'm using firebase in my flutter app and this error appeared to me | CC BY-SA 4.0 | 0 | 2019-10-05T07:52:15.287 | 2019-10-06T13:22:21.537 | 2019-10-06T13:22:21.537 | 3,396,821 | 6,121,632 | [
"flutter",
"mobile-development"
] |
58,312,912 | 1 | 58,316,962 | null | 0 | 1,272 | Hello I'm new in Java Android development and i was following a tutorial on how to fetch data from Imgur API.
After I finished the tutorial i tired the app but i don't see any images or data on the emulator bc i think that i did some mistake in my code.
If anyone can give me a sample how to implement the code or example.
Thank you in advance
Tutorial -> [https://progur.com/2016/11/create-imgur-client-android.html](https://progur.com/2016/11/create-imgur-client-android.html)
My Code -> [https://www.codepile.net/pile/A6bkN9eW](https://www.codepile.net/pile/A6bkN9eW)
| How to fetch images from Imgur API in Java | CC BY-SA 4.0 | null | 2019-10-09T22:06:39.937 | 2019-10-10T06:44:35.537 | null | null | 8,868,534 | [
"java",
"android",
"api",
"imgur",
"mobile-development"
] |
58,351,739 | 1 | null | null | 6 | 1,490 | I want to implement a plugin architecture in Flutter Dart. The process will be as follows:
1. User downloads the app.
2. The user loads plugins from our site.
3. The apps look if the plugin implements an interface.
4. If the interface is implemented then load information and widgets from the plugin to the app.
I've implemented the same process in C# using compiled DLL loading in runtime but unable to find it for Flutter.
I've looked into some of the previous questions and resource available on the internet and the closest one I found was this, [https://pub.dev/packages/plugins](https://pub.dev/packages/plugins) but the plugin is not supported in Dart 2 and deprecated
This was the code I implemented in C#.
```
int i = 0;
if (Directory.Exists("Plugins"))
{
dllFileNames = Directory.GetFiles("Plugins", "*.dll");
ICollection<Assembly> assemblies = new List<Assembly>(dllFileNames.Length);
foreach (string dllFile in dllFileNames)
{
AssemblyName an = AssemblyName.GetAssemblyName(dllFile);
Assembly assembly = Assembly.Load(an);
assemblies.Add(assembly);
}
Type pluginType = typeof(IPlugin);
List<Type> pluginTypes = new List<Type>();
foreach (Assembly assembly in assemblies)
{
if (assembly != null)
{
Type[] types = assembly.GetTypes();
foreach (Type type in types)
{
if (type.IsInterface || type.IsAbstract)
{
continue;
}
else if (pluginType.IsAssignableFrom(type))
{
pluginTypes.Add(type);
}
}
}
i++;
}
ICollection<IPlugin> plugins = new List<IPlugin>(pluginTypes.Count);
foreach (Type type in pluginTypes)
{
IPlugin plugin = (IPlugin)Activator.CreateInstance(type);
plugin.Initiate();
plugins.Add(plugin);
}
return plugins;
}
return null;
```
| How to implement the Plugin Architecture in Flutter Dart | CC BY-SA 4.0 | 0 | 2019-10-12T07:06:30.483 | 2022-01-05T18:43:41.153 | null | null | 3,606,825 | [
"flutter",
"dart",
"mobile-development",
"plugin-architecture"
] |
58,437,699 | 1 | null | null | 0 | 70 | Is there any way we can force hide mobile browser's address bar and footer (navigation bar) so all the page content is visible on web app?
| Hide address and browser footer on mobile jQuery | CC BY-SA 4.0 | null | 2019-10-17T17:14:17.593 | 2019-10-17T17:14:17.593 | null | null | 5,653,071 | [
"jquery",
"mobile-safari",
"mobile-development"
] |
58,573,202 | 1 | null | null | 0 | 253 | My activity works fine but when I include this code it suddenly crashes:
Does anyone know why this happens?
Without this code it doesn't crash. It crashes as soon as the activity opens, even when i don't call any function. What I am missing here?
I am using the latest version of Android Studio, and the .xml file doesn't have any errors, but the IDE doesn't detect any error on this code neither, could it be that the module is too old or something?
Also the "Activity.java" have a ton of errors, but as I said before when i simply remove the code below it runs fine. I am probably just missing some command or something, does anyone know how to help me with this?
It gives me the next error:
```
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.sltoolset, PID: 8778
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.sltoolset/com.example.sltoolset.Notas}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.pm.ApplicationInfo android.content.Context.getApplicationInfo()' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3194)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.pm.ApplicationInfo android.content.Context.getApplicationInfo()' on a null object reference
at android.content.ContextWrapper.getApplicationInfo(ContextWrapper.java:163)
at android.view.ContextThemeWrapper.getTheme(ContextThemeWrapper.java:174)
at android.content.Context.obtainStyledAttributes(Context.java:738)
at androidx.appcompat.app.AppCompatDelegateImpl.createSubDecor(AppCompatDelegateImpl.java:692)
at androidx.appcompat.app.AppCompatDelegateImpl.ensureSubDecor(AppCompatDelegateImpl.java:659)
at androidx.appcompat.app.AppCompatDelegateImpl.findViewById(AppCompatDelegateImpl.java:479)
at androidx.appcompat.app.AppCompatActivity.findViewById(AppCompatActivity.java:214)
at com.example.sltoolset.Notas.<init>(Notas.java:26)
at java.lang.Class.newInstance(Native Method)
at android.app.AppComponentFactory.instantiateActivity(AppComponentFactory.java:95)
at androidx.core.app.CoreComponentFactory.instantiateActivity(CoreComponentFactory.java:41)
at android.app.Instrumentation.newActivity(Instrumentation.java:1243)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3182)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
I/Process: Sending signal. PID: 8778 SIG: 9
Process 8778 terminated.
```
My code:
```
public static final String TEXT = "text";
private EditText edt1 = (EditText) findViewById(R.id.editText);
private String text;
public void guardar(View view)
{
SharedPreferences sp = getSharedPreferences(TEXT, MODE_PRIVATE);
SharedPreferences.Editor edt = sp.edit();
edt.putString(TEXT, edt1.getText().toString());
edt.apply();
Toast.makeText(this, "Se guardo el texto", Toast.LENGTH_SHORT).show();
}
public void cargar()
{
SharedPreferences sp = getSharedPreferences(TEXT, MODE_PRIVATE);
text = sp.getString(TEXT, "");
}
```
| Activity crashes when I include Shared Preferences | CC BY-SA 4.0 | null | 2019-10-26T17:39:52.670 | 2019-10-28T21:15:49.127 | 2019-10-28T20:49:56.207 | 4,479,165 | 10,504,014 | [
"java",
"android",
"android-studio-3.0",
"mobile-development"
] |
58,574,275 | 1 | null | null | 0 | 35 | We can upload and download data from firebase using both the packages. Is there some benefits of using FirebaseDatabase.instance.reference(). to do the same in flutter
| What is the difference between use of http and FirebaseDatabase.instance.reference() in flutter | CC BY-SA 4.0 | null | 2019-10-26T20:01:56.900 | 2019-10-26T23:27:17.380 | null | null | 12,273,354 | [
"http",
"firebase-realtime-database",
"flutter",
"mobile-development"
] |
58,661,364 | 1 | 58,662,662 | null | 0 | 56 | I created three Edit Text inputs and another set of inputs that should be added dynamically when you click on Add more button.
I want to collect the data submitted from the second activity and separating them according to how many times the add more button is clicked
My problem is when I click on the Submit button I can get the initial values of the static edit Text field in the second activity but I can't get the values of the dynamic edit Text.
I will appreciate any assistance offered
Thanks
The XML layout
```
<ScrollView
android:layout_width="match_parent"
android:layout_height="480dp"
android:paddingBottom="50dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="422dp"
android:layout_margin="5dp"
android:orientation="vertical">
<LinearLayout
android:id="@+id/parent_linear_layout"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<EditText
android:id="@+id/title_main"
android:layout_width="match_parent"
android:layout_height="46dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="52dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:ems="10"
android:hint="Enter product Title"
android:inputType="text"
android:paddingStart="20dp"
android:paddingLeft="20dp"
android:paddingTop="10dp"
android:paddingEnd="10dp"
android:paddingRight="10dp"
android:paddingBottom="10dp"
android:textSize="14sp" />
<EditText
android:id="@+id/product_name_main"
android:layout_width="match_parent"
android:layout_height="55dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="24dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:ems="10"
android:hint="Product Name"
android:inputType="text"
android:paddingStart="20dp"
android:paddingLeft="20dp"
android:paddingTop="10dp"
android:paddingEnd="10dp"
android:paddingRight="10dp"
android:paddingBottom="10dp"
android:textSize="14sp" />
<EditText
android:id="@+id/product_number_main"
android:layout_width="match_parent"
android:layout_height="55dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="24dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:ems="10"
android:hint="Product Number"
android:inputType="number"
android:paddingStart="20dp"
android:paddingLeft="20dp"
android:paddingTop="10dp"
android:paddingEnd="10dp"
android:paddingRight="10dp"
android:paddingBottom="10dp"
android:textSize="14sp" />
<Button
android:id="@+id/add_field_button"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginBottom="5dp"
android:background="#555"
android:onClick="onAddField"
android:paddingLeft="5dp"
android:text="Add Field"
android:textColor="#FFF" />
</LinearLayout>
</LinearLayout>
</ScrollView>
<Button
android:id="@+id/add_field_button"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginBottom="5dp"
android:background="#555"
android:onClick="onAddField"
android:paddingLeft="5dp"
android:text="Add Field"
android:textColor="#FFF" />
</LinearLayout>
```
The dynamic Layout
```
android:layout_height="50dp"
android:id="@+id/dynamic_layout"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="New Field"
android:layout_marginTop="32dp"
android:textAlignment="center"
android:textStyle="bold"
android:textSize="26dp"/>
<EditText
android:layout_width="match_parent"
android:layout_height="46dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="22dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:ems="10"
android:hint="Enter product Title"
android:inputType="text"
android:paddingStart="20dp"
android:paddingLeft="20dp"
android:paddingTop="10dp"
android:paddingEnd="10dp"
android:paddingRight="10dp"
android:paddingBottom="10dp"
android:textSize="14sp"
/>
<EditText
android:layout_width="match_parent"
android:layout_height="55dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="24dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:ems="10"
android:hint="Product Name"
android:inputType="text"
android:paddingStart="20dp"
android:paddingLeft="20dp"
android:paddingTop="10dp"
android:paddingEnd="10dp"
android:paddingRight="10dp"
android:paddingBottom="10dp"
android:textSize="14sp"
/>
<EditText
android:layout_width="match_parent"
android:layout_height="55dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="24dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:ems="10"
android:hint="Product Number"
android:inputType="number"
android:paddingStart="20dp"
android:paddingLeft="20dp"
android:paddingTop="10dp"
android:paddingEnd="10dp"
android:paddingRight="10dp"
android:paddingBottom="10dp"
android:textSize="14sp"
/>
<Button
android:id="@+id/delete_button"
android:layout_width="36dp"
android:layout_height="31dp"
android:layout_marginStart="10dp"
android:layout_marginLeft="10dp"
android:background="@android:drawable/ic_delete"
android:onClick="onDelete" />
```
The Activity.java
The add More button
```
public void onAddField(View v) {
dynamicEditTexts = new ArrayList<EditText>();//added this
LayoutInflater inflater = (LayoutInflater)
getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View rowView = inflater.inflate(R.layout.field, null);
// Add the new row before the add field button.
parentLinearLayout.addView(rowView, parentLinearLayout.getChildCount()
- 1);
EditText dynamicText = new EditText(this);//added this
// EditText dynamicText = rowView.findViewById(R.id.dynamic_layout);
dynamicEditTexts.add(dynamicText);
}
```
The Submit Button
```
public void getValue(View view) {
Intent intent = new Intent(MainActivity.this, Output.class);
titleM = findViewById(R.id.title_main);
productNameM = findViewById(R.id.product_name_main);
productNumberM = findViewById(R.id.product_number_main);
//getting the texts
String Title = titleM.getText().toString();
String PName = productNameM.getText().toString();
double PNumber =
Double.parseDouble(productNumberM.getText().toString());
// ******** FOR THE DYNAMIC EDITEXT FIELDS ************
String[] inputItems = new String[dynamicEditTexts.size()];
String string = String.valueOf(dynamicEditTexts.size());
for(int j = 0; j <dynamicEditTexts.size(); j++){
inputItems[j] = dynamicEditTexts.get(j).getText().toString();
intent.putExtra("dynamicData", inputItems[j]);
}
intent.putExtra("title", Title);
intent.putExtra("pname", PName);
intent.putExtra("pnumber", PNumber);
startActivity(intent);
finish();
}
```
The Output.class
```
//GETTING ITEMS FROM THE MAIN ACTIVITY
//for the static texts
String StaticProductTitle =
getIntent().getExtras().getString("title");
String StaticProductName = getIntent().getExtras().getString("pname");
double StaticProductNumber =
getIntent().getExtras().getDouble("pnumber");
//getting for the dynamic results
Intent collectDynamicData = getIntent();
ArrayList<String>alldynamicTexts = (ArrayList<String>)
collectDynamicData.getSerializableExtra("dynamicData");
//FORMATING THE NUMBERS TO DISPLAY IN A NUMBER PATTERN
DecimalFormat formate = new DecimalFormat();//"#,###,###"
String FormateStaticNumber;
String FormateDynamicNumber;
FormateStaticNumber = formate.format(StaticProductNumber);
FormateDynamicNumber = formate.format(alldynamicTexts);
//Setting the Results to the Static OutPut
StaticTitle.setText(StaticProductTitle);
StaticPName.setText(StaticProductName);
StaticPNumber.setText(FormateStaticNumber);
//Setting the Result of The Dynamic Outputs
DynamicPTitle.setText(FormateDynamicNumber);
//DynamicPTitle.setText((CharSequence) alldynamicTexts);
//DynamicPTitle.setText(array);
//DynamicPName.setText(DynamicProductName);
//DynamicPNumber.setText(FormateDynamicNumber);
}
```
UPDATE ON THE OUTPUT
```
Intent collectDynamicData = getIntent();
String[] dynamicItems = collectDynamicData.getStringArrayExtra("dynamicData");
ArrayList<String> alldynamicTexts = new ArrayList<>(Arrays.asList(dynamicItems));
String newText = (String.valueOf(alldynamicTexts));
DynamicPTitle.setText(newText);
```
| Collect and display separately the values of dynamic editTexts in second activity | CC BY-SA 4.0 | null | 2019-11-01T14:57:03.087 | 2019-11-04T13:27:14.807 | 2019-11-04T13:27:14.807 | 7,750,884 | 7,750,884 | [
"java",
"android",
"mobile-development"
] |
58,670,181 | 1 | null | null | 0 | 898 | How can I check if a button is currently active in flutter? Below is the image for the button I am trying to create:
[]
| How to check if a button is currently active in flutter? | CC BY-SA 4.0 | null | 2019-11-02T10:24:42.030 | 2019-11-02T13:39:32.177 | 2019-11-02T13:39:32.177 | 2,823,719 | 6,493,967 | [
"android",
"user-interface",
"flutter",
"mobile-development"
] |
58,842,646 | 1 | 59,085,486 | null | -1 | 603 | I'm facing a serious issue and don't know how to fix it, i'm a c# developper but i'm new to mobile development using xamarin in visual studio, i've dowloaded the xamarin with all the installation package, then i went throught all the step to creating a xamarin form, i've downloaded all the android sdk down to Nougat version (7)
But when to trying to run the app, it shows errors. I looked all over the internet but i got no correct answer. So if someone know a solution to this problem, please help me with this.
[See the picture of the errors list window after i click on the emulator](https://i.stack.imgur.com/IRi6v.jpg)
Please help me !!!!!!!
---------------------------------This part down is the message shown in the output window----------------------------------------
```
1>------ Début de la génération : Projet : App2, Configuration : Debug Any CPU ------
Detecting installed packages
Detecting installed packages...
Creating C:\Users\Aboubacar Traoré\AppData\Local\Xamarin.Android\Cache\Mono.Android.Platform.ApiLevel_28.apk
Creating C:\Users\Aboubacar Traoré\AppData\Local\Xamarin.Android\Cache\Mono.Android.Platform.ApiLevel_28.apk
Copying platform assemblies...
Copying platform assemblies...
Copying file: C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v4.4\Mono.Android.Export.dll
Copying file: C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v4.4\OpenTK-1.0.dll
Copying file: C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v9.0\Mono.Android.dll
Copying platform assemblies...
Creating: C:\Users\Aboubacar Traoré\AppData\Local\Temp\rx4qphcd.nr1\AndroidManifest.xml
Creating: C:\Users\Aboubacar Traoré\AppData\Local\Temp\rx4qphcd.nr1\unsigned.apk
Executing: C:\Program Files (x86)\Android\android-sdk\build-tools\28.0.3\aapt.exe package -f -0 .dll -0 .mdb -M "C:\Users\Aboubacar Traoré\AppData\Local\Temp\rx4qphcd.nr1\AndroidManifest.xml" -I "C:\Program Files (x86)\Android\android-sdk\platforms\android-28\android.jar" -F "C:\Users\Aboubacar Traoré\AppData\Local\Temp\rx4qphcd.nr1\unsigned.apk" -k "C:\Users\Aboubacar Traoré\AppData\Local\Temp\rx4qphcd.nr1\r"
Aapt
C:\Program Files (x86)\Android\android-sdk\build-tools\28.0.3\aapt.exe exited with value: 0
Aapt
Creating: C:\Users\Aboubacar Traoré\AppData\Local\Temp\rx4qphcd.nr1\unaligned.jar
Executing: C:\Program Files\Android\Jdk\microsoft_dist_openjdk_1.8.0.25\bin\jarsigner.EXE -keystore "C:\Users\Aboubacar Traoré\AppData\Local\Xamarin\Mono for Android\debug.keystore" -storepass android -keypass android -digestalg SHA1 -sigalg md5withRSA -signedjar "C:\Users\Aboubacar Traoré\AppData\Local\Temp\rx4qphcd.nr1\unaligned.jar" "C:\Users\Aboubacar Traoré\AppData\Local\Temp\rx4qphcd.nr1\unsigned.apk" androiddebugkey
jarsigner
jarsigner error: java.lang.RuntimeException: keystore load: C:\Users\Aboubacar Traoré\AppData\Local\Xamarin\Mono for Android\debug.keystore (Le chemin d’accès spécifié est introuvable)
C:\Program Files\Android\Jdk\microsoft_dist_openjdk_1.8.0.25\bin\jarsigner.EXE exited with value: 1
jarsigner
Removing temporary directory: C:\Users\Aboubacar Traoré\AppData\Local\Temp\rx4qphcd.nr1
Creating C:\Users\Aboubacar Traoré\AppData\Local\Xamarin.Android\Cache\Mono.Android.Platform.ApiLevel_28.apk
1>C:\Users\Aboubacar Traor├®\source\repos\App2\App2\obj\Debug\90\lp\11\jl\res : error APT0000: failed to open directory: Le fichier sp├®cifi├® est introuvable. (2).
1>C:\Users\Aboubacar Traor├®\source\repos\App2\App2\obj\Debug\90\lp\16\jl\res : error APT0000: failed to open directory: Le fichier sp├®cifi├® est introuvable. (2).
1>C:\Users\Aboubacar Traor├®\source\repos\App2\App2\obj\Debug\90\lp\30\jl\res : error APT0000: failed to open directory: Le fichier sp├®cifi├® est introuvable. (2).
1>C:\Users\Aboubacar Traor├®\source\repos\App2\App2\obj\Debug\90\lp\28\jl\res : error APT0000: failed to open directory: Le fichier sp├®cifi├® est introuvable. (2).
1>C:\Users\Aboubacar Traor├®\source\repos\App2\App2\obj\Debug\90\lp\12\jl\res : error APT0000: failed to open directory: Le fichier sp├®cifi├® est introuvable. (2).
1>C:\Users\Aboubacar Traor├®\source\repos\App2\App2\obj\Debug\90\lp\35\jl\res : error APT0000: failed to open directory: Le fichier sp├®cifi├® est introuvable. (2).
1>C:\Users\Aboubacar Traor├®\source\repos\App2\App2\obj\Debug\90\lp\29\jl\res : error APT0000: failed to open directory: Le fichier sp├®cifi├® est introuvable. (2).
1>C:\Users\Aboubacar Traor├®\source\repos\App2\App2\obj\Debug\90\lp\18\jl\res : error APT0000: failed to open directory: Le fichier sp├®cifi├® est introuvable. (2).
1>C:\Users\Aboubacar Traor├®\source\repos\App2\App2\obj\Debug\90\lp\31\jl\res : error APT0000: failed to open directory: Le fichier sp├®cifi├® est introuvable. (2).
========== Génération : 0 a réussi, 1 a échoué, 0 mis à jour, 0 a été ignoré ==========
========== Déploiement : 0 a réussi, 0 a échoué, 0 a été ignoré ==========
```
| How to proper setup for xamarin development as c# developper? | CC BY-SA 4.0 | null | 2019-11-13T17:36:43.897 | 2019-11-28T09:27:39.087 | 2019-11-14T07:52:57.073 | 1,000,551 | 11,621,476 | [
"c#",
"android",
"xamarin",
"android-sdk-tools",
"mobile-development"
] |