App crashes on launch

[KrrishChheda04]

when I downloaded the example file from git their code works properly but when implemented the same code in my app the app straight away crashes with an error:

Running Gradle task 'assembleDebug'... √ Built build\app\outputs\flutter-apk\app-debug.apk. Installing build\app\outputs\flutter-apk\app.apk... Debug service listening on ws://127.0.0.1:54105/Id2yfbjio-E=/ws Syncing files to device SM M515F... D/Dialog ( 6596): mIsSamsungBasicInteraction = false D/Dialog ( 6596): mIsSamsungBasicInteraction = false, isMetaDataInActivity = false D/PhoneWindow( 6596): forceLight changed to true from com.android.internal.policy.PhoneWindow.updateForceLightNavigationBar:4274 com.android.internal.policy.DecorView.updateColorViews:1547 com.android.internal.policy.PhoneWindow.dispatchWindowAttributesChanged:3252 android.view.Window.setFlags:1153 com.android.internal.policy.PhoneWindow.generateLayout:2474 I/MultiWindowDecorSupport( 6596): [INFO] isPopOver = false I/MultiWindowDecorSupport( 6596): updateCaptionType >> DecorView@d8c1171[], isFloating: false, isApplication: false, hasWindowDecorCaption: false, hasWindowControllerCallback: false D/MultiWindowDecorSupport( 6596): setCaptionType = 0, DecorView = DecorView@d8c1171[] W/Gralloc3( 6596): allocator 3.x is not supported I/ViewRootImpl@9657a73MainActivity: setView = com.android.internal.policy.DecorView@d8c1171 TM=true MM=false E/AndroidRuntime( 6596): FATAL EXCEPTION: main E/AndroidRuntime( 6596): Process: com.example.video, PID: 6596 E/AndroidRuntime( 6596): java.lang.AbstractMethodError: abstract method "void io.flutter.plugin.platform.PlatformView.onFlutterViewAttached(android.view.View)" E/AndroidRuntime( 6596): at io.flutter.plugin.platform.VirtualDisplayController.onFlutterViewAttached(VirtualDisplayController.java:181) E/AndroidRuntime( 6596): at io.flutter.plugin.platform.PlatformViewsController$1.createVirtualDisplayForPlatformView(PlatformViewsController.java:233) E/AndroidRuntime( 6596): at io.flutter.embedding.engine.systemchannels.PlatformViewsChannel$1.create(PlatformViewsChannel.java:104) E/AndroidRuntime( 6596): at io.flutter.embedding.engine.systemchannels.PlatformViewsChannel$1.onMethodCall(PlatformViewsChannel.java:59) E/AndroidRuntime( 6596): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:233) E/AndroidRuntime( 6596): at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:85) E/AndroidRuntime( 6596): at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:738) E/AndroidRuntime( 6596): at android.os.MessageQueue.nativePollOnce(Native Method) E/AndroidRuntime( 6596): at android.os.MessageQueue.next(MessageQueue.java:336) E/AndroidRuntime( 6596): at android.os.Looper.loop(Looper.java:197) E/AndroidRuntime( 6596): at android.app.ActivityThread.main(ActivityThread.java:8167) E/AndroidRuntime( 6596): at java.lang.reflect.Method.invoke(Native Method) E/AndroidRuntime( 6596): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:496) E/AndroidRuntime( 6596): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1100) I/Process ( 6596): Sending signal. PID: 6596 SIG: 9 Lost connection to device.

Main.dart

import 'dart:typed_data';

import 'package:flutter/material.dart'; import 'package:flutter_vlc_player/flutter_vlc_player.dart';

void main() => runApp(MyApp());

class MyApp extends StatefulWidget { @override _MyAppState createState() => new _MyAppState(); }

class _MyAppState extends State { @override Widget build(BuildContext context) { return new MaterialApp(home: MyAppScaffold()); } }

class MyAppScaffold extends StatefulWidget { @override State createState() => MyAppScaffoldState(); }

class MyAppScaffoldState extends State { String initUrl = "http://samples.mplayerhq.hu/MPEG-4/embedded_subs/1Video_2Audio_2SUBs_timed_text_streams_.mp4"; Uint8List image; VlcPlayerController _videoViewController;

var _scaffoldKey = new GlobalKey(); @override void initState() { _videoViewController = new VlcPlayerController(onInit: () { _videoViewController.play(); }); super.initState(); }

@override Widget build(BuildContext context) { return new Scaffold( key: _scaffoldKey, appBar: new AppBar( title: const Text('Plugin example app'), ), floatingActionButton: FloatingActionButton( child: Icon(Icons.camera), onPressed: _createCameraImage, ), body: Builder(builder: (context) { return Container( padding: EdgeInsets.all(10), child: ListView( shrinkWrap: true, children: [ SizedBox( height: 250, child: new VlcPlayer( aspectRatio: 16 / 9, url: initUrl, isLocalMedia: false, controller: _videoViewController, ), ), Divider(height: 1), image == null ? Container() : Container(child: Image.memory(image)), ], ), ); }), ); }

@override void dispose() { _videoViewController.dispose(); super.dispose(); }

void _createCameraImage() async { Uint8List file = await _videoViewController.takeSnapshot(); setState(() { image = file; }); } }

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" package="com.example.video".>

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.INTERNET" />

<application android:label="video" android:icon="@mipmap/ic_launcher" android:usesCleartextTraffic="true"> <activity android:name=".MainActivity" android:launchMode="singleTop" android:theme="@style/LaunchTheme" android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode" android:hardwareAccelerated="true" android:windowSoftInputMode="adjustResize" tools:ignore="Instantiatable"> <meta-data android:name="io.flutter.embedding.android.NormalTheme" android:resource="@style/NormalTheme" /> <meta-data android:name="io.flutter.embedding.android.SplashScreenDrawable" android:resource="@drawable/launch_background" />

    </activity>
    <!-- Don't delete the meta-data below.
         This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
    <meta-data
        android:name="flutterEmbedding"
        android:value="2" />
</application>

Please help me getting the solution. I desperately need to complete my app for project

[fabianosanttana]

Same issue here, android app breaks when published with the plugin

[KrrishChheda04]

Please help me if you find a solution

[silent-chan]

same issue, works fine in debug but when making release apk it crashes as soon the VLC widget is used

[AtixD]

@silent-chan , @KrrishChheda04 , @fabianosanttana

Yep, It's the problem if you use > ver. 4.0. Cause, Plugin use v. vlc for android >= 3.3+ and current sdk v3.3+ has problem when build as release for android x86.

You should use 3.1+ sdk vlc into build.gradle

For example https://github.com/solid-software/flutter_vlc_player/blob/3.0.7/android/build.gradle

com.steiner.videolan:libvlc-android:3.1.7

[silent-chan]

EDIT: I just got this working with the latest version Had some time to refactor my code to the newest flutter_vlc package. Turns out all you need is the minifyEnabled false & shrinkResources false flags in your android/app/build.gradle file. (along with the internet permission tag & minsdk version as shown below) Did a flutter clean first before re-installing the application.

Old comment: I just got a release working here is how i did it:

• made new project with flutter create

• in the new project removed the lib folder and pubspec.yaml file

• copied over the lib folder, assets folder (if you have any assets) and the pubspec.yaml file from the existing project

• changed vlc package version in my pubspec.yaml to flutter_vlc_player: ^3.0.7 (could be that you have to do a bit refactoring of your code after running pub get)

• ran flutter pub get

• edit android/app/build.gradle set minSdkVersion to 17 & include in minifyEnabled false and shrinkResources false under buildTypes:

• in android/app/src/main/AndroidManifest.xml include the internet permission <uses-permission android:name="android.permission.INTERNET" />

• Make your apk as usual following the flutter tutorial on it, or if you want an unsigned APK just run these:

  1. flutter build appbundle
  2. flutter build apk --split-per-abi
  3. flutter install & select your device you want to install to

[jefersonboesing]

The app was crashing in release mode for me and instead of setting minifyEnabled to false I was able to solve the issue by adding -keep class org.videolan.libvlc.** { *; } in the proguard file.