Black Screen when i run your Demo

[trey-rosius]

Hi, I get a black screen when i run your demo both on the emulator and as a release on a real device. I also updated the agora SDK plugin to 3.2.1 Flutter Doctor `[✓] Flutter (Channel beta, 1.25.0-8.1.pre, on macOS 11.1 20C69 darwin-x64, locale en-CM) • Flutter version 1.25.0-8.1.pre at /Users/imac/Documents/flutter • Framework revision 8f89f6505b (5 weeks ago), 2020-12-15 15:07:52 -0800 • Engine revision 92ae191c17 • Dart version 2.12.0 (build 2.12.0-133.2.beta)

[!] Android toolchain - develop for Android devices (Android SDK version 30.0.3) • Android SDK at /Users/imac/Library/Android/sdk • Platform android-30, build-tools 30.0.3 • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495) ! Some Android licenses not accepted. To resolve this, run: flutter doctor --android-licenses

[✓] Xcode - develop for iOS and macOS (Xcode 12.3) • Xcode at /Applications/Xcode.app/Contents/Developer • Xcode 12.3, Build version 12C33 • CocoaPods version 1.10.0

[✓] Android Studio (version 4.1) • Android Studio at /Applications/Android Studio.app/Contents • Flutter plugin can be installed from: 🔨 https://plugins.jetbrains.com/plugin/9212-flutter • Dart plugin can be installed from: 🔨 https://plugins.jetbrains.com/plugin/6351-dart • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)

[✓] Connected device (2 available) • Redmi Note 8 Pro (mobile) • wstoiz5ps4d6r8em • android-arm64 • Android 9 (API 28) • sdk gphone x86 (mobile) • emulator-5554 • android-x86 • Android 11 (API 30) (emulator)

Here's the exception i get when i run the app on a real device E/flutter ( 1557): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: PlatformException(error, width, height, and densityDpi must be greater than 0, null, java.lang.IllegalArgumentException: width, height, and densityDpi must be greater than 0 E/flutter ( 1557): at android.hardware.display.DisplayManagerGlobal.createVirtualDisplay(DisplayManagerGlobal.java:406) E/flutter ( 1557): at android.hardware.display.DisplayManager.createVirtualDisplay(DisplayManager.java:627) E/flutter ( 1557): at android.hardware.display.DisplayManager.createVirtualDisplay(DisplayManager.java:618) E/flutter ( 1557): at android.hardware.display.DisplayManager.createVirtualDisplay(DisplayManager.java:569) E/flutter ( 1557): at io.flutter.plugin.platform.VirtualDisplayController.create(Unknown Source:43) E/flutter ( 1557): at io.flutter.plugin.platform.PlatformViewsController$1.createVirtualDisplayForPlatformView(Unknown Source:110) E/flutter ( 1557): at io.flutter.embedding.engine.systemchannels.PlatformViewsChannel$1.create(Unknown Source:152) E/flutter ( 1557): at io.flutter.embedding.engine.systemchannels.PlatformViewsChannel$1.onMethodCall(Unknown Source:144) E/flutter ( 1557): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(Unknown Source:17) E/flutter ( 1557): at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(Unknown Source:57) E/flutter ( 1557): at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(Unknown Source:4) E/flutter ( 1557): at android.os.MessageQueue.nativePollOnce(Native Method) E/flutter ( 1557): at android.os.MessageQueue.next(MessageQueue.java:326) E/flutter ( 1557): at android.os.Looper.loop(Looper.java:165) E/flutter ( 1557): at android.app.ActivityThread.main(ActivityThread.java:6831) E/flutter ( 1557): at java.lang.reflect.Method.invoke(Native Method) E/flutter ( 1557): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547) E/flutter ( 1557): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:927) E/flutter ( 1557): ) E/flutter ( 1557): #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:582) E/flutter ( 1557): #1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:159) E/flutter ( 1557): E/flutter ( 1557): #2 TextureAndroidViewController._sendCreateMessage (package:flutter/src/services/platform_views.dart:1037) E/flutter ( 1557): E/flutter ( 1557): #3 AndroidViewController.create (package:flutter/src/services/platform_views.dart:743) E/flutter ( 1557): E/flutter ( 1557): #4 RenderAndroidView._sizePlatformView (package:flutter/src/rendering/platform_view.dart:195) E/flutter ( 1557): E/flutter ( 1557): E/flutter ( 1557): [ERROR:flutter/flow/layers/transform_layer.cc(24)] TransformLayer is constructed with an invalid matrix. E/flutter ( 1557): [ERROR:flutter/flow/layers/transform_layer.cc(24)] TransformLayer is constructed with an invalid matrix. E/flutter ( 1557): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: PlatformException(error, width, height, and densityDpi must be greater than 0, null, java.lang.IllegalArgumentException: width, height, and densityDpi must be greater than 0 E/flutter ( 1557): at android.hardware.display.DisplayManagerGlobal.createVirtualDisplay(DisplayManagerGlobal.java:406) E/flutter ( 1557): at android.hardware.display.DisplayManager.createVirtualDisplay(DisplayManager.java:627) E/flutter ( 1557): at android.hardware.display.DisplayManager.createVirtualDisplay(DisplayManager.java:618) E/flutter ( 1557): at android.hardware.display.DisplayManager.createVirtualDisplay(DisplayManager.java:569) E/flutter ( 1557): at io.flutter.plugin.platform.VirtualDisplayController.create(Unknown Source:43) E/flutter ( 1557): at io.flutter.plugin.platform.PlatformViewsController$1.createVirtualDisplayForPlatformView(Unknown Source:110) E/flutter ( 1557): at io.flutter.embedding.engine.systemchan`

pubspec.yaml agora_rtc_engine: ^3.1.3 permission_handler: ^5.0.1

proguard rules

-keep class io.agora.**{*;}
-keep class io.flutter.app.** { *; }
-keep class io.flutter.plugin.**  { *; }
-keep class io.flutter.util.**  { *; }
-keep class io.flutter.view.**  { *; }
-keep class io.flutter.**  { *; }
-keep class io.flutter.plugins.**  { *; }

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
            minifyEnabled true
            useProguard true

            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }

I'll appreciate any help on this. Thanks

[LichKing-2234]

maybe you can try the stable channel, it seems like a bug from flutter.

[LichKing-2234]

It works on my device, my flutter doctor

[✓] Flutter (Channel stable, 1.22.4, on macOS 11.1 20C69 darwin-x64, locale
    zh-Hans-CN)

[trey-rosius]

Thanks a ton for the the swift feedback. I'll revert with updates

[trey-rosius]

Same black screen. Here's my flutter doctor

`[✓] Flutter (Channel stable, 1.22.5, on macOS 11.1 20C69 darwin-x64, locale en-CM) • Flutter version 1.22.5 at /Users/imac/Documents/flutter • Framework revision 7891006299 (6 weeks ago), 2020-12-10 11:54:40 -0800 • Engine revision ae90085a84 • Dart version 2.10.4

[!] Android toolchain - develop for Android devices (Android SDK version 30.0.3) • Android SDK at /Users/imac/Library/Android/sdk • Platform android-30, build-tools 30.0.3 • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495) ! Some Android licenses not accepted. To resolve this, run: flutter doctor --android-licenses

[✓] Xcode - develop for iOS and macOS (Xcode 12.3) • Xcode at /Applications/Xcode.app/Contents/Developer • Xcode 12.3, Build version 12C33 • CocoaPods version 1.10.0

[!] Android Studio (version 4.1) • Android Studio at /Applications/Android Studio.app/Contents ✗ Flutter plugin not installed; this adds Flutter specific functionality. ✗ Dart plugin not installed; this adds Dart specific functionality. • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)

[!] Connected device ! No devices available

! Doctor found issues in 3 categories. `

Here's the github repo incase you wish to run it https://github.com/trey-rosius/agora_flutter_sample

[LichKing-2234]

here is the difference between your repository with our repository.

you use Contaner widget to wrap our widget, but you have not set the width and height.

[trey-rosius]

Thanks alot @LichKing-2234 . Changing Container to Expanded solved the issue. Thanks again for the support. I'm going to close this issue now.