[BUG] AndroidAlarmManager.initialize messes up flutter_sound recording/playing

Flutter Sound Version :

• flutter_sound: ^4.0.0

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Severity

• Crash

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Platforms you faced the error

• Android Emulator

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Logs

E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): java.lang.NullPointerException: Attempt to invoke virtual method 'void com.dooboolab.fluttersound.FlutterSoundPlayer.stopPlayer(io.flutter.plugin.common.MethodCall, io.flutter.plugin.common.MethodChannel$Result)' on a null object reference
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at com.dooboolab.fluttersound.FlautoPlayerPlugin.onMethodCall(FlutterSoundPlayer.java:167)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:231)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:93)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:642)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at android.os.MessageQueue.next(MessageQueue.java:336)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at android.os.Looper.loop(Looper.java:174)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at android.app.ActivityThread.main(ActivityThread.java:7356)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
I/flutter ( 9765): PlatformException(error, Attempt to invoke virtual method 'void com.dooboolab.fluttersound.FlutterSoundPlayer.stopPlayer(io.flutter.plugin.common.MethodCall, io.flutter.plugin.common.MethodChannel$Result)' on a null object reference, null)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): Failed to handle method call
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): java.lang.NullPointerException: Attempt to invoke virtual method 'void com.dooboolab.fluttersound.FlutterSoundPlayer.startPlayer(io.flutter.plugin.common.MethodCall, io.flutter.plugin.common.MethodChannel$Result)' on a null object reference
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at com.dooboolab.fluttersound.FlautoPlayerPlugin.onMethodCall(FlutterSoundPlayer.java:155)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:231)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:93)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:642)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at android.os.MessageQueue.next(MessageQueue.java:336)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at android.os.Looper.loop(Looper.java:174)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at android.app.ActivityThread.main(ActivityThread.java:7356)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
E/MethodChannel#com.dooboolab.flutter_sound_player( 9765): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
I/flutter ( 9765): Play error: Exception: PlatformException(error, Attempt to invoke virtual method 'void com.dooboolab.fluttersound.FlutterSoundPlayer.startPlayer(io.flutter.plugin.common.MethodCall, io.flutter.plugin.common.MethodChannel$Result)' on a null object reference, null)

or with recorder:

E/MethodChannel#com.dooboolab.flutter_sound_recorder( 9908): java.lang.NullPointerException: Attempt to invoke virtual method 'void com.dooboolab.fluttersound.FlutterSoundRecorder.isEncoderSupported(io.flutter.plugin.common.MethodCall, io.flutter.plugin.common.MethodChannel$Result)' on a null object reference
E/MethodChannel#com.dooboolab.flutter_sound_recorder( 9908): 	at com.dooboolab.fluttersound.FlautoRecorderPlugin.onMethodCall(FlutterSoundRecorder.java:149)
E/MethodChannel#com.dooboolab.flutter_sound_recorder( 9908): 	at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:231)
E/MethodChannel#com.dooboolab.flutter_sound_recorder( 9908): 	at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:93)
E/MethodChannel#com.dooboolab.flutter_sound_recorder( 9908): 	at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:642)
E/MethodChannel#com.dooboolab.flutter_sound_recorder( 9908): 	at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#com.dooboolab.flutter_sound_recorder( 9908): 	at android.os.MessageQueue.next(MessageQueue.java:336)
E/MethodChannel#com.dooboolab.flutter_sound_recorder( 9908): 	at android.os.Looper.loop(Looper.java:174)
E/MethodChannel#com.dooboolab.flutter_sound_recorder( 9908): 	at android.app.ActivityThread.main(ActivityThread.java:7356)
E/MethodChannel#com.dooboolab.flutter_sound_recorder( 9908): 	at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#com.dooboolab.flutter_sound_recorder( 9908): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
E/MethodChannel#com.dooboolab.flutter_sound_recorder( 9908): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
I/flutter ( 9908): startRecording error: PlatformException(error, Attempt to invoke virtual method 'void com.dooboolab.fluttersound.FlutterSoundRecorder.isEncoderSupported(io.flutter.plugin.common.MethodCall, io.flutter.plugin.common.MethodChannel$Result)' on a null object reference, null)

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flutter pub deps :

dependencies:
  flutter:
    sdk: flutter
  english_words: 3.1.5
  flutter_sound: ^4.0.0
  provider: ^4.0.4
  path_provider: ^1.6.5
  android_alarm_manager: ^0.4.5

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Describe the bug

I tried to use FlutterSoundRecorder and FlutterSoundPlayer and all worked fine until I tried to use android_alarm_manager. After this flutter_sound always crashes with the above exception.

To Reproduce Steps to reproduce the behavior:

1. Having your usual code that uses await _player.startPlayer(filePath) or recorder, and all works fine.
2. Add android_alarm_manager: ^0.4.5 to pubspec.yaml.
3. Execute await AndroidAlarmManager.initialize(); somewhere in your code.
4. You will get one of the above exceptions.

Expected behavior Sound plays or message recorded.

Possible reasons Something happens with static data in Android implementation of flutter_sound, it becomes null, for example, slots on https://github.com/dooboolab/flutter_sound/blob/master/android/src/main/java/com/dooboolab/fluttersound/FlutterSoundPlayer.java#L76

Forgot to say: thanks for taking your time checking this! 😃

[Larpoux]

Just curious, is this issue somehow related? 😃 #340

Yes, it is possible that it is related. Several issues have been reported on Android about Flutter Sound compatibility with other plugins doing things with services.

We are actually working on a new version of Flutter Sound which will not use Services on Android. This version is supposed to be released next week. I really bet that this release will solve this issue.

[AbdullahLabib22]

Any updates regarding this issue @Larpoux ?