[ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: PlatformException(startRecorder, startRecorder, Failure to start recorder, null)

This error happens to me even if I make toFile: ‘flutter_example.aac’ as in the package example … here is my log:

I/flutter (15733): ---> openRecorderCompleted: true
I/flutter (15733): <--- openRecorderCompleted: true
I/flutter (15733): <--- openAudioSession
I/flutter (15733): FS:<--- openAudioSession
I/flutter (15733): ********* record outputpath : /data/user/0/com.q8intouch.hareem/cache/c34s2.aac
I/flutter (15733): FS:---> startRecorder
I/flutter (15733): FS:---> _startRecorder.
I/flutter (15733): Calling instance.startRecorder
E/MediaRecorder(15733): start failed: -38
E/SoundMediaRecorder(15733): Exception:
E/SoundMediaRecorder(15733): java.lang.IllegalStateException
E/SoundMediaRecorder(15733): 	at android.media.MediaRecorder.start(Native Method)
E/SoundMediaRecorder(15733): 	at com.dooboolab.TauEngine.q.a(:182)
E/SoundMediaRecorder(15733): 	at com.dooboolab.TauEngine.m.r(:239)
E/SoundMediaRecorder(15733): 	at f.e.b.e.M(:259)
E/SoundMediaRecorder(15733): 	at f.e.b.f.onMethodCall(:118)
E/SoundMediaRecorder(15733): 	at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(:233)
E/SoundMediaRecorder(15733): 	at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(:85)
E/SoundMediaRecorder(15733): 	at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(:818)
E/SoundMediaRecorder(15733): 	at android.os.MessageQueue.nativePollOnce(Native Method)
E/SoundMediaRecorder(15733): 	at android.os.MessageQueue.next(MessageQueue.java:325)
E/SoundMediaRecorder(15733): 	at android.os.Looper.loop(Looper.java:142)
E/SoundMediaRecorder(15733): 	at android.app.ActivityThread.main(ActivityThread.java:6494)
E/SoundMediaRecorder(15733): 	at java.lang.reflect.Method.invoke(Native Method)
E/SoundMediaRecorder(15733): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
E/SoundMediaRecorder(15733): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
E/MediaRecorder(15733): resume called in an invalid state: 0
E/MediaRecorder(15733): stop called in an invalid state: 0
D/SoundMediaRecorder(15733): Error Stop Recorder
E/FlautoRecorder(15733): Error starting recordernull
E/flutter (15733): [ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: PlatformException(startRecorder, startRecorder, Failure to start recorder, null)
E/flutter (15733): #0      StandardMethodCodec.decodeEnvelope
package:flutter/…/services/message_codecs.dart:597
E/flutter (15733): #1      MethodChannel._invokeMethod
package:flutter/…/services/platform_channel.dart:158
E/flutter (15733): <asynchronous suspension>
E/flutter (15733): #2      FlutterSoundRecorder._startRecorder
package:flutter_sound/public/flutter_sound_recorder.dart:662
E/flutter (15733): <asynchronous suspension>
E/flutter (15733): #3      FlutterSoundRecorder.startRecorder.<anonymous closure>
package:flutter_sound/public/flutter_sound_recorder.dart:584
E/flutter (15733): <asynchronous suspension>
E/flutter (15733): #4      BasicLock.synchronized
package:synchronized/src/basic_lock.dart:33
E/flutter (15733): <asynchronous suspension>
E/flutter (15733): #5      FlutterSoundRecorder.startRecorder
package:flutter_sound/public/flutter_sound_recorder.dart:583
E/flutter (15733): <asynchronous suspension>

[mhstoller]

No, actually I’ve run it on my device and it gets past the startRecorder portion on my phone.

What device and android version are you using for development @AbdallahLabib ?

I/flutter ( 5167): ********* record outputpath : /data/user/0/com.example.recorder_problem/cache/aIy3i.aac
I/flutter ( 5167): FS:---> startRecorder
I/flutter ( 5167): FS:---> _startRecorder.
I/flutter ( 5167): Calling instance.startRecorder
I/flutter ( 5167): ---> startRecorderCompleted: true
I/flutter ( 5167): <--- startRecorderCompleted: true
I/flutter ( 5167): FS:<--- _startRecorder.
I/flutter ( 5167): FS:<--- startRecorder
2
I/flutter ( 5167): FS:---> stopRecorder
I/flutter ( 5167): FS:---> stop
I/flutter ( 5167): ---> stopRecorderCompleted: true
I/flutter ( 5167): <---- stopRecorderCompleted: true
I/flutter ( 5167): FS:<--- stop
I/flutter ( 5167): FS:<--- stopRecorder : /data/user/0/com.example.recorder_problem/cache/aIy3i.aac

[mhstoller]

Can you provide the exact code you’re using to open the audio session and start the recorder? Also can you provide the output of flutter pub deps | grep flutter_sound?