Example do not work

[tabuz]

I'm trying to play a bit with your plugin but I can't get example running.
Recording seems to be working as I can see feedback with power of microphone,
calling startPlay method returns FAIL.

I use SDK 27, Flutter: 0.1.5

I/flutter ( 8509): PARAMS{file: 1521839341296, position: 0.0}
E/MethodChannel#medcorder_audio( 8509): Failed to handle method call
E/MethodChannel#medcorder_audio( 8509): java.lang.NullPointerException: context param can not be null.
E/MethodChannel#medcorder_audio( 8509): 	at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1036)
E/MethodChannel#medcorder_audio( 8509): 	at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1003)
E/MethodChannel#medcorder_audio( 8509): 	at android.media.MediaPlayer.create(MediaPlayer.java:910)
E/MethodChannel#medcorder_audio( 8509): 	at android.media.MediaPlayer.create(MediaPlayer.java:887)
E/MethodChannel#medcorder_audio( 8509): 	at android.media.MediaPlayer.create(MediaPlayer.java:866)
E/MethodChannel#medcorder_audio( 8509): 	at co.medcorder.medcorderaudio.MedcorderAudioPlugin.startPlay(MedcorderAudioPlugin.java:227)
E/MethodChannel#medcorder_audio( 8509): 	at co.medcorder.medcorderaudio.MedcorderAudioPlugin.onMethodCall(MedcorderAudioPlugin.java:90)
E/MethodChannel#medcorder_audio( 8509): 	at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:191)
E/MethodChannel#medcorder_audio( 8509): 	at io.flutter.view.FlutterNativeView.handlePlatformMessage(FlutterNativeView.java:133)
E/MethodChannel#medcorder_audio( 8509): 	at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#medcorder_audio( 8509): 	at android.os.MessageQueue.next(MessageQueue.java:325)
E/MethodChannel#medcorder_audio( 8509): 	at android.os.Looper.loop(Looper.java:142)
E/MethodChannel#medcorder_audio( 8509): 	at android.app.ActivityThread.main(ActivityThread.java:6494)
E/MethodChannel#medcorder_audio( 8509): 	at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#medcorder_audio( 8509): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
E/MethodChannel#medcorder_audio( 8509): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
I/flutter ( 8509): startPlay: fail

Would you be able to help with it?
Many Thanks

---

# Edit:

I found the issue:
there is context assignment missing in plugin java file MedcorderAudioPlugin.java

You just need to update it so it is:

 MedcorderAudioPlugin(Activity _activity) {
    this.activity = _activity;
    this.context = activity.getApplicationContext();
  }

[matejthetree]

@tabuz can you maybe create a fork with a fix, I would like to use your code while we wait for pull request or fix. thx.

[tabuz]

@matejthetree https://github.com/tabuz/flutter_audio

[matejthetree]

Hey bro, I get this with your fork
https://gist.github.com/matejthetree/9efc277187f171e0dd32366464d5df70

I am just trying to initialize it

MedcorderAudio _audioPlayer = new MedcorderAudio();

[tabuz]

Weird looking error. Nothing comes to my mind. If you want to share the source i might have a look a try to help then. Does the example project from medcorder_audio plugin works fine for you?

[matejthetree]

adding this after line 23 in android/build.gradle resolves java warning

    gradle.projectsEvaluated {
        tasks.withType(JavaCompile) {
            options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation"
        }
    }

[john2088]

not work for me

[jeanpaulcozzatti]

i had an app that was working for me.
now i get this, even with the example.

perhaps related underlying cause: ? flutter/flutter#15654
i'm going to have to switch libraries...

2018-05-01 10:17:34.627949-0700 Runner[52813:1608279] flutter: Observatory listening on http://127.0.0.1:61887/
2018-05-01 10:17:34.786834-0700 Runner[52813:1608248] flutter: ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
2018-05-01 10:17:34.793689-0700 Runner[52813:1608248] flutter: The following assertion was thrown attaching to the render tree:
2018-05-01 10:17:34.794099-0700 Runner[52813:1608248] flutter: type '(Map<String, dynamic>) => void' is not a subtype of type '(dynamic) => void'
2018-05-01 10:17:34.803361-0700 Runner[52813:1608248] flutter:
2018-05-01 10:17:34.803674-0700 Runner[52813:1608248] flutter: Either the assertion indicates an error in the framework itself, or we should provide substantially

[ThinkDigitalSoftware]

I'm getting the same error as @jeanpaulcozzatti

[jeanpaulcozzatti]

I've forked and patched the repo here: https://github.com/jeanpaulcozzatti/flutter_audio

[dimmetrius]

New version with Dart 2 Compatibility published