Android Question b4a audio record premission exception

Addo · Mar 30, 2018

i am trying to record from the microphone in the service and when ever i try to start recording i got permission exception

java.lang.RuntimeException: java.lang.IllegalStateException: startRecording() called on an uninitialized AudioRecord.

i am already initialized the audiostreamer

B4X:

Sub Service_Create

   audioStream.Initialize2(1, "AudioStream", 8000, True, 16, audioStream.VOLUME_MUSIC)

End sub

i have tried to add premission to the manifest editor but with no luck what could be the problem ?

Erel · Mar 30, 2018

Please post the full error message from the logs.

Addo · Mar 30, 2018

hello @Erel here is the full error

B4X:

service_sendaudio (java line: 682)
java.lang.IllegalStateException: startRecording() called on an uninitialized AudioRecord.
    at android.media.AudioRecord.startRecording(AudioRecord.java:895)
    at anywheresoftware.b4a.audio.AudioStreamer.StartRecording(AudioStreamer.java:98)
    at app.test.recorder.service._sendaudio(service.java:682)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:186)
    at anywheresoftware.b4a.keywords.Common.CallSub4(Common.java:1058)
    at anywheresoftware.b4a.keywords.Common.CallSubNew(Common.java:1005)
    at app.test.recorder.main2._button1_click(main2.java:1117)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:186)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:170)
    at anywheresoftware.b4a.BA.raiseEvent(BA.java:166)
    at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:80)
    at android.view.View.performClick(View.java:5264)
    at android.view.View$PerformClick.run(View.java:21297)
    at android.os.Handler.handleCallback(Handler.java:743)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:150)
    at android.app.ActivityThread.main(ActivityThread.java:5621)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:794)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:684)
main2_button1_click (java line: 1117)
java.lang.RuntimeException: java.lang.IllegalStateException: startRecording() called on an uninitialized AudioRecord.
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:223)
    at anywheresoftware.b4a.keywords.Common.CallSub4(Common.java:1058)
    at anywheresoftware.b4a.keywords.Common.CallSubNew(Common.java:1005)
    at app.test.recorder.main2._button1_click(main2.java:1117)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:186)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:170)
    at anywheresoftware.b4a.BA.raiseEvent(BA.java:166)
    at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:80)
    at android.view.View.performClick(View.java:5264)
    at android.view.View$PerformClick.run(View.java:21297)
    at android.os.Handler.handleCallback(Handler.java:743)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:150)
    at android.app.ActivityThread.main(ActivityThread.java:5621)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:794)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:684)
Caused by: java.lang.IllegalStateException: startRecording() called on an uninitialized AudioRecord.
    at android.media.AudioRecord.startRecording(AudioRecord.java:895)
    at anywheresoftware.b4a.audio.AudioStreamer.StartRecording(AudioStreamer.java:98)
    at app.test.recorder.service._sendaudio(service.java:682)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:186)
    ... 17 more
java.lang.RuntimeException: java.lang.IllegalStateException: startRecording() called on an uninitialized AudioRecord.

Addo · Mar 30, 2018

@Erel i have searched on forum and see similar problems as you suggested to other thread to use runtimepremission i have solve it following this tutorial

https://www.b4x.com/android/forum/threads/runtime-permissions-android-6-0-permissions.67689/#content

but what is the different if i add the permission in the manifest ? why i have to call the recording permission manually not while installation process

Erel · Mar 31, 2018

The 'record audio' permission is considered a dangerous permission. As explained in the tutorial you must explicitly request the user permission for this.

Addo · Mar 31, 2018

Thank you very much all good now

Android Question b4a audio record premission exception

Addo

Well-Known Member

Erel

B4X founder

Addo

Well-Known Member

Addo

Well-Known Member

Erel

B4X founder

Addo

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Android Question b4a audio record premission exception

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