android - Android 停止記録の失敗

Question

音声録音を開始するサービスを開始します。停止しようとすると、次のメッセージが表示されます

06-27 17:21:30.138: E/MediaRecorder(6122): stop called in an invalid state: 0

Uploading data to server などの他の機能が結果に影響を与える可能性があるかどうかはわかりません（ Asyck Task には実装されておらず、メソッドのみを呼び出しています）

ランタイム例外をキャッチしないと、ハンドラー例外が表示されることがあります (Finishing Activity , stop recording )

06-27 17:32:35.988: W/System.err(6818): java.lang.IllegalStateException
06-27 17:32:35.988: W/System.err(6818):     at android.media.MediaRecorder.stop(Native Method)
06-27 17:32:35.988: W/System.err(6818):     at tvbpv.test.EOrderSystem1.RecordService.stopRecording(RecordService.java:109)
06-27 17:32:35.988: W/System.err(6818):     at tvbpv.test.EOrderSystem1.RecordService.onDestroy(RecordService.java:46)
06-27 17:32:35.988: W/System.err(6818):     at android.app.ActivityThread.handleStopService(ActivityThread.java:2401)
06-27 17:32:35.988: W/System.err(6818):     at android.app.ActivityThread.access$2000(ActivityThread.java:127)
06-27 17:32:35.988: W/System.err(6818):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1225)
06-27 17:32:35.988: W/System.err(6818):     at android.os.Handler.dispatchMessage(Handler.java:99)
06-27 17:32:35.988: W/System.err(6818):     at android.os.Looper.loop(Looper.java:137)
06-27 17:32:35.988: W/System.err(6818):     at android.app.ActivityThread.main(ActivityThread.java:4519)
06-27 17:32:35.988: W/System.err(6818):     at java.lang.reflect.Method.invokeNative(Native Method)
06-27 17:32:35.988: W/System.err(6818):     at java.lang.reflect.Method.invoke(Method.java:511)
06-27 17:32:35.988: W/System.err(6818):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:794)
06-27 17:32:35.988: W/System.err(6818):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:561)
06-27 17:32:35.988: W/System.err(6818):     at dalvik.system.NativeStart.main(Native Method)

録音開始

06-28 09:14:47.646: E/MediaRecorder(3089): start failed: -38
06-28 09:14:47.646: W/System.err(3089): java.lang.IllegalStateException
06-28 09:14:47.646: W/System.err(3089):     at android.media.MediaRecorder.start(Native Method)
06-28 09:14:47.646: W/System.err(3089):     at tvbpv.test.EOrderSystem1.RecordService.startRecording(RecordService.java:87)
06-28 09:14:47.646: W/System.err(3089):     at tvbpv.test.EOrderSystem1.RecordService.onStart(RecordService.java:49)
06-28 09:14:47.646: W/System.err(3089):     at android.app.Service.onStartCommand(Service.java:438)
06-28 09:14:47.646: W/System.err(3089):     at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2371)
06-28 09:14:47.646: W/System.err(3089):     at android.app.ActivityThread.access$1900(ActivityThread.java:127)
06-28 09:14:47.646: W/System.err(3089):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1222)
06-28 09:14:47.646: W/System.err(3089):     at android.os.Handler.dispatchMessage(Handler.java:99)
06-28 09:14:47.646: W/System.err(3089):     at android.os.Looper.loop(Looper.java:137)
06-28 09:14:47.646: W/System.err(3089):     at android.app.ActivityThread.main(ActivityThread.java:4519)
06-28 09:14:47.646: W/System.err(3089):     at java.lang.reflect.Method.invokeNative(Native Method)
06-28 09:14:47.646: W/System.err(3089):     at java.lang.reflect.Method.invoke(Method.java:511)
06-28 09:14:47.646: W/System.err(3089):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:794)
06-28 09:14:47.646: W/System.err(3089):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:561)
06-28 09:14:47.646: W/System.err(3089):     at dalvik.system.NativeStart.main(Native Method)

以下は私のコードです

RecordService.java


private MediaRecorder recorder;
private File instanceRecord;
private boolean recording= false;
@Override
public IBinder onBind(Intent arg0) {
    // TODO Auto-generated method stub
    return null;
}



@Override
public void onStart(Intent intent, int startId) {
    startRecording();       
    super.onStart(intent, startId);
}



@Override
public void onDestroy() {
    stopRecording();
    super.onDestroy();
}

private void prepareRecording()
{
    try
    {
        recorder.prepare();
    }
    catch(IllegalStateException e)
    {
        e.printStackTrace();

    } 
    catch (IOException e) 
    {
        e.printStackTrace();
    }
}

public  void startRecording(){

    try {

    recorder = new MediaRecorder();
    recorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
    recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);

    Date today = Calendar.getInstance().getTime();    
    Format formatter = new SimpleDateFormat("yyyy-MM-dd_HH:mm:ss");
    String reportDate = formatter.format(today);


    File instanceRecordDirectory = new File(Environment.getExternalStorageDirectory() + File.separator + "TVB_PV_recordings");

    if(!instanceRecordDirectory.exists()){
        instanceRecordDirectory.mkdirs();
    }

    instanceRecord = new File(instanceRecordDirectory.getAbsolutePath() + File.separator + reportDate + "_sales_recording.mp4");
    if(!instanceRecord.exists()){
        instanceRecord.createNewFile();
    }

    recorder.setOutputFile(instanceRecord.getAbsolutePath());        
    prepareRecording();
    recorder.start();
    recording = true;

    } catch (IllegalStateException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }catch (Exception e){
        e.printStackTrace();
    }
}

public  void stopRecording() {
    if (recorder != null) {       
          try {
            recorder.stop();
          } catch(RuntimeException e) {
              instanceRecord.delete();  //you must delete the outputfile when the recorder stop failed.
          } finally {
            recorder.release();
            recorder = null;
          }
    }                   
}


Other Activity: 

        stopService(new Intent(EOrderSystemSubmit.this, RecordService.class));