Java.lang.RuntimeException: setAudioSource failed

Question

I am new to Android development. I'm just trying to record audio with an android studio test (2.1.1) with a 6.0.1 Marshmallow device.

public class MainActivity extends AppCompatActivity { Button start, stop; public MediaRecorder recorder = null; public String fileextn = ".mp4"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); start = (Button) findViewById(R.id.start_button); stop = (Button) findViewById(R.id.stop_button); start.setOnClickListener(new View.OnClickListener(){ @Override public void onClick(View v) { switch (v.getId()) { case R.id.start_button: startRecord(); case R.id.stop_button: stoprecord(); } } } ); } public void startRecord() { recorder = new MediaRecorder(); recorder.reset(); recorder.setAudioSource(MediaRecorder.AudioSource.MIC); recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4); recorder.setOutputFile(getFilePath()); try { recorder.prepare(); recorder.start(); } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } public void stoprecord() { if (recorder != null) { recorder.stop(); recorder.reset(); recorder.release(); recorder = null; } } private String getFilePath() { String filepath = Environment.getExternalStorageDirectory().getPath(); File file = new File(filepath, "MediaRecorderSample"); if (!file.exists()) file.mkdirs(); return (file.getAbsolutePath() + "/" + fileextn); } } 

By the way, I included use-permissions in the manifext.xml file.

This is what I get in Android Monitor:

  05-18 11:08:36.576 10414-10414/com.example.gk.audiocapture E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.gk.audiocapture, PID: 10414 java.lang.RuntimeException: stop failed. at android.media.MediaRecorder.stop(Native Method) at com.example.gk.audiocapture.MainActivity.stoprecord(MainActivity.java:65) at com.example.gk.audiocapture.MainActivity$1.onClick(MainActivity.java:35) at android.view.View.performClick(View.java:5207) at android.view.View$PerformClick.run(View.java:21168) at android.os.Handler.handleCallback(Handler.java:746) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5443) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 

I tried some answers, could not find.

MY AndroidManifest.xml:

  <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.gk.audiocapture"> <uses-permission android:name="android.permission.RECORD_AUDIO"></uses-permission> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> 

Answer 1

I had the same problem and managed to fix it by asking permission to record audio:

  if (ActivityCompat.checkSelfPermission(activity(), Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) { ActivityCompat.requestPermissions(activity(), new String[]{Manifest.permission.RECORD_AUDIO}, BuildDev.RECORD_AUDIO); } else { startRecording(); } 

Where

BuildDev.RECORD_AUDIO is a public static ending int RECORD_AUDIO = 0;

Answer 2

I'm confused, your title says java.lang.RuntimeException: setAudioSource failed , and your stack trace says java.lang.RuntimeException: stop failed.

For java.lang.RuntimeException: setAudioSource failed you may not need runtime permission.

You need to take Manifest.permission.RECORD_AUDIO from the user.

 public void onRecordBtnClicked() { if (ActivityCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) { ActivityCompat.requestPermissions(this, new String[] { Manifest.permission.RECORD_AUDIO }, 10); } else { recordAudio(); } } private void recordAudio() { //Record Audio. } @Override public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { super.onRequestPermissionsResult(requestCode, permissions, grantResults); if (requestCode == 10) { if (grantResults[0] == PackageManager.PERMISSION_GRANTED) { recordAudio(); }else{ //User denied Permission. } } } 

Answer 3

You miss break in case s:

 case R.id.start_button: startRecord(); // You need to put a 'break;' here, or you'll fall through to the next case case R.id.stop_button: stoprecord(); // For the last case of a switch it might not matter, but it'd still be a good idea to put a 'break;' here as well 

Answer 4

try this code

 @Override public void onClick(View v) { switch (v.getId()) { case R.id.record_btn: recordAudio(); break; case R.id.play_pause_btn: playAudio(); break; } } private void playAudio() { if (mPlaying) { record_btn.setEnabled(false); startPlaying(); play_pause_btn.setText("Stop Playing"); mPlaying = false; } else { stopPlaying(); play_pause_btn.setText("Start Playing"); mPlaying = true; record_btn.setEnabled(true); } } private void startPlaying() { mAudioPlayer = new MediaPlayer(); try { mAudioPlayer.setDataSource(mFilename); mAudioPlayer.prepare(); updatingPlyingProgressBar(); mAudioPlayer.start(); showProgressforPlaying(); } catch (IOException e) { e.printStackTrace(); } mAudioPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { playAudio(); } }); } private void updatingPlyingProgressBar() { long maxTime = mAudioPlayer.getDuration(); int second = (int) maxTime / 1000; playing_audio_progressBar.setMax(second * 1000); playing_audio_progressBar.setProgress(0); playing_audio_max_time.setText(second > 9 ? "00:" + second : "00:0" + second); } private void stopPlaying() { mAudioPlayer.stop(); mAudioPlayer.release(); mPlayingTimer.cancel(); mAudioPlayer = null; } private void showProgressforPlaying() { seconds = 0; mPlayingTimer = new Timer(); mPlayingTimer.schedule(new TimerTask() { @Override public void run() { if (!mPlaying) { runOnUiThread(new Runnable() { @Override public void run() { if (playing_audio_progressBar.getProgress() < mAudioPlayer.getDuration()) { playing_audio_progressBar.setProgress(playing_audio_progressBar.getProgress() + 1000); seconds++; playing_audio_time.setText(seconds > 9 ? "00:" + seconds : "00:0" + seconds); } else { playAudio(); } } }); } } }, 1000, 1000); } private void recordAudio() { if (mRecording) { play_pause_btn.setEnabled(false); mRecording = false; audio_recording_progressBar.setMax(MAXTIME); audio_recording_progressBar.setProgress(0); startRecording(); showProgressforRecording(); record_btn.setText("Stop"); } else { stopRecording(); record_btn.setText("Record"); mRecording = true; mRecordingtimer.cancel(); play_pause_btn.setEnabled(true); } } private void stopRecording() { mAudioRecorder.stop(); mAudioRecorder.release(); mAudioRecorder = null; } private void startRecording() { mAudioRecorder = new MediaRecorder(); mFilename = Environment.getExternalStorageDirectory().getAbsolutePath() + "/AudioRecordDemo/" + "Audio" + System.currentTimeMillis() + ".3gp"; mAudioRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); mAudioRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); mAudioRecorder.setOutputFile(mFilename); mAudioRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); try { mAudioRecorder.prepare(); } catch (IOException e) { e.printStackTrace(); } mAudioRecorder.start(); } private void showProgressforRecording() { seconds = 0; mRecordingtimer = new Timer(); mRecordingtimer.schedule(new TimerTask() { @Override public void run() { if (!mRecording) { runOnUiThread(new Runnable() { @Override public void run() { if (audio_recording_progressBar.getProgress() < MAXTIME) { audio_recording_progressBar.setProgress(audio_recording_progressBar.getProgress() + 1000); seconds++; recorded_audio_time.setText(seconds > 9 ? "00:" + seconds : "00:0" + seconds); } else { recordAudio(); } } }); } } }, 1000, 1000); } 

Answer 5

startRecording

  public void startRecording(View view) throws IOException { startButton.setEnabled(false); stopButton.setEnabled(true); //Creating file File dir = Environment.getExternalStorageDirectory(); try { audiofile = File.createTempFile("sound", ".3gp", dir); } catch (IOException e) { Log.e(TAG, "external storage access error"); return; } //Creating MediaRecorder and specifying audio source, output format, encoder & output format recorder = new MediaRecorder(); recorder.setAudioSource(MediaRecorder.AudioSource.MIC); recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); recorder.setOutputFile(audiofile.getAbsolutePath()); recorder.prepare(); recorder.start(); } 

stopRecording

  public void stopRecording(View view) { startButton.setEnabled(true); stopButton.setEnabled(false); //stopping recorder recorder.stop(); recorder.release(); //after stopping the recorder, create the sound file and add it to media library. addRecordingToMediaLibrary(); } 

Addtolib

  protected void addRecordingToMediaLibrary() { //creating content values of size 4 ContentValues values = new ContentValues(4); long current = System.currentTimeMillis(); values.put(MediaStore.Audio.Media.TITLE, "audio" + audiofile.getName()); values.put(MediaStore.Audio.Media.DATE_ADDED, (int) (current / 1000)); values.put(MediaStore.Audio.Media.MIME_TYPE, "audio/3gpp"); values.put(MediaStore.Audio.Media.DATA, audiofile.getAbsolutePath()); //creating content resolver and storing it in the external content uri ContentResolver contentResolver = getContentResolver(); Uri base = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI; Uri newUri = contentResolver.insert(base, values); //sending broadcast message to scan the media file so that it can be available sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, newUri)); Toast.makeText(this, "Added File " + newUri, Toast.LENGTH_LONG).show(); } 

Answer 6

Try it. Hope this helps you

 change recorder.setAudioSource(1); to recorder.setAudioSource(MediaRecorder.AudioSource.MIC); in your startRecord method.