I got confused about a curious problem. My application allows the user to record a voice message that will be saved as an .amr file.
String fileName = getFilesDir().getAbsolutePath() + "/voiceMessage.amr";
MediaRecorder mediaRecorder = new MediaRecorder();
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.AMR_WB);
mediaRecorder.setOutputFile(fileName);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_WB);
After recording, the user can play back the recorded message, which works as expected:
MediaPlayer mediaPlayer = new MediaPlayer();
try {
fileName = getFilesDir().getAbsolutePath() + "/voiceMessage.amr";
Log.i(TAG, fileName);
mediaPlayer.setDataSource(fileName);
mediaPlayer.prepare();
mediaPlayer.start();
} catch (IOException e) {
}
Logcat prints /data/data/com.messages.android/files/voiceMessage.amrfor fileName, which is good. After saving the voice message, I upload it to my server and upload it later for each user. The downloaded file is saved in the intermediate storage.
Now the part that throws the exception:
MediaPlayer mediaPlayer = new MediaPlayer();
File voiceMessage = user.getVoiceMessageFile(context);
if (voiceMessage.exists()) {
try {
Log.i(TAG, voiceMessage.getAbsolutePath());
mediaPlayer.setDataSource(voiceMessage.getAbsolutePath());
mediaPlayer.prepare();
mediaPlayer.start();
} catch (IOException e) {
}
}
Logcat /data/data/com.messages.android/files/c02bfe404359860eb582aff318afb1f41469514396529.amr voiceMessage.getAbsolutePath(), . , . . .
- mediaPlayer.prepare():
> java.io.IOException: Prepare failed.: status=0x1 at
> android.media.MediaPlayer._prepare(Native Method) at
> android.media.MediaPlayer.prepare(MediaPlayer.java:1168) at
> com.messages.android.views.SeekBarLinearLayoutView.onClick(SeekBarLinearLayoutView.java:172)
> at android.view.View.performClick(View.java:4766) at
> android.view.View$PerformClick.run(View.java:19683) at
> android.os.Handler.handleCallback(Handler.java:739) at
> android.os.Handler.dispatchMessage(Handler.java:95) at
> android.os.Looper.loop(Looper.java:135) at
> android.app.ActivityThread.main(ActivityThread.java:5538) at
> java.lang.reflect.Method.invoke(Native Method) at
> java.lang.reflect.Method.invoke(Method.java:372) at
> com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:960)
> at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
Huawei ALE-L21. Samsung Huawei .
: , .
1.
FileInputStream fi = new FileInputStream(voiceMessage);
mediaPlayer.setDataSource(fi.getFD());
2.
voiceMessage.setReadable(true, false);
mediaPlayer.setDataSource(voiceMessage.getAbsolutePath());
3:
- : , , . , , . , OutputFormat , ? OutputFormat, Android 4.1+ ?