CODEWITHSUNDEEP
androidandroid-mediaplayerwav
Raneez Ahmed
Raneez Ahmed

Reputation: 3828

MediaPlayer onCompletion is not being called accurately

In my app i have created an audio player (only WAV files) using MediaPlayer API. But the player doesn't give callback to onCompletion Listener everytime. Sometimes it gives callback but not everytime. I am doing some audio processing on wav file , like insertion and overwriting.

Is it because any missing in audio header? Why it doesn't give callback when the playback is completed?

Upvotes: 8

Views: 9587

Answers (7)

Abhilasha
Abhilasha

Reputation: 51

Return true to OnErrorListner method on MediaPlayer

@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
    //Invoked when there has been an error during an asynchronous operation
    switch (what) {
        case MediaPlayer.MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK:
            Log.e("MediaPlayer Error", "MEDIA ERROR NOT VALID FOR PROGRESSIVE PLAYBACK " + extra);
            break;
        case MediaPlayer.MEDIA_ERROR_SERVER_DIED:
            Log.e("MediaPlayer Error", "MEDIA ERROR SERVER DIED " + extra);
            break;
        case MediaPlayer.MEDIA_ERROR_UNKNOWN:
            Log.e("MediaPlayer Error", "MEDIA ERROR UNKNOWN " + extra);
            break;
    }
    return true;
}

Upvotes: 0

DàChún
DàChún

Reputation: 5146

Make sure the MediaPlayer is not a local(temporal) variable. Since the local variable will be collected by GC. In that case, the onCompletion will have no chance to be invoked.

Upvotes: 3

Hack06
Hack06

Reputation: 1062

In order to get the onCompletion() function called you should disable looping with a call mediaPlayer.setLooping(false);

Upvotes: 2

bernardo.g
bernardo.g

Reputation: 748

It seems you have to call setOnCompletionListener AFTER calling start(). Take a look here: https://stackoverflow.com/a/19555480/1860130

Worked for me.

Upvotes: 3

Sreedev
Sreedev

Reputation: 6653

Make sure that the headers of file is set correctly. If somethings in header is missing callback to the onCompletion may not occur.

If mediaplayer is playing a .wav file, seeking may happen correctly but a jerking will be there . So when the playingback completes there will be a differecnce of 0-1000 ms between total duration of file and onCompletion respectively. So if such a situation comes you should guess that as onColmpletion and do what you wanted. Thats a bit tricky way to get the onCompletion.

I faced the same problem while playing a .wav file with the mediaplayer. This is not a good way to solve this issue, but I tackled the same problem like this when i was having the same situation. Hope this will help you too in some ways.

Upvotes: 6

Zen
Zen

Reputation: 2728

Try to use a sleep method once recording is completed. Also use; .prepare() before the placeback occurs , to avoid crashes.

Upvotes: -3

Rahul
Rahul

Reputation: 47

You're using the correct Method but have you passed any code in the "// do some tasks here when playback completes " AREA.

If not then the callback wont make any sense. 

mMediaPlayer.setOnCompletionListener(new OnCompletionListener() {

   public void onCompletion(MediaPlayer mp) {

        Toast.makeText(getApplicationContext(),"Playback Completes", Toast.LENGTH_SHORT).show();
    }
});

This method will pop a Toast on completion of playback.

Upvotes: 0

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