MediaPlayer onCompletion is not being called accurately

Question

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?

Answer 1

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.

Answer 2

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

Worked for me.

Answer 3

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