Android MediaPlayer edit

Asynchronous prepare

The MediaPlayer$prepare() is a blocking call and will freeze the UI till execution completes. To solve this problem, MediaPlayer$prepareAsync() can be used.

mMediaPlayer = ... // Initialize it here
mMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener(){
    @Override
    public void onPrepared(MediaPlayer player) {
        // Called when the MediaPlayer is ready to play
        mMediaPlayer.start();
    }
}); // Set callback for when prepareAsync() finishes
mMediaPlayer.prepareAsync(); // Prepare asynchronously to not block the Main Thread

On synchronous operations, errors would normally be signaled with an exception or an error code, but whenever you use asynchronous resources, you should make sure your application is notified of errors appropriately. For MediaPlayer,

mMediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener(){
        @Override
        public boolean onError(MediaPlayer mp, int what, int extra) {
            // ... react appropriately ...
            // The MediaPlayer has moved to the Error state, must be reset!
            // Then return true if the error has been handled
        }
});

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