AndroId MediaPlayer prepareAsync method

Question

I have a strange problem. I use the prepareAsync method with the `MediaPlayer`, but the listener that I declared just never gets fired. I try to stream a live `.mp3` feed from the Internet (radio station). I use an inline method for the listener, but I also tried implementing the interface without any success. Here's a portion of my code : In the member section : ``` String url = "http://<my_url>.mp3"; MediaPlayer mediaPlayer = new MediaPlayer(); ``` In Activity `onCreate()` : ``` ToggleButton playButton = (ToggleButton) findViewById(R.id.playToggleButton); playButton.setOnClickListener(this); playButton.clearFocus(); playButton.setClickable(false); mediaPlayer.setOnPreparedListener(new OnPreparedListener() { public void onPrepared(MediaPlayer mp) { ToggleButton playButton = (ToggleButton) findViewById(R.id.playToggleButton); playButton.setClickable(true); mp.start(); } }); preparePlayer(); ``` Then, here's the `preparePlayer()` method : ``` private void preparePlayer() { if (mediaPla…

Accepted Answer

You are setting the `OnPreparedListener` in your `Activity`'s create method and later on, possibly, creating a new `MediaPlayer` in your `preparePlayer()` method. Any newly created `MediaPlayer`'s wont have the `prepareListener` set. You should also add an `errorlistener` to find out whats going on.

You may want to move the `setOnPreparedListener` call inside the

```
  if (mediaPlayer == null) {
    mediaPlayer = new MediaPlayer();
}
```

as well as setting a `setOnErrorListener` like so:

```
if (mediaPlayer == null) {
    mediaPlayer = new MediaPlayer();
    mediaPlayer.setOnErrorListener(....);
    mediaPlayer.setOnPreparedListener(new OnPreparedListener() {
        public void onPrepared(MediaPlayer mp) {
            ToggleButton playButton = (ToggleButton) findViewById(R.id.playToggleButton);
            playButton.setClickable(true);
            mp.start();
        }
    });
}
```

Please change `e.printStackTrace();` to

```
Log.e("tag", e.getMessage(), e);  
```

Hope this helps, let us know if you have any log data as this will also be useful.

AndroId MediaPlayer prepareAsync method

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