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 (mediaPlayer == null) {
mediaPlayer = new MediaPlayer();
}
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
try {
mediaPlayer.setDataSource(url);
mediaPlayer.prepareAsync();
} catch (IllegalArgumentException e) {
Toast.makeText(
MyStreamActivity.this,
getResources().getString(R.string.erreurIllegalArgument),
Toast.LENGTH_LONG).show();
e.printStackTrace();
} catch (IllegalStateException e) {
Toast.makeText(
MyStreamActivity.this,
getResources().getString(R.string.erreurIllegalState),
Toast.LENGTH_LONG).show();
e.printStackTrace();
} catch (IOException e) {
Toast.makeText(
MyStreamActivity.this,
getResources().getString(R.string.erreurIO),
Toast.LENGTH_LONG).show();
e.printStackTrace();
}
}
And (just for the record), the onDetroy()
where I do the cleaning :
private void releaseMediaPlayer() {
if (mediaPlayer != null) {
if(mediaPlayer.isPlaying()) {
mediaPlayer.stop();
}
mediaPlayer.release();
mediaPlayer = null;
}
}
@Override
protected void onDestroy() {
super.onDestroy();
releaseMediaPlayer();
}
mediaPlayer. start(); mediaPlayer. pause(); On call to start() method, the music will start playing from the beginning.
Once in the Stopped state, playback cannot be started until prepare() or prepareAsync() are called to set the MediaPlayer object to the Prepared state again.
You can't destroy one activity from another activity. But you can pause the media player by creating a new instance of MediaPlayer in the second activity and callind the 'stop' method !
The Media Player requires a SurfaceHolder object for displaying video content, assigned using the setDisplay() method. The Surface View is a wrapper around the Surface Holder object. Note that we must implement the SurfaceHoler. Callback interface.
Turned out, I forgot to mention the "@Override" on top of my inner method. Like this :
mediaPlayer.setOnPreparedListener(new OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
ToggleButton playButton = (ToggleButton) findViewById(R.id.playToggleButton);
playButton.setClickable(true);
mp.start();
}
});
Now everything works fine. Well... almost, since it takes forever to buffer...
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.
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