Troubleshooting guide

54
BlackBerry Java Development Environment Development Guide
Play media
Listen for media player events
Task Steps
Prepare the media player. 1. Invoke Player.realize().
2. Invoke Player.prefetch().
Start the media player. >Invoke Player.start(). The Player returns to the Prefetched state when you invoke
Player.stop() or when it reaches the end of the media file.
try {
Player p = Manager.createPlayer("http://www.test.rim.net/abc.wav");
p.start();
} catch (MediaException pe) {
} catch (IOException ioe) {
}
Determine the controls that a
media player supports.
1. Invoke Player.getControls().
2. To provide additional functionality for a media player, use one or more of the controls that the media
player supports.
You can use the same object to access multiple controls: for example, one object can be both a
VolumeControl and a ToneControl. The
javax.microedition.media package contains a number of
Control interfaces. See the
API Reference in the BlackBerry® Java Development Environment for more
information about the
javax.microedition.media package.
Adjust the volume of the
media player.
1. Invoke VolumeControl().
2. Define a volume value in the following range:
• 0: no volume
• 100: maximum volume level
The PlayerListener sends a VOLUME_CHANGED event when its state changes.
Close the media player. >Invoke Player.stop().
Task Steps
Listen for changes to the
media player state.
1. Implement PlayerListener.
2. To register the player listener, invoke addPlayerListener.
private void doPlay()
throws IOException, MediaException
{Player p = Manager.createPlayer("http://www.rim.com/rim.mp3");
p.addPlayerListener(this);
p.realize();
p.prefetch();
p.start();
}