android 播放音乐 

private MediaPlayer mMediaPlayer;  //定义

 

public void playTone() {

//mMediaPlayer.create(getApplicationContext(), uri)

mMediaPlayer.stop();

mMediaPlayer.reset();

mMediaPlayer.release();

mMediaPlayer = null;

Uri playUri = Uri.parse("/sdcard/music/"+list.get(focusedIndex).cType+".mp3");

try {

mMediaPlayer = MediaPlayer.create(CheckItemsActivity.this, playUri);

} catch (IllegalArgumentException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (SecurityException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IllegalStateException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

mMediaPlayer.start();

}