在Android应用中，有时候为了用户体验更佳，我们会为默写情况添加声音效果，比如点击按钮后发出声音，以下代码可以轻松实现声音效果：
new Thread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
MediaPlayer mPlayer = MediaPlayer.create(
getApplicationContext(), R.raw.switch_sound);
mPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
mp.release();
}
});
try {
mPlayer.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mPlayer.start();
}
}).start();
}