用广播的方式退出Android程序

/*
* 接收广播退出程序
*/
private void setFinish() {
LocalBroadcastManager manager =   LocalBroadcastManager.getInstance(this);
IntentFilter filter = new IntentFilter();
filter.addAction("exit");
BroadcastReceiver receiver = new BroadcastReceiver() {

public void onReceive(Context arg0, Intent arg1) {
finish();
System.exit(0);
}
};
manager.registerReceiver(receiver, filter);
}

Intent intent2 = new Intent("exit");
LocalBroadcastManager.getInstance(getApplicationContext())
.sendBroadcast(intent2);
finish();