Android Timer（计时器）

    public class MainActivity extends Activity {
    Timer timer = new Timer();

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        findViewById(R.id.button1).setOnClickListener(l);
    }

    OnClickListener l = new OnClickListener() {
        @Override
        public void onClick(View v) {
            // timer.schedule(task, 10000); 延迟十秒启动，执行一次
            // timer.schedule(task, 10000, 10000); 延迟十秒启动，十秒启动一次
        }
    };

    Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            Log.i("test", "time up...");
            timer.cancel();
        }

    };

    TimerTask task = new TimerTask() {
        public void run() {
            handler.sendEmptyMessage(1);
        }
    };
    }