问Android Studio，Thread一遍又一遍地重启

EN

public class MyActivity extends Activity {

    private Timer mMyTimer;

    @Override
    protected void onResume() {
        super.onResume();

        mMyTimer = new Timer();
        // 0L means "start right now".
        // 1000L is the period between executions in ms.
        mMyTimer.scheduleAtFixedRate(new TimerTask() {
            @Override
            public void run() {
                // It's a background thread, so
                // don't update the UI directly from here.
                doStuff();
            }
        }, 0L, 1000L);
    }

    Override
    protected void onPause() {
        super.onPause();

        mMyTimer.cancel();
        mMyTimer = null;
    }
}