如何每秒重置System.currentTimeMillis（）？

Question

我想创建一个可以在2秒内设置变量的应用

 final Handler timerHandler = new Handler();
                Runnable timerRunnable = new Runnable() {
                    @Override
                    public void run() {
                        long millis = System.currentTimeMillis() - startTime;
                        int seconds = (int) (millis / 1000);
                        int decis = (int) ((millis % 1000)/10);

                        TimerBox.setText(String.format("Time: %d.%02d", seconds, decis));
                        Tx.setText(""+counting);
                        timerHandler.postDelayed(this, 10);
                        if(seconds == 2){
                            counting = 1;
                            seconds = 0;
                            decis = 0;
                        }
                    }
                };

这不是我的代码，在android studio中是非常新的

Answer 1

    new Thread(new Runnable()
    {
        @Override
        public void run()
        {
            while(true)
            {
                time = System.currentTimeMillis();
                if(time>=2000)
                {
                    time=0;
                    //do things here
                }
            }
        }
    }).start();

通过这种方式，您可以知道何时通过两秒