实现自定义倒计时View

while (time > 0) {
      time--
     print("还剩"+ time + "秒")
   try {
      Thread.sleep(1000)
     } catch (e: InterruptedException) {
         e.printStackTrace()
    }
}

implements Runnable

private boolean isRun;
private int time=60;

public void start() {
        this.isRun = true;
        run();
    }
    
public void stop() {
        this.isRun = false;
    }

private void count() {
        time--;
        if (time == 0) {
            stop();
            this.setText("请重试");
            time=60;
        }
    }

@Override
   public void run() {
       count();
       if (isRun) {
           this.setText("还剩"+time+"秒");
           postDelayed(this, 1000);
       } else {
           removeCallbacks(this);
       }
   }