Android手机注册登录时获取验证码之后倒计时功能(知识点总结)

private TimerTask timerTask;  private Timer timer;  private int time = 5000;//五秒  private int timess;/**   * 开始倒计时   */  private void startTimer() {    timess = time/1000;    tvTime.setText(timess+"S");    if(timerTask==null){      TimerTask timerTask = new TimerTask() {        @Override        public void run() {          runOnUiThread(new Runnable() {            @Override            public void run() {              timess--;              tvTime.setText(timess+"S");              btnSkipActivity();              if(timess<=0){                stopTimer();                return;              }            }          });        }      };    }    if(timer==null){      timer = new Timer();    }    timer.schedule(timerTask, 1000, 1000);  }/**   * 时间一到 ，停止倒计时   */  private void stopTimer(){    if(timer!=null){      timer.cancel();      timer=null;    }    if(timerTask!=null){      timerTask.cancel();      timerTask=null;    }  }