java - postDelayed 处理程序不会停止

Question

我需要的是当 competition.isTimerStarted 变成 false 这个 runnable 应该启动 buttonsProcedure() 一次然后自己停止但这并没有发生 - buttonsProcedure() 被永远调用并且 runnable 不会停止。

 timerRun=new Runnable()
            {
                 @Override
                 public void run() {

                     timerTVmainmenue.setText(competition.getTimerTime());
                     if (!competition.isTimerStarted) {thandler.removeCallbacks(timerRun);Log.d("MyLog","timerrun is blame for infinite butproc");buttonsProcedure();}
                thandler.postDelayed(timerRun, 243); //looping this for every 243 ms
                 }
            };

如何正确停止它？

Answer 1

        timerRun=new Runnable()
        {
             @Override
             public void run() {

                 timerTVmainmenue.setText(competition.getTimerTime());
                 if (!competition.isTimerStarted){
                thandler.removeCallbacks(this);
                Log.d("MyLog","timerrun is blame for infinite butproc");
                 buttonsProcedure();
                 return;
             }
            thandler.postDelayed(this, 243); //looping this for every 243 ms
             }
        };

你必须在 if 条件中添加 return 或使用 if-else 结构