取消暂停/等待postdelayed处理程序/ runnable并仍然激活暂停的代码

时间:2011-06-11 21:18:46

标签: java android handler countdown postdelayed

设置:我有一个4阶段活动,我使用一个postdelayed处理程序暂停两个嵌套的后延迟。

时间轴:

stage1 | CODE FIRES | stage2 | CODE FIRES | stage3 | CODE FIRES | STAGE4

stage1:停用,只显示自定义alertdialog

阶段2:停用(主要)用户的视觉效果,包括倒计时器

阶段3:使用第二个倒数计时器停用

阶段4:用户互动,无倒计时或额外暂停

我希望用户能够在按下按钮时跳到stage2的末尾,这将取消倒数计时器和后延时(不取消它等待启动的代码)

我试图单独取消这两个但是没有成功,这是我用过的命令。

    countdowntimer.cancel();  // this didn't work from the button or a void call
    handler.removeCallbacks(runnable); // want to skip to end of stage2

我看到了一些try / catch的引用,或者在搜索中使用了一个线程但不确定如何使用或者是否合适。

感谢您的任何意见。

**编辑非工作代码参考: * 我削减了大部分不相关的东西,不确定我是否杀了任何}或者;额外

    public class Main extends Activity {

public Boolean onOffCDT = true;
public Handler handler2Mem;
public Runnable mem2Runnable = null;
public CountDownTimer aCounter;
@Override 
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    aCounter = null;        
    final Handler handlerMem = new Handler(); 
    final Runnable memRunnable = new Runnable() {

        public void run() { 
        //code
              final CountDownTimer aCounter = new CountDownTimer(memTime, 100) {

                 public void onTick(long millisUntilFinished) {
                     //update time
                     if(onOffCDT.equals(false)) {
                         onOffCDT = true;
    //                   aCounter.cancel();
                     }   
                 }

                 public void onFinish() {
                     title.setText(tempTitle);
                 }
        };
             aCounter.start();            


    Handler handler2Mem = new Handler(); 
    Runnable mem2Runnable = new Runnable() {
        public void run() {
             //code
             CountDownTimer bCounter = new CountDownTimer(8000, 100) {

                 public void onTick(long millisUntilFinished) {
             //update time
                 }

                 public void onFinish() {
                     title.setText(tempTitle);
                 }
              };
             bCounter.start(); 
             stage3(8000);   //another delay            
        };
    };  handler2Mem.postDelayed(mem2Runnable, memTime);


    }    

}; handlerMem.postDelayed(memRunnable, 2500);

    submit.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            //  this button checks stage#, if stage4 info - else...       
          }else{
          aCounter.cancel();
              onOffCDT = false;
              cancelCountDown(mem2Runnable, handler2Mem);
          }
        }

    });

    }

private void stage3 (Integer tTime) {
    Handler handler = new Handler(); 
            handler.postDelayed(new Runnable() { 
            public void run() { 
              //Do Stuff 

         } 
    }, tTime); 
}

public void cancelCountDown(Runnable run2, Handler hand2) {

      hand2.removeCallbacks(run2);

}

1 个答案:

答案 0 :(得分:0)

只需在方法中添加if ((boolean)canceled)return,并在取消

时将其设置为true