Question

我有一个textview，我动态地突出显示它（首先突出显示110个字母然后在1秒后突出显示下一个110个字母，依此类推......）。下面是我的代码。

我刚刚创建了后台线程作为计时器，但它根本没有停止。如何在3次迭代后停止计时器？提前谢谢......

          int x=0;,y=110//global values
        Timer timer = new Timer();

    //Create a task which the timer will execute.  This should be an implementation of the TimerTask interface.
    //I have created an inner class below which fits the bill.
    MyTimer mt = new MyTimer();
   //We schedule the timer task to run after 1000 ms and continue to run every 1000 ms.
    timer.schedule(mt, 1000, 1000);
 class MyTimer extends TimerTask {
    public void run() {
        //This runs in a background thread.
        //We cannot call the UI from this thread, so we must call the main UI thread and pass a runnable
        if(x==330)
            Thread.currentThread().destroy();
        runOnUiThread(new Runnable() {

            public void run() {
                Spannable WordtoSpan = new SpannableString(names[0]);
                WordtoSpan.setSpan(new ForegroundColorSpan(Color.BLUE), x, y, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                x=x+110;
                y=y+110;
                textView.setText(WordtoSpan);
            }
        });
    }


}

Answer 1

您是否尝试使用Handler而不是计时器任务？

  private static int TIME_OUT = 3000;

// --------------

new Handler().postDelayed(new Runnable() {

                        @Override
                        public void run() {

                            // do your task here 
                        }
                    }, TIME_OUT);

使用Timer

有一些缺点

它只创建单个线程来执行任务，如果任务运行时间太长，其他任务就会受到影响。它不处理由任务抛出的异常，并且线程只是终止，这会影响其他计划任务，并且它们永远不会运行

如何在3秒后停止我的计时器？

1 个答案: