Question

当我尝试使用setText方法在textView上显示计时器时，它正在运行。但这里的计时器（文本）没有得到任何更新，卡上只显示“0,0,0,0”。我正在使用cardslib库来显示卡片。我不知道是否可以在卡片上显示计时器。任何人都可以帮助我克服这个问题吗？

*这是我的代码：

long day, hour, min, sec;
MyCard card;

        ArrayList<Card> cards = new ArrayList<Card>();
        card = new MyCard(getActivity());
        card.mainHeader= "Main Header";
        card.mainTitle = "Main Title";

    new CountDownTimer(86500000, 1000) { // adjust the milli seconds here

        public void onTick(long millisUntilFinished) {

        card.secondaryTitle = day + " day, " + hour + " hour, " + min + " minute, " + sec + " second";
            day = TimeUnit.MILLISECONDS.toDays(millisUntilFinished);
            hour = TimeUnit.MILLISECONDS.toHours(millisUntilFinished) - TimeUnit.DAYS.toHours(TimeUnit.MILLISECONDS.toDays(millisUntilFinished));
            min = TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millisUntilFinished));
            sec = TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished));

        }
        public void onFinish() {card.secondaryTitle = ("done!");}
    }.start();

        card.resourceIdThumb = R.drawable.ic_school_black_48dp;

        CardHeader header = new CardHeader(getActivity());
        header.setTitle(card.mainHeader);
        //Add Header to card
        card.addCardHeader(header);

        //Add the thumbnail
        CardThumbnail thumb = new CardThumbnail(getActivity());
        thumb.setDrawableResource(card.resourceIdThumb);
        card.addCardThumbnail(thumb);

        card.setOnClickListener(listener);

        cards.add(card);

抱歉，由于我的声誉，我无法上传图片。这是我卡片图片的链接：

http://tinypic.com/view.php?pic=a2vdx5&s=8#.VeShM_btmko

Answer 1

您可以创建一个每1秒更新一次的方法。您可以按照以下方式进行操作：

  Thread t = new Thread() {

  @Override
  public void run() {
    try {
      while (!isInterrupted()) {
        Thread.sleep(1000);
        runOnUiThread(new Runnable() {
          @Override
          public void run() {
            // SetText here
          }
        });
      }
    } catch (InterruptedException e) {
    }
  }
};

t.start();

修改

创建一个更新卡片的方法，如下所示：

public void UpdateCard(){
card.secondaryTitle = day + " day, " + hour + " hour, " + min + " minute, " + sec + " second";
day = TimeUnit.MILLISECONDS.toDays(millisUntilFinished);
hour = TimeUnit.MILLISECONDS.toHours(millisUntilFinished) - TimeUnit.DAYS.toHours(TimeUnit.MILLISECONDS.toDays(millisUntilFinished));
min = TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millisUntilFinished));
sec = TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished));
}

在run()内部调用此方法。

Answer 2

我通过在cardslib中使用setupInnerViewElements方法解决了我的问题。我把CountDownTimer类放到这个方法中并且它起作用了。这是我的java代码：

>>> import re
>>> s = "<tr><th>Current Data Usage:  </th><td>221.59GB</td></tr>"
>>> match = re.search(r"([\d\.]*)GB", s)
>>> match.group(1)
'221.59'

Answer 3

每次处理（我的意思是，向用户显示）必须在Java中的线程中完成（因此在Android上）。然后你需要使用RUNNABLE，不要使用TIMER TASKS（android上的计时器任务是有点错误的）。创建一个属性：

 private final Handler handler2 = new Handler();//As attribute e.g.

制作了一个runnable（作为属性）：

private Runnable runnable1 = new Runnable() {
    @Override
    public void run() {
         //made your edittext changes here
         handler1.postDelayed(this, 100);//1000=1second, 100=1sec/10
         //postDelayed =  it is to recall the runnable
    }
};

要启动此runnable，您必须在需要时调用它

handler1.postDelayed(runnable1, 100);

要停止此可运行，您必须在需要时调用它：

handler1.removeCallbacks(runnable1);

如何在Android中的卡片标题上显示倒数计时器？

3 个答案:

修改