Question

我使用ListView创建了我的订单卡。我使用处理程序为每张卡运行一个连续计时器，以检查花了多少时间。我在适配器中使用了代码。但我的问题是，当有多个订单时，定时器时间会重叠在每张卡上。例如，如果我有3张牌，那么ist卡将以1秒的间隔逐个显示1,2,3的时间，第2将显示2 n 3的时间，而第3个计时器则停止。另一个问题是如果时间在特定量之后计时器停止。请帮我解决这个问题。

这是我的自定义适配器代码：

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View vv = LayoutInflater.from(mContext).inflate(R.layout.adapter_listview_newpage_card,null,false);
    menuModels = new ArrayList<>();
    // menuModels.clear();

    order_time = (TextView) vv.findViewById(R.id.order_time);


    // This is my handler of timer:

    final Handler myHandler = new Handler(); //declare this line in class
    myHandler.postDelayed( // called this line from createlaytout function first time
            new Runnable() {
                public void run() {
                    TimeZone tz = TimeZone.getTimeZone("Asia/Kolkata");
                    // Log.e("TAG", "timezone "+tz );
                    Calendar cd = Calendar.getInstance(tz);
                    int min0 = cd.get(Calendar.MINUTE);
                    int sec0 = cd.get(Calendar.SECOND);
                    int hour0 = cd.get(Calendar.HOUR_OF_DAY);
                    // int ampm0 = cd.get(Calendar.AM_PM);
                    int total = (hour0 * 60 * 60) + (min0 * 60) + sec0;
                    int finalTime = total - Integer.parseInt(data.getTimer_time());
                    int hoursnew = 0;
                    int seconds = finalTime;
                    int minutes = seconds / 60;
                    seconds = seconds % 60;

                    if (minutes > 59) {
                        hoursnew = minutes / 60;
                        minutes = minutes % 60;
                    }

                    // Log.e("TAG", "timer" + minutes + "-" + seconds + "$$" + data.getOrder_id());
                    order_time.setText(" " + data.getOrder_id() + "&" + String.format("%02d", hoursnew) + ":" + String.format("%02d", minutes) + ":" + String.format("%02d", seconds));
                    myHandler.postDelayed(this, 1000);
                }

            }, 0);


    // Here order_time is textview where I add time.

}

更新了代码

嗨，我能够在我的代码中运行计时器，但问题是现在我在adapter.setnotifydata更改时有空指针异常。 我的适配器代码，我在textview上设置时间

        public class customadapetr_new extends BaseAdapter {

              public customadapetr_new(ArrayList<DataModel> dataModels,         Context context,  NewPageActivity objNewPageActivity) {
              this.dataSet=dataModels;
                this.mContext=context;
                 this.objNewPageActivity = objNewPageActivity;
           }


           private void setTime(final int order_time, final TextView tv) {

    TimeZone tz = TimeZone.getTimeZone("Asia/Kolkata");
    //  Log.e("TAG", "timezone "+tz );
    Calendar cd = Calendar.getInstance(tz);
    int min0 = cd.get(Calendar.MINUTE);
    int sec0 = cd.get(Calendar.SECOND);
    int hour0 = cd.get(Calendar.HOUR_OF_DAY);
    // int ampm0 = cd.get(Calendar.AM_PM);
    int total = (hour0 * 60 * 60) + (min0 * 60) + sec0;
    int finalTime = total - order_time;
    int hoursnew = 0;
    int seconds = finalTime;
    int minutes = seconds / 60;
    seconds = seconds % 60;


    if (minutes > 59) {
        hoursnew = minutes / 60;
        minutes = minutes % 60;

    }

    tv.setText(" " + String.format("%02d", hoursnew) + ":" + String.format("%02d", minutes));


}

}

我的代码来自我所谓的处理程序

       public class NewPageActivity extends Fragment{
       private final Runnable timerRunnable = new Runnable() {
         @Override
         public void run() {

        Log.e("TAG", "run:timer run run " );
        adapter.notifyDataSetChanged();
        timerHandler.postDelayed(this, 60000); //run every minute
      }
};

}

我在adapter.notifyDataSetChanged（）收到错误并附加错误的scrrenshot链接，即http://prntscr.com/dmxjr9

计时器在ListView中无法正常工作

0 个答案: