Question

我正在尝试使用多个倒数计时器在主要活动上打勾。计时器将具有一个对象字符串，将在列表视图中显示。问题是计时器没有滴答，它保持静止。

这是我的主要活动部分

 final ListView list = (ListView) findViewById(R.id.listView2);
        final ArrayAdapter ListAdapter = new ArrayAdapter<>(this,android.R.layout.simple_list_item_1,BountyList);
        list.setAdapter(ListAdapter);
        Runnable r = new Runnable() {
            @Override
            public void run() {
                BountyList.get(0).getTime().start();
                ListAdapter.notifyDataSetChanged();
            }
        };

r.run();

这是处理我的字符串并保留我的计时器对象的对象类。

public class Bounty {
String BountyName;
String URL;
String timelapse;
int BountyAmount;
long exHour, exMin, exSec;
CountDownTimer time;
//ArrayAdapter a;

public Bounty(String name, String url,int Amount,long hour, long min, long sec){//maybe add Adapter as local to handle it here?
    BountyName = name;
    BountyAmount = Amount;
    exHour = hour *60*60*1000;
    exMin = min *60* 1000;
    exSec = sec *1000;
    URL = url;
    final long test = (exHour+exMin+exSec) ;
    //a = adapter;
    //adapter.notifyDataSetChanged();
    time = new CountDownTimer(test,1000) {
        @Override
        public void onTick(long millisUntilFinished) {
            //long test2 = -1;
            //if(test2 == -1){
            //    test2 = test;
            //}
            //test2 = test2 - 1000;
            timelapse = toHourFormat(millisUntilFinished);
        }

        @Override
        public void onFinish() {

        }
    }.start();// not ticking so wont show toString
}
public String toString(){
    if(timelapse==null){
        timelapse = "Issue Here";
    }
    return BountyName+" | "+ BountyAmount+" | " + timelapse;
}
public String toHourFormat(long milli){
    int second = (int) (milli / 1000) % 60 ;
    int minutes = (int) ((milli / (1000*60)) % 60);
    int hours = (int) ((milli / (1000*60*60)) % 24);
    return hours+":"+minutes+":"+second;
}
public CountDownTimer getTime(){
    return time;
}

Answer 1

是否可以执行以下runnable（在您的给定代码中）？

Runnable r = new Runnable() {
    @Override
    public void run() {
        BountyList.get(0).getTime().start();
        ListAdapter.notifyDataSetChanged();
    }
};

Answer 2

countdowntimer必须在一个活动类中执行才能运行。这可以通过扩展类似的类来完成，

public class timeractivity extends Activity{
        //run timer here
    }

列表视图中的多个倒数计时器

2 个答案: