android - 如何在我的应用标题中显示不断更新的时间

Question

我正在开发一个android应用程序，并且我正在使用phonegap。我也在使用jquery mobile。现在我想添加一个时钟或当前时间（更新/更改）显示在我的应用程序标题的左上角。

您能否建议我一种方法来实现这一目标或为此使用一些现有的库。我也可以编写代码，但尽量不要重新发明轮子。

Answer 1

如果准确性不是很重要，您可以使用处理程序和 postDelayed()。

    Handler handler = new Handler();

    void timer() {
        //Update UI with current time then post a new runnable to run after 1000ms

        handler.postDelayed(new Runnable() {
           @Override
           public void run() {
              timer();
           }
        }, 1000);
        return;
    }

Answer 2

public class Header extends LinearLayout {

private LayoutInflater inflater;
private Activity foot_activity;
protected TextView txtCurrentTime;

public Header(Context context) {
    super(context);
}

public Header(Context context, AttributeSet attrs) {
    super(context, attrs);
}

public Header(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
}

public void setActivity(Activity activity) {
    foot_activity = activity;
    inflateHeader();
}

private void inflateHeader() {
    inflater = (LayoutInflater) getContext().getSystemService(
            Context.LAYOUT_INFLATER_SERVICE);
    inflater.inflate(R.layout.foot, this);
    Runnable runnable = new CountDownRunner();
    Thread myThread = new Thread(runnable);
    myThread.start();
}

class CountDownRunner implements Runnable {
    public void run() {
        while (!Thread.currentThread().isInterrupted()) {
            try {
                doWork();
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
            }
        }
    }
}

public void doWork() {
    foot_activity.runOnUiThread(new Runnable() {
        public void run() {
            try {
                txtCurrentTime = (TextView) findViewById(R.id.lbltimes);
                Calendar c = Calendar.getInstance();
                SimpleDateFormat df = new SimpleDateFormat(
                        "dd-MM-yyyy HH:mm:ss a");
                String formattedDate = df.format(c.getTime());
                txtCurrentTime.setText(formattedDate);
                //System.out.println("TIME is : " + formattedDate);
            } catch (Exception e) {
            }
        }
    });
}

}

要在所需的活动中检索它，只需包含以下片段：

Header obj = (Header) findViewById(R.id.footer);
obj.setActivity(this);

礼貌：POOVIZHI RAJAN！！！