Android 使用Andengine的倒计时日期/天数

我正在寻找一个倒计时教程使用安引擎。这是我需要做的应用ie我需要计数到特定日期，当它到达该日期时，它必须显示一些消息，当该日期过去时，它必须再次显示倒计时到明年的日期。如何实现这一点。我搜索了各种教程，但无法找到找到答案。希望有人能帮我

更新： clocktext=新文本CAMERA_WIDTH/4.4f，CAMERA_HEIGHT/3.6f，this.mFont，Hello and Engine！，this.getVertexBufferObjectManager

      Calendar thatDay = Calendar.getInstance();
      thatDay.set(Calendar.DAY_OF_MONTH,30);
      thatDay.set(Calendar.MONTH,9); // 0-11 so 1 less
      thatDay.set(Calendar.YEAR, 2014);

      Calendar today = Calendar.getInstance();

      //long diff = today.getTimeInMillis() - thatDay.getTimeInMillis(); //result in millis
      long diff = thatDay.getTimeInMillis()-today.getTimeInMillis(); //result in millis
      long days = diff / (24 * 60 * 60 * 1000);

    this.remain = days;
        if(remain<0){

      clocktext = new Text(CAMERA_WIDTH/9.8f, CAMERA_HEIGHT/1.4f,this.mFont, remain + "", this.getVertexBufferObjectManager());
      }if(remain==0){
          clocktext = new Text(CAMERA_WIDTH/9.8f, CAMERA_HEIGHT/1.4f,this.mFont, "HAPPY HALLOWEEN", this.getVertexBufferObjectManager());
      }if(remain>0){
          clocktext = new Text(CAMERA_WIDTH/9.8f, CAMERA_HEIGHT/1.4f,this.mFont, remain + "", this.getVertexBufferObjectManager());
      }

下面是代码剪贴：

package de.goddchen.android.andthrow.library;

import org.anddev.andengine.engine.handler.IUpdateHandler;

public class CountDownTimer implements IUpdateHandler {

    private float timerSeconds;

    private float timerInterval;

    private float lastCall;

    private boolean isRunning;

    private float timeElapsed;

    private iCountDownListener listener;

    public interface iCountDownListener {
        public void onIntervalElapsed(float timeRemaining, CountDownTimer timer);

        public void onCountDownEnded(CountDownTimer timer);
    }

    public CountDownTimer(float timerSeconds, float timerInterval,
            iCountDownListener listener) {
        this.timerInterval = timerInterval;
        this.timerSeconds = timerSeconds;
        this.listener = listener;
        this.isRunning = true;
    }

    @Override
    public void onUpdate(float pSecondsElapsed) {
        timeElapsed += pSecondsElapsed;
        // Log.d(getClass().getSimpleName(), "elapsed: " + timeElapsed);
        if (isRunning) {
            if (timeElapsed - lastCall > timerInterval) {
                listener.onIntervalElapsed(timerSeconds - timeElapsed, this);
                lastCall = timeElapsed;
            }
            if (timeElapsed > timerSeconds) {
                listener.onCountDownEnded(this);
                cancel();
            }
        }
    }

    @Override
    public void reset() {

    }

    public void cancel() {
        isRunning = false;
    }

}

---

另一种选择是：在andengine中，你也可以实现简单的java或android倒计时，或者更确切地说，你也可以使用色度计。@mtetno谢谢你的回答。如何设置准确的日期，比如从日历开始的30/10/年和从当前日期开始的30/10/年，我希望得到差异，即天数。到达该日期时，我希望显示一条消息，当日期过去时，我希望计数器开始显示到明年的剩余天数。@mtetno更新的代码我试过了。你只想要日期差异而不是时间差异，对吗？@mtetno是的。日期差异