Android：倒数计时器，例如10:00 到 00:00？使用 OnclickListener 到 TextView？

我正在尝试制作一个从 10 分钟开始的倒计时器，类似于篮球记分牌：10:00 到 00:00。我该怎么做呢？这是我的代码：

private TextView Timer;  
Handler handler = new Handler();  
private int length = 120000;  
private int decision = 0;  
MyCount counter;  

public String formatTime(long millis) {  
    String output = "00:00";  
    long seconds = millis / 1000;  
    long minutes = seconds / 60;  

    seconds = seconds % 60;  
    minutes = minutes % 60;  

    String sec = String.valueOf(seconds);  
    String min = String.valueOf(minutes);  

    if (seconds < 10)  
        sec = "0" + seconds;  
    if (minutes < 10)  
        min= "0" + minutes;  

    output = min + " : " + sec;  
    return output;
}//formatTime  

@Override  
public void onCreate(Bundle cute) {  
    super.onCreate(cute);  
    counter = new MyCount(length, 1000);  
    updateTime();  
    handler.removeCallbacks(updateTimeTask);  
    handler.postDelayed(updateTimeTask, 1000);   
}//end of cuteness  

private Runnable updateTimeTask = new Runnable() {  
    public void run() {  
        updateTime();  
        handler.postDelayed(this, 1000);  
    }  
};  

private void updateTime() {  
    switch (decision) {  
        case 0:  
            startTime = 0L;  
            counter.start();  
            decision=1;  
            break;  
        case 1:  
            counter.onPause();  
            decision=0;  
            break;  
    }  
}//updateTime  

class MyCount extends CountDownTimer {  
    public MyCount(long millisInFuture, long countDownInterval) {  
        super(millisInFuture, countDownInterval);  
    }//MyCount  

    public void onPause() {  
        //do stuff later  
        onPause();  
    }//finish  

    public void onTick(long millisUntilFinished) {             
        Timer.setText("" + formatTime(millisUntilFinished));           
    }//on tick  

    @Override  
    public void onFinish() {  
        onStop();  

    }//finish  
}//class MyCount  

任何帮助，将不胜感激。谢谢！

这并不一定太难。您已经创建了用字母书写时间的功能，现在您需要倒计时。启动计时器很容易，只需在开始按钮事件处理程序（或您选择使用的任何内容）中执行此操作（修改后的示例来自Android 开发者参考 http://developer.android.com/reference/android/os/CountDownTimer.html:

// New timer for 10 minutes, starts after initialization
new MyCount(600000, 1000) 
{
    // Updates the text on your "scoreboard" every second
    public void onTick(long millisUntilFinished) 
    {
        Timer.setText("Time remaining: " + formatTime(millisUntilFinished));
    }

    public void onFinish() 
    {
        mTextField.setText("done!");
    }
}.start();

这就是您所需要的！您可以跳过您的UpdateTime功能和你的updateTimeTask。只需将所有这些替换为您的onCreate method

counter = new MyCount(length, 1000);  
updateTime();  
handler.removeCallbacks(updateTimeTask);  
handler.postDelayed(updateTimeTask, 1000); 

用我的代码。或者随意修改！