倒数计时器在安卓 [英] countdown timer in android

问题描述

我要运行一个倒计时时间，在此我想说明天，小时，秒，milisec剩余的具体日期。并且将是不断变化直到特定日期的结束。 希望你能理解。

i want to run an countdown time , in which i want to show days,hours,sec and milisec remaining for a specific date. and will be be keep changing till the end of the specific date. Hope you can understand.

在此先感谢。

推荐答案

嗯，我认为这个问题是，你不知道，如何用时间来工作。在这里，我有我用来计算的一些项目，我分析出一个数据库的时间量的方法。 该参数是一个双精度值，这已得到了以秒为单​​位的全部时间。它返回一个字符串，在日，时，分，秒为字符串的时间。

Well, I think the problem is, that you dont know, how to work with the time. Here i have a method I use to calculate the amount of time of some items which I parse out of a db. The param is a double value, which has got the whole time in seconds. It returns a string with the time in days, hours, minutes and seconds as string.

public String timeCalculate(double ttime) {

    long days, hours, minutes, seconds;
    String daysT = "", restT = "";

    days = (Math.round(ttime) / 86400);
    hours = (Math.round(ttime) / 3600) - (days * 24);
    minutes = (Math.round(ttime) / 60) - (days * 1440) - (hours * 60);
    seconds = Math.round(ttime) % 60;

    if(days==1) daysT = String.format("%d day ", days);
    if(days>1) daysT = String.format("%d days ", days);

    restT = String.format("%02d:%02d:%02d", hours, minutes, seconds);

    return daysT + restT;
}

有关倒计时本身......把目标时间戳减去实际之一，瞧，你已经有了秒的时候:)把那些秒，以这种方式和你有剩余的时间。现在，你只需要做一些UI的东西;） 哦，和普通的Unix时间戳可以用这个小方法：

For the countdown itself...take the target timestamp minus the actual one and voila, you've got seconds left :) Put those seconds to this method and you've got the remaining time. Now you just need to do some UI things ;) Oh, and for the usual Unix Timestamp you can use this little method:

public static long getTimestamp() {
    return System.currentTimeMillis() / 1000;
}

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