如何添加7天当前的日期，而不会超过一个月的可用天数？ [英] How to add 7 days to current date while not going over available days of a month?

问题描述

我试图让该月的今天一天。

和我想要做的就是增加7天数和获得一个月，目前一天。

此外，我希望它能够进入下一个month..Lets说今天是第29届。当它增加了7天，我该怎么去走接下来的一个月，如29 + 7就等于下个月的5日。

如何，我会去这样做？

香港专业教育学院已设法获取当前日期。

 日历CAL = Calendar.getInstance（）;
    INT天= cal.get（Calendar.DAY_OF_MONTH）;
    INT DAYOFMONTH =天;
    今天的String = getToday（）;
 

我使用的这个，因为我想推出一个AsyncTask的在我的主要活动，每7天。

解决方案

 添加（Calendar.DAY_OF_MONTH，7）;
 

从日历的JavaDoc

I am trying to get todays day of the month.

And what i want to do is add seven days to the number and the get that current day of the month.

Also i want it to be able to go to the next month..Lets say today is the 29th. When it adds 7 days how can i get it to go the the next month such as 29 + 7 would equal the 5th of the next month.

How would i go about doing this?

Ive already managed to get the current date.

Calendar cal = Calendar.getInstance();
    int day = cal.get(Calendar.DAY_OF_MONTH);
    int dayOfMonth = day;
    String today = getToday();

I am using this because i would like to launch an asynctask in my main activity every 7 days.

解决方案

add(Calendar.DAY_OF_MONTH, 7);

From Calendar JavaDoc

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