java 设置日历日期
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/16246193/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Set date of calendar
提问by ubundude
Ok, so what I'm trying to do is to set the set the date of a calendar instance, and then return the week_of_year. I am doing so by using the Calendar.set() functio
好的，所以我要做的是设置日历实例的日期，然后返回 week_of_year。我这样做是通过使用 Calendar.set() 函数
public String weekInYearForm = "ww";
SimpleDateFormat formWIM = new SimpleDateFormat(weekInYearForm, Locale.US);
Calendar lc = Calendar.getInstance();
lc.set(Calendar.YEAR, lYear);
lc.set(Calendar.MONTH, lMonth);
lc.set(Calendar.DAY_OF_MONTH, lDay);
wiy = formWIM.format(lc.get(Calendar.WEEK_OF_YEAR));
To get the lYear, lMonth, and lDay values, I am passing a string in the format 04/26/2013to through the following steps:
要获取 lYear、lMonth 和 lDay 值，我将04/26/2013通过以下步骤传递格式为 to的字符串：
String[] arrDate = dateIn.split("/");
int lMonth = Integer.parseInt(arrDate[0]) - 1;
Log.d("SaveHandler", "Month is: " + lMonth);
int lDay = Integer.parseInt(arrDate[1]);
Log.d("SaveHandler", "Day is: " + lDay);
int lYear = Integer.parseInt(arrDate[2]);
Log.d("SaveHandler", "Year is: " + lYear);
The problem I am facing is that when I look at what is outputed to wiy, it is always 1. Upon some further debugging, I realized that the time is being left at epoch time, and not setting to the values I need.
我面临的问题是，当我查看输出到 wiy 的内容时，它始终为 1。经过进一步调试，我意识到时间被保留在纪元时间，而不是设置为我需要的值。
I also tried using lc.set(lYear, lMonth, lDay), also to no avail. If anyone has any ideas, I would greatly appreciate them.
我也试过使用lc.set(lYear, lMonth, lDay)，也无济于事。如果有人有任何想法，我将不胜感激。
*EDIT: I did some debugging earlier and it is returning 1970 for the year and 0 for the month.
*编辑：我早些时候做了一些调试，它返回 1970 年和 0 月。
回答by Ilya
use
利用
formWIM.format(lc.getTime());
instead of
代替
formWIM.format(lc.get(Calendar.WEEK_OF_YEAR));
EDIT
You can parse your date (instead of dateIn.split(etc.)
编辑
您可以解析您的日期（而不是dateIn.split(等）
SimpleDateFormat monthDayYear = new SimpleDateFormat("MM/dd/yyyy", Locale.US); //04/26/2013
Date date = monthDayYear.parse("04/26/2013");
and then format it
然后格式化
SimpleDateFormat formWIM = new SimpleDateFormat("ww", Locale.US);
formWIM.format(date);
回答by cahen
This code is correct, the problem is in formWIM.format(...)or the battery of your motherboard clock is drained.
此代码是正确的，问题出在formWIM.format(...)或主板时钟的电池电量耗尽。
