[英]NSCalendar return wrong date for previous Monday in first week of next year
[英]NSCalendar week number of date
我正在嘗試從日期獲取星期數。 有人可以告訴我,無論我在哪里輸入日期,為什么只返回0:
let currentWeekNumber = NSCalendar.currentCalendar().components(NSCalendarUnit.CalendarUnitWeekOfYear, fromDate: myDate).weekOfYear
myDate的格式如下:2015-01-23 11:52:35 +0000
Swift中的解決方案將是不錯的:)
好像您的發布行沒有錯誤。 只需檢查以下解決方案以確認結果是否相同。
注意:只是想消除由於日期而引起的無關問題的任何可能性。 對於Swift,您可以使用。
let calender = NSCalendar.currentCalendar()
let dateComponent = calender.components(NSCalendarUnit.WeekOfYearCalendarUnit | NSCalendarUnit.DayCalendarUnit | NSCalendarUnit.MonthCalendarUnit | NSCalendarUnit.YearCalendarUnit, fromDate:NSDate())
println ("Week: = \(dateComponent.weekOfYear)")
因此,響應應如下所示:
Week: = 4
嘗試這個 :
NSDateComponents *components = [[NSCalendar currentCalendar] components:NSCalendarUnitDay | NSCalendarUnitMonth | NSCalendarUnitYear | NSCalendarUnitWeekOfMonth fromDate:[NSDate date]];
NSInteger curr_month = [components month];
NSInteger curr_year = [components year];
NSInteger curr_date = [components day];
NSLog(@"%d %d %d, \n Week no: %ld",curr_date, curr_month,curr_year, (long)[components weekOfMonth]);
輸出為:2015-01-22 18:19:40.209 Sample [38734:3031191] 22 1 2015,
第4周
使用此代碼
NSDateComponents *components = [[NSCalendar currentCalendar] components:NSCalendarUnitDay | NSCalendarUnitMonth | NSCalendarUnitYear | NSCalendarUnitWeekOfMonth fromDate:[NSDate date]];
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSInteger month = [components month];
NSInteger year = [components year];
NSInteger day = [components day];
NSLog(@"%ld",(long)[components weekOfMonth]);
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