如何得到整数格式的NSDate日，月和年？
我想以整数forms获得NSDate的日，月，年组件，即如果date是1/2/1988年，那么我应该把1,2和1988作为整数分开。 我如何在iOS中做到这一点？ 我发现了类似的问题，但方法descriptionWithCalendarFormat ：给出了一个警告，似乎现在已经废弃。
这个给你，
NSDate *currentDate = [NSDate date]; NSCalendar* calendar = [NSCalendar currentCalendar]; NSDateComponents* components = [calendar components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay fromDate:currentDate]; // Get necessary date components [components month]; //gives you month [components day]; //gives you day [components year]; // gives you year
你可以像上面那样使用NSDateComponents。
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希望能帮助到你。
是的，通过使用NSCalendar，虽然，我认为这会使你的工作。
NSDateComponents *components = [[NSCalendar currentCalendar] components:NSDayCalendarUnit | NSMonthCalendarUnit | NSYearCalendarUnit fromDate:[NSDate date]]; NSInteger day = [components day]; NSInteger month = [components month]; NSInteger year = [components year];
迅速
let components = NSCalendar.currentCalendar().components([.Day, .Month, .Year], fromDate: self) let day = components.day let month = components.month let year = components.year
为了方便起见，你可以把它放在一个NSDate扩展中，并返回一个元组：
extension NSDate: Comparable { var dayMonthYear: (Int, Int, Int) { let components = NSCalendar.currentCalendar().components([.Day, .Month, .Year], fromDate: self) return (components.day, components.month, components.year) } }
现在你只需要写：
let (day, month, year) = date.dayMonthYear
如果你想只得到你能写的那一年：
let (_, _, year) = date.dayMonthYear
你可以使用NSDateComponents来获得这个，
NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar]; NSDate *currDate = [NSDate date]; NSDateComponents *dComp = [calendar components:( NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit ) fromDate:currDate]; int day = [dComp day]; int month = [dComp month]; int year = [dComp year];
对于像我这样直接从网页复制和粘贴的用户，这是iOS 8的一个小更新
NSCalendar* calendar = [NSCalendar currentCalendar]; NSDateComponents* components = [calendar components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay fromDate:[NSDate date]]; [components day]; //Day [components month];//Month [components year];//Year
区别在于NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay NSMonthCalendarUnit | NSDayCalendarUnit | NSYearCalendarUnit | NSWeekdayCalendarUnit NSMonthCalendarUnit | NSDayCalendarUnit | NSYearCalendarUnit | NSWeekdayCalendarUnit NSMonthCalendarUnit | NSDayCalendarUnit | NSYearCalendarUnit | NSWeekdayCalendarUnit已被弃用
把它放在一个扩展名，并过你的生活🍸🏖
extension Date{ var day:Int {return Calendar.current.component(.day, from:self)} var month:Int {return Calendar.current.component(.month, from:self)} var year:Int {return Calendar.current.component(.year, from:self)} } Date().day//22 Date().month//4 Date().year//2017
Swift 3.0（这是以前答案的一个迭代，但解决了所有您未来的应用程序项目）
你可以试试这个…….
Mycal = [NSCalendar currentCalendar]; today = [NSDate date]; compA =[Mycal components:(NSMonthCalendarUnit | NSDayCalendarUnit | NSYearCalendarUnit | NSWeekdayCalendarUnit) fromDate:today]; FirstDateofMonth=[today dateByAddingTimeInterval:([compA day]-1)*(-24*60*60)]; compA =[Mycal components:(NSMonthCalendarUnit | NSDayCalendarUnit | NSYearCalendarUnit | NSWeekdayCalendarUnit) fromDate:FirstDateofMonth]; today = FirstDateofMonth; compA = [Mycal components:(NSMonthCalendarUnit | NSDayCalendarUnit | NSYearCalendarUnit | NSWeekdayCalendarUnit) fromDate:today]; [compA setMonth:([compA month])]; [self DrawMonthInPortraitView]; [compA retain];
NSDate *currentDate = [NSDate date]; NSCalendar* calendar = [NSCalendar currentCalendar]; NSDateComponents* components = [calendar components:NSYearCalendarUnit|NSMonthCalendarUnit|NSDayCalendarUnit fromDate:currentDate]; // Get necessary date components [components month]; //gives you month [components day]; //gives you day [components year]; // gives you year NSString *temp=[NSString stringWithFormat:@"Months:%d Day:%d Year:%d",[components month], [components day],[components year]]; NSLog(@"%@",temp);
let date = Date() let calendar = Calendar.current let year = calendar.component(.year, from: date) let month = calendar.component(.month, from: date) let day = calendar.component(.day, from: date) print("hours = \(year):\(month):\(day)")
