基本上,就像标题说的那样。我想知道如何添加1天的NSDate。
如果它是:
21st February 2011
它将变成:
22nd February 2011
或者如果它是:
31st December 2011
它将变成:
1st January 2012.
基本上,就像标题说的那样。我想知道如何添加1天的NSDate。
如果它是:
21st February 2011
它将变成:
22nd February 2011
或者如果它是:
31st December 2011
它将变成:
1st January 2012.
当前回答
在Swift 2.1.1和xcode 7.1 OSX 10.10.5中,你可以使用函数添加任意数量的天数
func addDaystoGivenDate(baseDate:NSDate,NumberOfDaysToAdd:Int)->NSDate
{
let dateComponents = NSDateComponents()
let CurrentCalendar = NSCalendar.currentCalendar()
let CalendarOption = NSCalendarOptions()
dateComponents.day = NumberOfDaysToAdd
let newDate = CurrentCalendar.dateByAddingComponents(dateComponents, toDate: baseDate, options: CalendarOption)
return newDate!
}
函数调用,将当前日期增加9天
var newDate = addDaystoGivenDate(NSDate(), NumberOfDaysToAdd: 9)
print(newDate)
函数调用,将当前日期减少80天
newDate = addDaystoGivenDate(NSDate(), NumberOfDaysToAdd: -80)
print(newDate)
其他回答
NSDate *now = [NSDate date];
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *components = [calendar components:NSYearCalendarUnit|NSMonthCalendarUnit|NSDayCalendarUnit fromDate:now];
NSDate *startDate = [calendar dateFromComponents:components];
NSLog(@"StartDate = %@", startDate);
components.day += 1;
NSDate *endDate = [calendar dateFromComponents:components];
NSLog(@"EndDate = %@", endDate);
Swift 3.0非常简单的实现将是:
func dateByAddingDays(inDays: Int) -> Date {
let today = Date()
return Calendar.current.date(byAdding: .day, value: inDays, to: today)!
}
swift 5更新
let nextDate = fromDate.addingTimeInterval(60*60*24)
在swift中,您可以在NSDate中添加扩展方法
extension NSDate {
func addNoOfDays(noOfDays:Int) -> NSDate! {
let cal:NSCalendar = NSCalendar.currentCalendar()
cal.timeZone = NSTimeZone(abbreviation: "UTC")!
let comps:NSDateComponents = NSDateComponents()
comps.day = noOfDays
return cal.dateByAddingComponents(comps, toDate: self, options: nil)
}
}
你可以用这个
NSDate().addNoOfDays(3)
在斯威夫特
var dayComponenet = NSDateComponents()
dayComponenet.day = 1
var theCalendar = NSCalendar.currentCalendar()
var nextDate = theCalendar.dateByAddingComponents(dayComponenet, toDate: NSDate(), options: nil)