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
使用以下代码:
NSDate *now = [NSDate date];
int daysToAdd = 1;
NSDate *newDate1 = [now dateByAddingTimeInterval:60*60*24*daysToAdd];
As
addTimeInterval
现在已弃用。
其他回答
斯威夫特5
let today = Date()
let nextDate = Calendar.current.date(byAdding: .day, value: 1, to: today)
objective - c
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
// now build a NSDate object for the next day
NSDateComponents *offsetComponents = [[NSDateComponents alloc] init];
[offsetComponents setDay:1];
NSDate *nextDate = [gregorian dateByAddingComponents:offsetComponents toDate: [NSDate date] options:0];
这是一个通用的方法,它允许您在指定的日期中添加/减去任何类型的单位(年/月/日/小时/秒等)。
使用Swift 2.2
func addUnitToDate(unitType: NSCalendarUnit, number: Int, date:NSDate) -> NSDate {
return NSCalendar.currentCalendar().dateByAddingUnit(
unitType,
value: number,
toDate: date,
options: NSCalendarOptions(rawValue: 0))!
}
print( addUnitToDate(.Day, number: 1, date: NSDate()) ) // Adds 1 Day To Current Date
print( addUnitToDate(.Hour, number: 1, date: NSDate()) ) // Adds 1 Hour To Current Date
print( addUnitToDate(.Minute, number: 1, date: NSDate()) ) // Adds 1 Minute To Current Date
// NOTE: You can use negative values to get backward values too
Swift 4,如果你真正需要的是24小时轮班(60*60*24秒)而不是“1个日历天”
未来: let dayAhead = Date(timeIntervalSinceNow: TimeInterval(86400.0))
过去: let dayAgo = Date(timeIntervalSinceNow: TimeInterval(-86400.0))
基于highmaintenance的回答和vikingosegundo的评论,一个工作的Swift 3+实现。这个日期扩展也有额外的选项来改变年,月和时间:
extension Date {
/// Returns a Date with the specified amount of components added to the one it is called with
func add(years: Int = 0, months: Int = 0, days: Int = 0, hours: Int = 0, minutes: Int = 0, seconds: Int = 0) -> Date? {
let components = DateComponents(year: years, month: months, day: days, hour: hours, minute: minutes, second: seconds)
return Calendar.current.date(byAdding: components, to: self)
}
/// Returns a Date with the specified amount of components subtracted from the one it is called with
func subtract(years: Int = 0, months: Int = 0, days: Int = 0, hours: Int = 0, minutes: Int = 0, seconds: Int = 0) -> Date? {
return add(years: -years, months: -months, days: -days, hours: -hours, minutes: -minutes, seconds: -seconds)
}
}
如果按照OP的要求只增加一天,则用法如下:
let today = Date() // date is then today for this example
let tomorrow = today.add(days: 1)
在斯威夫特
var dayComponenet = NSDateComponents()
dayComponenet.day = 1
var theCalendar = NSCalendar.currentCalendar()
var nextDate = theCalendar.dateByAddingComponents(dayComponenet, toDate: NSDate(), options: nil)