两个日期对象之间的所有日期(Swift)
我正在使用两个日期对象之间的所有日期(Swift),swift,nsdate,nsdateformatter,nscalendar,nsdatecomponents,Swift,Nsdate,Nsdateformatter,Nscalendar,Nsdatecomponents,我正在使用NSDateComponents()创建日期 。。。现在我想打印从开始日期到今天的所有日期,NSDate()。我已经尝试过使用NSCalendarUnit,但它只输出整个差异,而不是两个日期之间的单个日期 let unit: NSCalendarUnit = [.Year, .Month, .Day, .Hour, .Minute, .Second] let diff = NSCalendar.currentCalendar().components(unit, fromDate: s
NSDateComponents()
创建日期
。。。现在我想打印从开始日期到今天的所有日期,NSDate()
。我已经尝试过使用NSCalendarUnit
,但它只输出整个差异,而不是两个日期之间的单个日期
let unit: NSCalendarUnit = [.Year, .Month, .Day, .Hour, .Minute, .Second]
let diff = NSCalendar.currentCalendar().components(unit, fromDate: startDateNSDate, toDate: NSDate(), options: [])
如何打印两个Date
对象之间的所有日期
编辑2019
与此同时,类的命名也发生了变化——NSDate
现在只是Date
NSDateComponents
现在称为DateComponents
NSCalendar.currentCalendar()
现在只是Calendar.current
您想要的代码变成了
let startDate = NSDateComponents()
startDate.year = 2015
startDate.month = 9
startDate.day = 1
let calendar = NSCalendar.currentCalendar()
let startDateNSDate = calendar.dateFromComponents(startDate)!
var offsetComponents:NSDateComponents = NSDateComponents();
offsetComponents.day = 1
var nd:NSDate = startDateNSDate;
println(nd)
while nd.timeIntervalSince1970 < NSDate().timeIntervalSince1970 {
nd = calendar.dateByAddingComponents(offsetComponents, toDate: nd, options: nil)!;
println(nd)
}
let startDate=NSDateComponents()
起始日期。年份=2015年
startDate.month=9
startDate.day=1
让calendar=NSCalendar.currentCalendar()
让startDateNSDate=calendar.dateFromComponents(startDate)!
var offsetComponents:NSDateComponents=NSDateComponents();
offsetComponents.day=1
变量nd:NSDate=startDateNSDate;
println(nd)
而nd.timeIntervalSince1970
只需在日期上添加一天单位,直到达到
当前日期(Swift 2代码):
var-date=startDateNSDate//第一个日期
让endDate=NSDate()//最后一个日期
//用于打印日期的格式化程序,可根据需要进行调整:
设fmt=NSDateFormatter()
fmt.dateFormat=“dd/MM/yyyy”
//当date我使用这种方法时(Swift 3):
输出为:
2017-01-02
2017-01-03
2017-01-04
2017-01-05
2017-01-06
2017-01-07
2017-01-08
2017-01-09
使用扩展名:
extension Date {
static func dates(from fromDate: Date, to toDate: Date) -> [Date] {
var dates: [Date] = []
var date = fromDate
while date <= toDate {
dates.append(date)
guard let newDate = Calendar.current.date(byAdding: .day, value: 1, to: date) else { break }
date = newDate
}
return dates
}
}
同样的事情,但更漂亮:
extension Date {
func allDates(till endDate: Date) -> [Date] {
var date = self
var array: [Date] = []
while date <= endDate {
array.append(date)
date = Calendar.current.date(byAdding: .day, value: 1, to: date)!
}
return array
}
}
这里是打印两个日期之间所有日期的解决方案(Swift 4代码)
@马丁:我得到了这个错误“二进制运算符”@Smita:你使用了答案第二部分的Swift 3代码了吗?你是否将date
和endDate
定义为date
(而不是NSDate
)?什么是“startDate”?@amin将date()改为startDate如果让date=Calendar.current.date(通过添加:.day,值:20,to:Date()){print(Date().allDates(till:Date))}Calendar.current.Date(通过添加:.day,值:1,to:Date)!
import Foundation
class Dates {
static func printDatesBetweenInterval(_ startDate: Date, _ endDate: Date) {
var startDate = startDate
let calendar = Calendar.current
let fmt = DateFormatter()
fmt.dateFormat = "yyyy-MM-dd"
while startDate <= endDate {
print(fmt.string(from: startDate))
startDate = calendar.date(byAdding: .day, value: 1, to: startDate)!
}
}
static func dateFromString(_ dateString: String) -> Date {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd"
return dateFormatter.date(from: dateString)!
}
}
Dates.printDatesBetweenInterval(Dates.dateFromString("2017-01-02"), Dates.dateFromString("2017-01-9"))
2017-01-02
2017-01-03
2017-01-04
2017-01-05
2017-01-06
2017-01-07
2017-01-08
2017-01-09
extension Date {
static func dates(from fromDate: Date, to toDate: Date) -> [Date] {
var dates: [Date] = []
var date = fromDate
while date <= toDate {
dates.append(date)
guard let newDate = Calendar.current.date(byAdding: .day, value: 1, to: date) else { break }
date = newDate
}
return dates
}
}
let datesBetweenArray = Date.dates(from: Date(), to: Date())
extension Date {
func allDates(till endDate: Date) -> [Date] {
var date = self
var array: [Date] = []
while date <= endDate {
array.append(date)
date = Calendar.current.date(byAdding: .day, value: 1, to: date)!
}
return array
}
}
if let date = Calendar.current.date(byAdding: .day, value: 20, to: Date()) {
print(Date().allDates(till: date))
}
var mydates : [String] = []
var dateFrom = Date() // First date
var dateTo = Date() // Last date
// Formatter for printing the date, adjust it according to your needs:
let fmt = DateFormatter()
fmt.dateFormat = "yyy-MM-dd"
dateFrom = fmt.date(from: strstartDate)! // "2018-03-01"
dateTo = fmt.date(from: strendDate)! // "2018-03-05"
while dateFrom <= dateTo {
mydates.append(fmt.string(from: dateFrom))
dateFrom = Calendar.current.date(byAdding: .day, value: 1, to: dateFrom)!
}
print(mydates) // Your Result
["2018-03-01", "2018-03-02", "2018-03-03", "2018-03-04", "2018-03-05"]