Ios 在一个月内获得工作日
我想在一个月内得到日期 我的计划是Ios 在一个月内获得工作日,ios,swift,nsdate,weekday,weekend,Ios,Swift,Nsdate,Weekday,Weekend,我想在一个月内得到日期 我的计划是 获取给定月份的开始和结束日期 获取该范围内的所有日期 使用该方法迭代并消除周末内的日期 其余日期为工作日 因此，我创建了两个NSDate扩展方法来获取月份的开始日期和结束日期 extension NSDate { var startOfMonth: NSDate { let calendar = NSCalendar.currentCalendar() let components = calendar.componen
NSDateextension NSDate {
var startOfMonth: NSDate {
let calendar = NSCalendar.currentCalendar()
let components = calendar.components([.Year, .Month], fromDate: self)
return calendar.dateFromComponents(components)!
}
var endOfMonth: NSDate {
let calendar = NSCalendar.currentCalendar()
let components = NSDateComponents()
components.month = 1
return (calendar.dateByAddingComponents(components, toDate: self.startOfMonth, options: NSCalendarOptions())?.dateByAddingTimeInterval(-1))!
}
}
let calendar = NSCalendar.currentCalendar()
let normalizedStartDate = calendar.startOfDayForDate(NSDate().startOfMonth)
let normalizedEndDate = calendar.startOfDayForDate(NSDate().endOfMonth)
var dates = [normalizedStartDate]
var currentDate = normalizedStartDate
repeat {
currentDate = calendar.dateByAddingUnit(NSCalendarUnit.Day, value: 1, toDate: currentDate, options: .MatchNextTime)!
dates.append(currentDate)
} while !calendar.isDate(currentDate, inSameDayAsDate: normalizedEndDate)
let weekdays = dates.filter { !calendar.isDateInWeekend($0) }
weekdays.forEach { date in
print(NSDateFormatter.localizedStringFromDate(date, dateStyle: .FullStyle, timeStyle: .NoStyle))
}
Monday, February 1, 2016
Tuesday, February 2, 2016
Wednesday, February 3, 2016
Thursday, February 4, 2016
Friday, February 5, 2016
Monday, February 8, 2016
Tuesday, February 9, 2016
Wednesday, February 10, 2016
Thursday, February 11, 2016
Friday, February 12, 2016
Monday, February 15, 2016
Tuesday, February 16, 2016
Wednesday, February 17, 2016
Thursday, February 18, 2016
Friday, February 19, 2016
Monday, February 22, 2016
Tuesday, February 23, 2016
Wednesday, February 24, 2016
Thursday, February 25, 2016
Friday, February 26, 2016
Monday, February 29, 2016
- 获取当前日历
let calendar = NSCalendar.currentCalendar() - 从当前日期中获取
和月
日期组件年let components = calendar.components([.Year, .Month], fromDate: NSDate()) - 获取每月第一天的日期
let startOfMonth = calendar.dateFromComponents(components)! - 获取当前月份的天数
let numberOfDays = calendar.rangeOfUnit(.Day, inUnit: .Month, forDate: startOfMonth).lengthlet allDays = Array(0..<numberOfDays).map{ calendar.dateByAddingUnit(.Day, value: $0, toDate: startOfMonth, options: [])!} - 为当月的每一天创建一个
实例数组NSDatelet numberOfDays = calendar.rangeOfUnit(.Day, inUnit: .Month, forDate: startOfMonth).lengthlet allDays = Array(0..<numberOfDays).map{ calendar.dateByAddingUnit(.Day, value: $0, toDate: startOfMonth, options: [])!}
let calendar = Calendar.current
let components = calendar.dateComponents([.year, .month], from: Date())
let startOfMonth = calendar.date(from:components)!
let numberOfDays = calendar.range(of: .day, in: .month, for: startOfMonth)!.upperBound
let allDays = Array(0..<numberOfDays).map{ calendar.date(byAdding:.day, value: $0, to: startOfMonth)!}
let workDays = allDays.filter{ !calendar.isDateInWeekend($0) }
let calendar=calendar.current
让components=calendar.dateComponents（[.year，.month]，from:Date（））
让startOfMonth=calendar.date（from:components）！
设numberOfDays=calendar.range（of:.天，in:.月，for:startOfMonth）！。上限
让allDays=Array（0..要获得比上面给出的更一般的答案，您可以实现自己的SequenceType
运行/生成NSDate
元素
从（Swift<2.0）修改SequenceType
DateRange
实现，我们可以构建以下内容：
/* Modified version of Adam Preble:s DateRange: http://adampreble.net/blog/2014/09/iterating-over-range-of-dates-swift/ */
func < (left: NSDate, right: NSDate) -> Bool {
return left.compare(right) == NSComparisonResult.OrderedAscending
}
struct DateRange : SequenceType {
var calendar: NSCalendar
var startDate: NSDate
var endDate: NSDate
var stepUnits: NSCalendarUnit
var stepValue: Int
func generate() -> Generator {
return Generator(range: self, firstDate: true)
}
struct Generator: GeneratorType {
var range: DateRange
var firstDate : Bool = true
mutating func next() -> NSDate? {
if firstDate {
firstDate = false
return range.startDate
}
guard let nextDate = range.calendar.dateByAddingUnit(range.stepUnits,
value: range.stepValue, toDate: range.startDate,
options: NSCalendarOptions.MatchFirst) where !(range.endDate < nextDate) else {
return nil
}
range.startDate = nextDate
return nextDate
}
}
}
输出：
/* Mon, Feb. 1, 2016
Tue, Feb. 2, 2016
Wed, Feb. 3, 2016
Thu, Feb. 4, 2016
Fri, Feb. 5, 2016
Mon, Feb. 8, 2016
Tue, Feb. 9, 2016
...
Thu, Feb. 25, 2016
Fri, Feb. 26, 2016
Mon, Feb. 29, 2016 */
/* Mon, Feb. 1, 2016
Tue, Feb. 2, 2016
Wed, Feb. 3, 2016
Thu, Feb. 4, 2016
Fri, Feb. 5, 2016
Mon, Feb. 8, 2016
Tue, Feb. 9, 2016
...
Fri, Dec. 23, 2016
Mon, Dec. 26, 2016
Tue, Dec. 27, 2016
Wed, Dec. 28, 2016
Thu, Dec. 29, 2016
Fri, Dec. 30, 2016
// 2nd range print
Fri, Jul. 1, 2016
Mon, Jul. 4, 2016
Tue, Jul. 5, 2016
Wed, Jul. 6, 2016
Thu, Jul. 7, 2016
...
Fri, Jun. 23, 2017
Mon, Jun. 26, 2017
Tue, Jun. 27, 2017
Wed, Jun. 28, 2017
Thu, Jun. 29, 2017
Fri, Jun. 30, 2017 */
一个数组中一个月的日期（[NSDate]
）可能不是问题，但是使用序列对于更大的日期跨度是很有价值的，而且当您需要多功能性时，w.r.t.会重新分配数组的大小和成员；特别是在一个数组中，您一次只能按顺序使用一个成员
例如，在下面的示例中使用NSDate
数组是非常不必要的（并且可能会产生不必要的开销；但让我们把它放在一边，因为我们希望避免一些评论者提出早熟优化的问题：））
输出：
/* Mon, Feb. 1, 2016
Tue, Feb. 2, 2016
Wed, Feb. 3, 2016
Thu, Feb. 4, 2016
Fri, Feb. 5, 2016
Mon, Feb. 8, 2016
Tue, Feb. 9, 2016
...
Thu, Feb. 25, 2016
Fri, Feb. 26, 2016
Mon, Feb. 29, 2016 */
/* Mon, Feb. 1, 2016
Tue, Feb. 2, 2016
Wed, Feb. 3, 2016
Thu, Feb. 4, 2016
Fri, Feb. 5, 2016
Mon, Feb. 8, 2016
Tue, Feb. 9, 2016
...
Fri, Dec. 23, 2016
Mon, Dec. 26, 2016
Tue, Dec. 27, 2016
Wed, Dec. 28, 2016
Thu, Dec. 29, 2016
Fri, Dec. 30, 2016
// 2nd range print
Fri, Jul. 1, 2016
Mon, Jul. 4, 2016
Tue, Jul. 5, 2016
Wed, Jul. 6, 2016
Thu, Jul. 7, 2016
...
Fri, Jun. 23, 2017
Mon, Jun. 26, 2017
Tue, Jun. 27, 2017
Wed, Jun. 28, 2017
Thu, Jun. 29, 2017
Fri, Jun. 30, 2017 */