獲取前，當前和未來幾周不包括週六和週日

Question

我想從顯示日期/天星期一到週五排除週六/週日如下圖中提到的。

我的情景：

1. 當屏幕加載當前周應顯示。
2. 在以前的按鈕點擊（DisplayedWeek - 1）
3. 在單擊下一步按鈕（DisplayedWeek + 1）。

我的工作，

經過一番研究，這是我都試過了。

 let calendar = Calendar.current 

     let currentDate = calendar.startOfDay(for: Date()) 

     /* value = 0 for current, 
      value = 1 for next, 
      value = -1 for previous week. 

     */ 
     let nextWeek:Date = calendar.date(byAdding: .weekOfMonth, value: 1, to: currentDate)! as Date 

     let dayOfWeek = calendar.component(.weekday, from: nextWeek) 
     let weekdays = calendar.range(of: .weekday, in: .weekOfYear, for: nextWeek)! 

     let days = (weekdays.lowerBound ..< weekdays.upperBound).flatMap { 

      calendar.date(byAdding: .day, value: $0 - dayOfWeek, to: nextWeek) 

     }.filter { !calendar.isDateInWeekend($0) } 

     // Week Days from monday to friday 
     let formatter = DateFormatter() 
     formatter.dateFormat = "yyyy-MM-dd" 

     for date in days { 
      print(formatter.string(from: date)) 
     } 

在我的情況下，如果這一天是週六或週日它應顯示下週，但它顯示了同一個星期。

Answer 1

你只需要拿到current week monday's date，將其添加到一個數組和地圖最後一個數組元素添加一天它：

extension Calendar { 
    static let iso8601 = Calendar(identifier: .iso8601) 
} 
extension Date { 
    var cureentWeekMonday: Date { 
     return Calendar.iso8601.date(from: Calendar.iso8601.dateComponents([.yearForWeekOfYear, .weekOfYear], from: Date()))! 
    } 
    var currentWeekdays: [Date] { 
     var weekdays = [cureentWeekMonday] 
     (1...4).forEach({ _ in weekdays.append(Calendar.iso8601.date(byAdding: DateComponents(day: 1), to: weekdays.last!)!) }) 
     return weekdays 
    } 
} 

---

let currentWeekdays = Date().currentWeekdays 
print(currentWeekdays) // ["Jul 17, 2017, 12:00 AM", "Jul 18, 2017, 12:00 AM", "Jul 19, 2017, 12:00 AM", "Jul 20, 2017, 12:00 AM", "Jul 21, 2017, 12:00 AM"]