ios - 日期选择器 startDate 和 endDate Swift 3

Question

我只想显示 180 天的 UIDatePickerView 开始日期日历，当用户选择 180 天内的任何开始日期时，他将单击结束日期按钮，因此日期选择器应该只显示 89 天开始日期和选定的开始日期不应是结束日期

Answer 1

// Add A Button And Give them Connection
 @IBOutlet weak var DateSelect: UIButton!

// Add "UIDatePicker" to your project and Give them connection
@IBOutlet weak var fromedatepicker: UIDatePicker! 

// . and  Make an Action Button to "UIDatePicker"
@IBAction func fromedatepicker(_ sender: Any) {
    let calendar: NSCalendar = NSCalendar(calendarIdentifier: NSCalendar.Identifier.gregorian)!
    let currentDate = NSDate()
    let dateComponents = NSDateComponents()
    let minDate = calendar.date(byAdding: dateComponents as DateComponents, to: currentDate as Date, options: NSCalendar.Options(rawValue: 0))

    dateComponents.month = 3 //or you can change month = day(90)           

    let maxDate = calendar.date(byAdding: dateComponents as DateComponents, to: currentDate as Date, options: NSCalendar.Options(rawValue: 0))
    self.fromedatepicker.maximumDate = maxDate
    self.fromedatepicker.minimumDate = minDate

    let dateFormatter = DateFormatter()

    dateFormatter.dateFormat = "dd/MM/yyyy"
    let strDate = dateFormatter.string(from: fromedatepicker.date)
    print(strDate)

    DateSelect.DateSelect.titleLabel?.text =  strDate    
}