日期选择器startDate和endDate Swift 3

Question

我想要显示UIDatePickerView仅180天的开始日期日历，当用户在180天内选择任何开始日期时，他将点击结束日期按钮，以便日期选择器只显示89从开始日期和选定的开始日期开始的日期不应该是结束日期

Answer 1

您可以使用addingTimeInterval方法Date来做到这一点。

datePicker.minimumDate = startDate?.addingTimeInterval(60 * 60 * 24 * 90) // 90 days interval offset 

现在为endDate，总的DatePicker显示装置90日内提出日期，然后启动日期。

如果你想在startDate的当前日期显示180天，那么你可以像下面一样管理startDate。

datePicker.minimumDate = Date() //Today's date 
datePicker.maximumDate = Date().addingTimeInterval(60 * 60 * 24 * 180) //180 days forward time from today. 

它只会在datePicker中显示180天的持续时间。

Answer 2

如果你想显示从开始日期只有90天，比：

@IBOutlet var datePicker: UIDatePicker! 

override func viewDidLoad() { 
     super.viewDidLoad() 
     // Do any additional setup after loading the view, typically from a nib. 

     datePicker.datePickerMode = .date //To show only Date format for date picker 

    //Get current Date 
    var currentDate = Date() 

    let addDays: TimeInterval = (60 * 60 * 24 * 180) //Add 180 for initial Days 

    currentDate = currentDate.addingTimeInterval(addDays) 

    datePicker.minimumDate = Date() //Start with current date 
    datePicker.maximumDate = currentDate //End with current date + 180 days. 

} 

//Action for DatePicker 
@IBAction func displayDay(_ sender: Any) { 

    let choosenDate = datePicker.date 

    //If you want to set Date format for selected picker date 
    let dateFormatter = DateFormatter() 
    dateFormatter.dateFormat = "MMM dd, yyyy" 

    let selectedDate = dateFormatter.string(from: choosenDate) 
    print(selectedDate) 

    //You can use different datePicker object to set below endDate as +90 days because if you you same date picker it will always add selected date +90 days to date picker. 
    let addDays: TimeInterval = (60 * 60 * 24 * 89) //Add 89 Days 

    //Set Start Date as choosen Date 
    datePicker.minimumDate = choosenDate 

    //Set Max Date as choosen Date + 89 Days 
    datePicker.maximumDate = Date(timeInterval: addDays, since: choosenDate) 
} 

Answer 3

// 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  
}