Uidatepicker Show Only Sunday's Date Only

UIDatePicker show only Sunday's date only?

finally, I myself found solution. In didSelectRow Method check if the selected day is sunday??? if yes then ok but if not then reload component to select date of nearest sunday.

func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {

    if component == 0 {
        pickerView.reloadComponent(1)
    }

    let titleLabel = pickerView.viewForRow(row, forComponent: component) as? UILabel
    titleLabel?.font = UIFont(name: BCGConstants.Fonts.Name.ProximaNovaBold, size: 27)!

    var dayValue = pickerView.selectedRowInComponent(1) + 1
    let monthValue = pickerView.selectedRowInComponent(0) + 1
    var yearValue = 0

    let unitFlags: NSCalendarUnit = [.Day, .Month, .Year, .Weekday]
    let currentDateComponents = NSCalendar.currentCalendar().components(unitFlags, fromDate: NSDate())

    if monthValue > currentDateComponents.month || (dayValue >= currentDateComponents.day && monthValue == currentDateComponents.month ) {
        yearValue = currentDateComponents.year
    } else {
        yearValue = currentDateComponents.year + 1
    }

    debugPrint("\(self.isGivenDaySunday(dayValue, selectedMonth: monthValue, selectedYear: yearValue)) day = \(dayValue) month = \(monthValue) )")

    let sundayCheck = self.isGivenDaySunday(pickerView.selectedRowInComponent(1) + 1, selectedMonth: pickerView.selectedRowInComponent(0) + 1, selectedYear: yearValue)

   if sundayCheck.isSunday {

        self.startDateTextField.text = sundayCheck.sundayDate?.fullStyleDateString
        self.newBootcamp?.startDate = sundayCheck.sundayDate!

    } else {

        //            titleLabel?.font = UIFont(name: BCGConstants.Fonts.Name.ProximaNovaBold, size: 27)!
        //            titleLabel?.textColor = UIColor.lightGrayColor()

        if dayValue > 15 {
            dayValue = pickerView.selectedRowInComponent(1) - (7 - sundayCheck.nextSundayAsWeekDay)

            pickerView.selectRow(dayValue, inComponent: 1, animated: true)
        } else {
            dayValue = pickerView.selectedRowInComponent(1) + sundayCheck.nextSundayAsWeekDay

            pickerView.selectRow(dayValue, inComponent: 1, animated: true)
        }

        var confirmSunday = self.isGivenDaySunday(dayValue + 1, selectedMonth: monthValue, selectedYear: yearValue)
      //  Added by mohsin : Reason bug : selecting previous day
        if confirmSunday.sundayDate?.isLessThanDate(NSDate()) == true {

             confirmSunday = self.isGivenDaySunday(dayValue, selectedMonth: monthValue, selectedYear: yearValue + 1)
            //TODO: Need to be verify again : If not working fine then you must try to change next commented statement and uncomment it
            // dayValue = pickerView.selectedRowInComponent(1) + sundayCheck.nextSundayAsWeekDay

            pickerView.selectRow(dayValue - 1, inComponent: 1, animated: true)

        }

        self.startDateTextField.text = confirmSunday.sundayDate?.fullStyleDateString
        self.newBootcamp?.startDate = confirmSunday.sundayDate!

        debugPrint(confirmSunday.sundayDate?.fullStyleDateString)

    }

}

Method which checks sunday is following one

func isGivenDaySunday(selectedDay: Int, selectedMonth: Int, selectedYear: Int) -> (isSunday: Bool, nextSundayAsWeekDay: Int, sundayDate: NSDate?) {
let unitFlags: NSCalendarUnit = [.Day, .Month, .Year, .Weekday]

    let selectedDateComponents = NSDateComponents()

    selectedDateComponents.month = selectedMonth
    selectedDateComponents.day = selectedDay
    selectedDateComponents.year = selectedYear

    let selectedDate = NSCalendar(identifier: NSCalendarIdentifierGregorian)?.dateFromComponents(selectedDateComponents)

    let newSelectedDateComponent = NSCalendar.currentCalendar().components(unitFlags, fromDate: selectedDate!)

    if newSelectedDateComponent.weekday == 1 { // 1 means SUNDAY as per Gregorian
        return (true, 0, selectedDate)
    } else {
       return (false, 8 - newSelectedDateComponent.weekday, nil) 

    }

}

How to show only seven days from now in UIDatePicker in iOS?

[datePicker setMinimumDate:[NSDate date]];
[datePicker setMaximumDate:[NSDate dateWithTimeIntervalSinceNow:60*60*24*7]];

He wants only seven days including current date.

how to make date only show weekends (saturday and sunday) for a month?

It is not clear what date type you are using but numpy has some nice business day functionality;

import numpy as np

date = np.datetime64("today")
dates = np.arange(date, date + 31)
mask = ~np.is_busday(dates)

print(dates[mask])

Need to show only Weekday with Date UIDatePicker in iPhone

No, as far as I know there is no way to set a custom date format in UIDatePicker. Anyways, it wouldn't make much sense to display only the weekdays in a date picker, because you would end up with multiple entries for each weekday:

• Fri (3rd)
• Sat (4th)
• Sun (5th)
• ...
• Fri (10th)
• Sat (11th)
• ...

If you only want the user to pick a weekday (Mon-Sun), you could simply use a UIPickerView. And make sure you don't hard-code the weekday names, but rather use - (NSArray *)weekdaySymbols on NSDateFormatter. This will take the user's locale into account and returns an array of weekday names as strings:

NSDateFormatter* dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
NSArray* weekdays = [dateFormatter weekdaySymbols];
// will return Sunday,Monday,Tuesday,Wednesday,Thursday,Friday,Saturday (en_US locale)

Alternatively you can use shortWeekdaySymbols:

NSDateFormatter* dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
NSArray* weekdays = [dateFormatter shortWeekdaySymbols];
// will return Sun,Mon,Tue,Wed,Thu,Fri,Sat (en_US locale)

How to adjust the date set through UIDatePicker

If what you want to do is to update the UIDatePicker with the date you want, you can simply set the date property of UIDatePicker.

let date = datePicker.date
if let modifiedDate = Calendar.current.date(byAdding: .day, value: 1, to: date) {
   datePicker.date = modifiedDate
   InputTextField.inputView = datePicker
   let dateFormatter = DateFormatter()
   dateFormatter.dateFormat = "MM/dd/yyyy"

   InputTextField.text = dateFormatter.string(from: datePicker!.date)
}

UIdatepicker showing weekdays

You need to create your own picker with a UIPickerView. Create an NSDateFormatter. You can then access the month names and the weekday names from the date formatter. An NSCalendar can be used to obtain the maximum number of days for a month.

The real trick is updating the picker view components as the user selects a value from one of the components. For example, if the user picks a month, you want to update the number of days shown in the day component (or, like a UIDatePicker), grey out invalid days. This is complicated by the fact that you don't have a year so there is no way to properly handle February.

And what do you do when a user picks a given weekday? How should this affect the selected day? Just things to consider.

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