1

I've got a UIDatePicker with the time only and I need a possibility to set the minimum and the maximum hour is showed. For example, I need it to start at 6 hours and finish at 15 hrs. Is it possible to perform this with UIDatePicker?

rmaddy
  • 314,917
  • 42
  • 532
  • 579
Nikita Shytyk
  • 408
  • 7
  • 16
  • I'm afraid there's no official way to achieve this when using UIDatePicker as a count down timer. However, you could subclass UIPickerView - have a look at this question: https://stackoverflow.com/questions/31023356/how-can-i-set-the-uidatepickermodecountdowntimers-maximum-time/40969597 – neatchuck Jul 07 '18 at 15:57

3 Answers3

1

1) Use this function to retrieve the minimum and maximum date 

func getTimeIntervalForDate()->(min : Date, max : Date){

let calendar = Calendar.current
var minDateComponent = calendar.dateComponents([.hour], from: Date())
minDateComponent.hour = 09 // Start time


let formatter = DateFormatter()
formatter.dateFormat = "h:mma"
let minDate = calendar.date(from: minDateComponent)
print(" min date : \(formatter.string(from: minDate!))")

var maxDateComponent = calendar.dateComponents([.hour], from: date)
maxDateComponent.hour = 17 //EndTime



let maxDate = calendar.date(from: maxDateComponent)
print(" max date : \(formatter.string(from: maxDate!))")



return (minDate!,maxDate!)
}

2) Assign these dated to your pickerview

func createPickerView(textField : UITextField, pickerView : UIDatePicker){
    pickerView.datePickerMode = .time
    textField.delegate = self
    textField.inputView = pickerView
    let dates = getTimeIntervalForDate()

    pickerView.minimumDate = dates.min
    pickerView.maximumDate = dates.max
    pickerView.minuteInterval = 30
    pickerView.addTarget(self, action: #selector(self.datePickerValueChanged(_:)), for: UIControlEvents.valueChanged)
}

That's it :)

Preeti Rani
  • 685
  • 7
  • 17
  • this does not work as expected. DatePicker when in Time mode will still let you pick the time past dates.min. – user484691 Oct 10 '17 at 17:46
0

Just use this:

datePicker.maximumDate = myMaxDate;
datePicker. minimumDate = myMinDate;

Where myMaxDate and myMinDate are NSDate objects

Antonio MG
  • 20,382
  • 3
  • 43
  • 62
  • But the hard part is coming up with proper values for `myMaxDate` and `myMinDate` so the time range does what is needed. – rmaddy Nov 08 '13 at 15:52
  • Unfortunately this doesn't apply if the UIDatePicker is set to UIDatePickerModeCountDownTimer (Obj-C) or UIDatePicker.Mode.countDownTimer (Swift). – neatchuck Jul 07 '18 at 15:54
0

As for my problem, the answer with maximumDate and minimumDate isn't what I am looking for. Maybe my solution is not that clear and right, but it worked great for me. I have changed the UIDatePicker with UIPickerView, wrote a separate delegate for it:

@interface CHMinutesPickerDelegate () <UIPickerViewDelegate, UIPickerViewDataSource>

@property (nonatomic, strong) NSArray *minutesArray;

@end

@implementation CHMinutesPickerDelegate

- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:       (NSInteger)component {
    return [self.minutesArray count];
}

- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
    return 1;
}

- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
    return [self.minutesArray objectAtIndex: row];
}

- (NSArray *)minutesArray {
    if (!_minutesArray) {
        NSMutableArray *temporaryMinutesArray = [NSMutableArray array];
        for (int i = 0; i < 6; i++) {
            for (int j = 0; j < 2; j++) {
                [temporaryMinutesArray addObject: [NSString stringWithFormat: @"%i%i", i, j * 5]];
            }
        }
    _minutesArray = temporaryMinutesArray;
}
    return _minutesArray;
}

The minutesArray returns array of: { "05", "10"... etc}. It is an example for custom minutes picker, you can write the same thing for hour or etc, choosing your own maximum and minimum value. This worked nice for me.

Nikita Shytyk
  • 408
  • 7
  • 16