How to check the date is modified in UIDatePicker or not?

Question

I am using UIDatePicker to select a date. When loading the view date picker minimum date was set with current date, For my specification I need to know is there any modification done in UIDatePicker or not.

if ([[date_picker minimumDate] compare:[date_picker date]] != NSOrderedSame) {
  printf("value modified");
}

I have tried with the above condition but its always not matching even though I have not modified the date. Am I doing anything wrong? How do I find that out?

Lochana Ragupathy · Answer 1 · 2013-03-26T11:03:34.323

1

Set control events for datepicker like this

   [date_picker addTarget:self
               action:@selector(pickerChanged:)
     forControlEvents:UIControlEventValueChanged];

and in the pickerChanged method get its value

    - (void)pickerChanged:(id)sender{
             selectedDate=[sender date];
       }

date comparison with

    if ([initialDate compare:selectedDate]!=NSOrderedSame)
        {
           NSLog(@"modified");
         // two dates are same and the date formatting of the two dates must be same
        }

so whenever you change the date this method will be triggered initialDate is when the view loaded the value is set

edited Mar 26 '13 at 11:03

answered Mar 26 '13 at 10:34

Lochana Ragupathy

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Even if I revert the date back to original I should come to know, no modification in date. – Newbee Mar 26 '13 at 10:36
just set a flag in the pickerChanged method and the pickerChanged method will get executed oly when the date changes when it reverts back to current date set the flag as false – Lochana Ragupathy Mar 26 '13 at 10:39
thats what I am trying to do. but above condition is not matching for my case. – Newbee Mar 26 '13 at 10:40
current date, when the view is loaded. – Newbee Mar 26 '13 at 10:47
I have printed using date formatter both printing same date, but while comparing its not matching. – Newbee Mar 26 '13 at 10:48
your code worked for me with a small change just see my edited answer – Lochana Ragupathy Mar 26 '13 at 10:55
I have tried, Still no luck, I have been checking, I will update asap, thanks. – Newbee Mar 26 '13 at 11:23

How to check the date is modified in UIDatePicker or not?

1 Answers1