Why do I have to tap UIDatePicker twice to set time?

Question

I have a UIDatePicker that I want to set to the string value in a textField. When I tap a second textField, I want the UIDatePicker to take the value in the first textField and use it as the starting time in the datePicker.

This works correctly, but only when I tap the second textField two times. The first time I tap it, the text field is selected (turns yellow) and the time is set to 6:00 am every time! When I tap the textField again, the timePicker is set correctly...

This is the result of tapping once:

This is the result of the second tap:

UPDATE: This is the code implemented for the tap:

- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{

[textField resignFirstResponder];   //  don't display the k/b

if (textField.tag == kStartTimeTag)  {
    textFieldTag = kStartTimeTag;
    textField.backgroundColor = [UIColor colorWithRed:252.0/255.0 green:255.0/255.0 blue:197.0/255.0 alpha:1.0];
}
else if (textField.tag == kEndTimeTag)  {
    textField.backgroundColor = [UIColor colorWithRed:252.0/255.0 green:255.0/255.0 blue:197.0/255.0 alpha:1.0];    
    textFieldTag = kEndTimeTag;

    //  now, set end time equal to start time
    [self.oTimePicker setDate:dateFromString(oStartTime.text, @"HH:mm")];

}

return NO;

}

Is there a way to make this work on the first tap?

Answer 1

Here's the solution for anybody who needs to do what I needed done:

    [self.oTimePicker setDate:dateFromString(self.oStartTime.text, @"HH:mm")];
    [self.oTimePicker reloadInputViews];

The key is the second line: -reloadInputViews

Thank you everybody for your suggestions...