Failed to set Datepicker's minimum date - ios

Question

I have CalenderVC which consist of Container View named PickerController.
PickerController consist of one toolbar,datepicker.Everytime i want to add date i use PickerController but
my problem is on somecondition i also want to set minimum date.I also passed minimumdate using customdelegate but still datepicker not set minimum date.
//CalendarVC added PickerController
- (void)displayContentView
{
UIStoryboard *story=[UIStoryboard storyboardWithName:#"Pagebar" bundle:nil];
objContent=[story instantiateViewControllerWithIdentifier:#"pickerVCID"];
objContent.datePicker.hidden=false;
self.dtDelegate=objContent;
objContent.view.frame=CGRectMake(0,0, self.view.frame.size.width, 280);
if(isFromDate==false)
{
// delegate method that set minimum date of picker
[self.dtDelegate setMinDate:minimumDate];
}
_pickerContainerVw.hidden=false;
[self addChildViewController:objContent];
[self.view addSubview:_pickerContainerVw];
[objContent didMoveToParentViewController:self];
}
-(void)removeContentView
{
_pickerContainerVw.hidden=true;
[objContent willMoveToParentViewController:nil];
[objContent.view removeFromSuperview];
[objContent removeFromParentViewController];
objContent.view.hidden=true;
}
// In pickercontroller
-(void)setMinDate:(NSDate *)minDate
{
[self.datePicker setMinimumDate:minDate];
[self.view addSubview:self.datePicker];
NSLog(#"minimum date %#",minDate);
}

Answer 1

There are several potential problems with your code.
First make sure you have connected your outlets in pickerVCID, especially datePicker.
Then I wonder why you add the picker to the view pickercontroller in setMinDate:? Since you seem to have designed it as a storyboard view controller you already have it as a child in the correct view. In that case you can just hide/show it.
Also, where do you set _pickerContainerVw? Is it the same as objContent.view? You are adding the objContentas a child view controller, but _pickerContainervW as sub-view. Probably you want to add the objContent.view as a sub-view instead.
With the risk of introducing side-effects with my changes, since I haven't seen all of your code, I have fixed some of the above.
//CalendarVC added PickerController
- (void)displayContentView
{
// Instantiate picker
UIStoryboard *story=[UIStoryboard storyboardWithName:#"Pagebar" bundle:nil];
objContent=[story instantiateViewControllerWithIdentifier:#"pickerVCID"];
self.dtDelegate=objContent;
objContent.view.frame=CGRectMake(0,0, self.view.frame.size.width, 280);
// Add it as a child VC
[self addChildViewController:objContent];
[self.view addSubview:objContent.view];
[objContent didMoveToParentViewController:self];
// Start with hidden date picker, show if needed
objContent.datePicker.hidden = YES;
if(isFromDate==false)
{
// delegate method that set minimum date of picker
objContent.datePicker.hidden = NO;
[self.dtDelegate setMinDate:minimumDate];
}
}
-(void)removeContentView
{
[objContent willMoveToParentViewController:nil];
[objContent.view removeFromSuperview];
[objContent removeFromParentViewController];
}
// In pickercontroller
-(void)setMinDate:(NSDate *)minDate
{
[self.datePicker setMinimumDate:minDate];
NSLog(#"minimum date %#",minDate);
}