Question

I am making my app compatible to iOS 5 but the app crashes on the code where i have used setContentViewController.

Here is my code.

[[ChoicesViewController sharedChoices] setCurrentValue:[[(UIButton *)sender titleLabel]  text]];

[self.choicesPopoverController setContentViewController:[ChoicesViewController sharedChoices]];

CGFloat popoverHeight = 44.0f * [[[ChoicesViewController sharedChoices] choices] count];

[self.choicesPopoverController setPopoverContentSize:CGSizeMake(380.0f, MIN(400.0f, popoverHeight))];

if ([self.choicesPopoverController isPopoverVisible]) {

    [self.choicesPopoverController dismissPopoverAnimated:YES];

} else {

    [self.choicesPopoverController presentPopoverFromRect:[(UIButton *)sender frame]

                                                   inView:self.view

                                 permittedArrowDirections:UIPopoverArrowDirectionAny

                                                 animated:YES];

}

here is what shared choices returns:

static ChoicesViewController *_sharedChoices = nil;

 +(id)sharedChoices 
   {

    if (!_sharedChoices) 

        {
        _sharedChoices = [[[self class] alloc] init];
    }

    return _sharedChoices;
    }

//When i comment the below code , the app wont crash in iOS 5 but the UIPopover is not shown too. And if I uncomment it it will crash in iOS 5.

-(UIPopoverController *)choicesPopoverController 
{
if (!choicesPopoverController) 
     {

        choicesPopoverController = [[UIPopoverController alloc] initWithContentViewController:self];
     }

  return choicesPopoverController;
 }

Answer 1

Finally i found the solution :

instead of writing

[self.choicesPopoverController setContentViewController:[ChoicesViewController sharedChoices]];

i did

choicesPopoverController = [[UIPopoverController alloc] initWithContentViewController:[ChoicesViewController sharedChoices]];

and commented out the this code

/*

-(UIPopoverController *)choicesPopoverController 
  {
    if (!choicesPopoverController) 
      {

          choicesPopoverController = [[UIPopoverController alloc] initWithContentViewController:self];
      }

   return choicesPopoverController;
 }

*/

Now it doesnt crash in iOS 5.