Question

I am making an iPad app where I programmatically place UIButtons on a UIImageView inside a UIScrollView.

When someone pushes one of these buttons I would like to present a UIPopover. Since the buttons have been added programmatically, I also have to present the popover programmatically.

Here is my code for presenting the popover:

- (void)buttonHandler:(UIButton *)sender
{
    PushButtonViewController *controller = [[PushButtonViewController alloc] initWithButtonID:@"hej"];
    _pushButtonPopover = [[UIPopoverController alloc] initWithContentViewController:controller];

    _pushButtonPopover.delegate = self;

    if(![_pushButtonPopover isPopoverVisible]) {
       [_pushButtonPopover presentPopoverFromRect:sender.bounds inView:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
    } else {
        [_pushButtonPopover dismissPopoverAnimated:YES];
    }
}

This is the initializer of the popover view controller:

- (id)initWithButtonID:(NSString *)buttonID
{
    self = [super init];
    self.buttonID = buttonID;
    return self;
}

The problem is that when I do so, I get an empty popover:

Screenshot 1 – not working

However, when I use a pre-inserted button, hooked up with a segue i the Storyboard, everything works just fine:

Screenshot 2 – working fine

I really hope that you might have some suggestions to what I might be doing wrong. Thank you in advance!

Answer 1

I seem to have found the answer myself. For some reason you have to instantiate your ViewController from the storyboard like this:

PushButtonViewController *controller = [self.storyboard instantiateViewControllerWithIdentifier:@"Push Button Popover"];

This way the view is displayed correctly.