UIPopoverController moves when I resize it

Question

I've got a UIPopoverController which I've been using for awhile. I'm updating my code for iOS 7 now and when I resize the popover it suddenly moves across the screen which makes for a very bad user experience.

When I'm in portrait orientation, it doesn't happen. I tap to open the popover, then I tap the button which causes the popover to expand and everything is fine. However, if I switch to Landscape orientation and do the same thing, when I tap the button to expand the popover, then it slides over to another location.

Here is a video showing what I'm talking about: https://vimeo.com/75632364

This the code that runs when the user taps the button that causes the resize of the popover:

- (IBAction) touchedButtonPayDownLoan:(id)sender {

    UIView *payOffView = nil;
    if ([self.liability isBankLoan]) {
        payOffView = self.viewPayoffBank;
    } else {
        payOffView = self.viewPayoffOther;
    }

    CGRect loanFrame = payOffView.frame;
    loanFrame.origin.y = self.toolbar.frame.origin.y;
    payOffView.frame = loanFrame;
    [self.view addSubview:payOffView];
    [self.view bringSubviewToFront:self.toolbar];

    [UIView beginAnimations:@"Show Payoff View" context:nil];

    NSMutableArray *items = [[self.toolbar items] mutableCopy];
    [items removeLastObject];
    [items addObject:self.barButtonFinish];
    self.toolbar.items = items;

    // -------- RELEVANT BITS HERE ---------
    CGRect frame = self.view.frame;
    frame.size.height += payOffView.frame.size.height;
    self.view.frame = frame;
    self.preferredContentSize = frame.size;
    // -------- RELEVANT BITS HERE ---------

    [UIView commitAnimations];

}

I don't want the popover to jump positions, because that will annoy the user. Any ideas?

Peter Sarnowski Peter Sarnowski · Accepted Answer · 2013-10-09T09:31:39

I've run into a similar issue, and I found that the movements of the popover are caused by the fact that the layout manager thinks that the popover with new size would not fit at last position, or would look better at new one - you are most likely creating the popover with

permittedArrowDirections = UIPopoverArrowDirectionAny

what's confusing is that although the popover moves to a new position the arrow doesn't get redrawn.

On my end, I've solved the issue by explicitly setting permittedArrowDirections to one value (UP or DOWN) and the resizes no longer make my popover move around.

Hope this helps.

UIPopoverController moves when I resize it

5 Answers