On Nov 14, 2013, at 09:22 , Fritz Anderson <fri...@manoverboard.org> wrote:
> On 13 Nov 2013, at 11:28 PM, Rick Mann <rm...@latencyzero.com> wrote: > >> I use a storyboard segue to present this popover, but it's not centered on >> the button: >> >> http://cl.ly/image/1S153u1a1I3O >> >> Any idea what's wrong? TIA, > > [Shows something that looks like a gray gear-icon UIBarButtonItem in a > UIToolbar at the top of (guessing, and if it matters) the detail part of an > iPad UISplitViewController. Toolbar is flush at the bottom of the status bar. > iOS 7 presentation. A popover descends from an X location that is close to, > probably exactly at, the trailing edge of the button. Y location at or close > to the bottom of the button.] > > More information would be helpful. > > Is that gear button actually a UIBarButtonItem? And are you using > presentPopoverFromBarButtonItem:…? Actually a UIBarButtonItem. Whole thing is created in IB. > If not, is the area that visually contains the button a UIToolbar? > > Is the area that visually contains the button object its actual superview > (moot in the case of bar items, because they don't have superviews, or > frames, or bounds)? > > If it's not a bar item, is there anything funny about how it draws its > content; specifically, is the icon drawn off-center in the bounds? Is there > any applicable justification/alignment property? > > If you are using an actual button, or other object that is a view, and > therefore not a bar item, and therefore are using > presentPopoverFromRect:inView:…, are you using the object's frame, and not > bounds? > > [View, not bar item] Are you passing the actual, and not the visual, > superview? Have you verified it by breaking at the call site and examining > what you're passing? While you're at that breakpoint, have you examined the > rect? > > If you're using …FromRect:…, are you (or whatever is giving it to you) > offsetting the rect by half its width? Not easy to imagine why, but if the > workings of the code were easy to imagine, you wouldn't have a bug. It's a segue in IB. It's about as straightforward as you can get. > [Bizarre] Are there any affine transforms on the button object (must be a > view) or its superview? > > Most of these questions are dead ends, depending on the answers of the > precedent ones, but the interaction on mailing lists and fora has latency > problems. Ducan suggests it's an iOS bug; I'm going to leave it at that. -- Rick
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