Open Radar

 
19-Mar-2013 12:13 AM Peter Steinberger:
Summary:

UIMenuController doesn't re-set UICallbar page state when changing items. When the menu is larger than the screen space, < > arrows will be displayed to split up the content. Press > and go into the second "page" of the callout menu, then select a menu. The submenu is displayed, but it's already at the second page! And the < arrow isn't working. Once you press the > arrow, nothing happens (but internal state of UICalloutBar gets fixed) and then < works again. But obviously, that's not the real fix.

I found two workarounds. The ugly one is

 [menu setMenuVisible:NO animated:YES];

before showing the menu again. But that ruins the fade animation.

The better one is to reset the callout bar state:

        [((id (*)(id, SEL))objc_msgSend)(NSClassFromString(@"UICalloutBar"), NSSelectorFromString(@"activeCalloutBar")) setValue:@"0" forKey:@"m_currentPage"];

But that's unspeakable horrors - so not really usable as well. So please fix this for me, so that http://pspdfkit.com can be better and my customers are happy again :)

Btw, wonder how I found that out? Runtime headers are awesome, and so is Hopper :)

Steps to Reproduce:

I was so nice to make an example, simply start it and follow the instructions above.
So you better not tell me that this is a duplicate :)

Expected Results:

Submenu should start at page 1, not 2.

Notes:

I'm @steipete on Twitter, and I hope some Apple birdies tip me on WWDC 2013 so that I can visit you at the labs again :)

19-Mar-2013 12:13 AM Peter Steinberger:
'UIMenuControllerBug.zip' was successfully uploaded