This code was being called out of the -viewDidLoad context of the main view. By calling it asynchronously using GCD instead of performing the segue directly, the problem goes away. I'm not sure I would call this a solution. It feels more like a work-around, as I suspect the root cause is some sort of race condition, but it does work.
-Michael On Sep 21, 2012, at 7:31 PM, Michael Crawford wrote: > This problem is kind of tough to describe without pictures. Thus, there will > be links to graphical images to help you understand my dilemma. > > So, I'm trying to display a modal form-sheet over the app's main view using > Storyboards and a segue. I'm using Xcode 4.5 with iOS 6 to implement an iPad > application. I'm also using AutoLayout. I already have a version of this > code working on iOS 5.1 with springs and struts but I want to make the > conversion to AutoLayout as I add support for iOS 6. Don't ask why; stay > focused on the issue at hand, please. > > This is what I'm trying to display. > > https://dl.dropbox.com/u/4920112/1.PNG > https://dl.dropbox.com/u/4920112/2.PNG > https://dl.dropbox.com/u/4920112/3.PNG > > When I activate the segue and try to display the modal form, the form > automatically resizes to cover the lower-left portion of the iPad view. In > the console there are no exceptions due to conflicting constraints. There is > also no reported ambiguity among the constraints in question. > > This is what I'm actually getting. > > https://dl.dropbox.com/u/4920112/4.png > > I added a few breakpoints to execute "po self.view" so I could see how the > view was configured at the following points in the code: > > 1) Start of -viewDidLoad > 2) Context of -viewDidLoad after executing self.view.autoresizingMask = > UIViewAutoresizingNone; > 3) Start of -viewDidAppear > > Here is the output from the console as a result of these three breakpoints: > > 1) (UIView *) $0 = 0x1dd969b0 <UIView: 0x1dd969b0; frame = (0 0; 540 620); > autoresize = RM+BM; autoresizesSubviews = NO; layer = <CALayer: 0x1dd96aa0>> > > 2) (UIView *) $1 = 0x1dd969b0 <UIView: 0x1dd969b0; frame = (0 0; 540 620); > autoresizesSubviews = NO; layer = <CALayer: 0x1dd96aa0>> > > The change from 540x620 to 1024x748 is the problem. > > 3) (UIView *) $2 = 0x1dd969b0 <UIView: 0x1dd969b0; frame = (0 0; 1024 748); > clipsToBounds = YES; autoresize = W+H; autoresizesSubviews = NO; layer = > <CALayer: 0x1dd96aa0>> > > This seems to tell me that the auto-resizing mask is successfully cleared but > then re-instated between the call to -viewDidLoad and -viewDidAppear. Of > course, I'm assuming this is the issue. I cannot assign a constraint to the > main view itself in order to pin width and height. When I select the view, > IB grays out the option. > > Anyone further along on the AutoLayout curve who can give me some suggestions > as to how to prevent my form from being resized once it is loaded? > > -Michael > > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/cocoa-dev/michaelacrawford%40me.com > > This email sent to michaelacrawf...@me.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
