iphone app doesn't respond after starting in landscape orientation on iPad

14
votes

My iPhone app doesn't respond when launched on an iPad in landscape mode.

If it launches in portrait mode everything works fine. In landscape orientation nothing works until the app is rotated or the 1x 2x button is pressed.

I've tried debugging the app with breakpoints and stepping through the code but it shows that the app is running normally in the debug console.

2
iosobjective-cipaduiviewcontroller
In addition to the "supported interface orientations" work-around, Greg Hewgill and I also discovered that hiding the status bar during launch will fix it, too. Makes no sense to me, but they both work. See my updated answer. - Rob

2 Answers

12
votes

I have found that this is unique to iOS 6 devices, but if you remove all of the entries under "Supported interface orientation" in the app's plist, this problem goes away. Or if you check the "Hide during application launch" option for the "Status Bar" settings on the Summary screen of the Target settings, this also fixes it:

hide during application launch

There's no logical reason that I can see that either of these options should fix this bug, but they both do.

If you play around with the supported orientation settings in iOS 6, you can still programmatically control the permitted interface orientations via supportedInterfaceOrientations (or in iOS 5, you can still use theshouldAutorotateToInterfaceOrientation: method).

2
votes

It seems that just adding [[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:UIStatusBarAnimationNone]; at the beginning of didFinishLaunchingWithOptions: function does the trick. No need to change the plist settings file.