Finding the currently visible view in a UITabBarController

curvisview.m

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
	// Firstly, we want to figure out who is the currently visible view controller.
	// There are 4 possibilities here:
	// 1- They could be a non-nav controller, with a visible tab (ie not under the 'more' tab) 
	//    Simple: self.selectedViewController
	// 2- They could be a nav controller, with a visible tab (ie not under the 'more' tab)
	//    Get it's visible view: self.selectedViewController.visibleViewController
	// 3- They could be a non-nav controller, under the 'more' tab
	//    Simple: self.selectedViewController
	// 4- They could be a nav controller, under the 'more' tab
	//    This is where it gets tricky (or buggy, really? You decide.)
	//    What UIKit does is: its sets the self.selectedViewController to your nav controller, but steals the root view and
	//    pushes it onto the self.moreNavigationController's stack
	//    So if your self.selectedViewController.viewControllers is empty, use self.moreNavigationController.visibleViewController
	
	UIViewController *visible = self.selectedViewController; // For non-nav controllers
	if ([visible respondsToSelector:@selector(visibleViewController)]) // For nav controllers
		visible = [((UINavigationController*)visible) visibleViewController];
	if (!visible) // Exception for nav controllers under the more tab
		visible = self.moreNavigationController.visibleViewController;
	
	return [visible shouldAutorotateToInterfaceOrientation:interfaceOrientation];
}

Thanks! I really appreciate your patience and willingness to indulge me here in the comments.

As for that blog post, yep, that's how I arrived here. It's this one, right?

The thing that's got me confused now is that visibleController shouldn't work (at least certainly not on iOS 5, with those two private VCs that Apple exposes in there), but that's what you use in your code ... unless Apple changed something subtle as of iOS 5.

No worries :) Yeah i've got no idea about whether things have changed in ios5 to be honest. And really, if you've got a 'more' tab in your tab view, you probably should pare your app down somewhat anyway. Anyway good luck finding a solution that works!

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On Thu, May 10, 2012 at 11:05 PM, Joe D'Andrea < ***@***.*** > wrote: Thanks! I really appreciate your patience and willingness to indulge me here in the comments. As for that blog post, yep, that's how I arrived here. It's <a href=" http://splinter.com.au/finding-the-currently-visible-view-in-a-uitab">this one</a>, right? The thing that's got me confused now is that visibleController shouldn't work (at least certainly not on iOS 5, with those two private VCs that Apple exposes in there), but that's what you use in your code ... unless Apple changed something subtle as of iOS 5. --- Reply to this email directly or view it on GitHub: https://gist.github.com/990371

Thanks, and you're 100% correct - I want to lose that More tab so badly, you have no idea.