UITabBarController not responding

I'm using a UITabBarController with UINavigationControllers like this

enter image description here

I add this to the view using

tabctrl.view.frame = CGRectMake(0, 0, 320, 548);
[self.view addSubview:tabctrl.view];

The screen looks like

enter image description here

But I can't switch to other tab(ie, touching on tabctrl's tab has no response)

If I change the frame like

tabctrl.view.frame = CGRectMake(0, 0, 320, 488);

then the screen looks like,

enter image description here

Now, I can touch the tab and switch to required viewcontroller. How to solve this issue?

I need to get access to the tabctrl when its frame height is 568.

I'm using xcode 4.6.2 and ios simulator 4inch retina.

Solution

Your tabbar controller might be behind something else on the bottom of the screen. You can test it with code:

[self.view bringSubviewToFront: tabctrl]

If this fixes your problem, try to find which view is in front of your tabbar controller