Question

I have created a tabbarcontroller (with its default two view controllers) using interface builder in XCode 4.2.

But, when I run the application, the tab bar seems to be locked and I can’t choose the other tab. Why is that?

PS: I haven’t changed any property of the tab bar or tabbarcontroller in XCode.

Answer 1

Apologies – assumed because you were using XCode 4.2 that you were using storyboards. Perhaps you could try instantiating a tabbar controller fully in code instead of using IB at all. This is how I usually do it….

// Create the main tabbar controller
tabbarController = [[UITabBarController alloc] init];

// Create the first view controller
MyFirstViewController *v1 = [[MyFirstViewController alloc] initWithNibName:@"MyfirstViewController" bundle:nil];
[v1 setTitle:@"Tab1"];

// Create second view controller
MySecondViewController *v2 = [[MySecondViewController alloc] initWithNibName:@"MySecondViewController" bundle:nil];
[v2 setTitle:@"Tab2"];

// Make an array of controllers for the tabbar
NSArray *tabbarControllerArray = [NSArray arrayWithObjects:v1, v2, nil];

// Set the view controllers used by the tabbar controller
[tabbarController setViewControllers:tabbarControllerArray];

// Release views (retained elsewhere)
[v1 release];
[v2 release];

// Add the controller to the subview
[window addSubview:[tabbarController view]];

// Make key and visible
[self.window makeKeyAndVisible];

Give this way a shot and see how you get on.