steps to add tabbarcontroller to AppDelegate using Interface Builder in XCode 4.2 Empty Application template

Question

while I\'m stuck at this question I cannot find the right steps to add a UITabBarController to the AppDelegate (not programatically) but by using interface builder for the \"Emp

Answer 1

Step 1: create new Empty Application template project.
Step 2: add

@property (nonatomic, strong) IBOutlet UITabBarController *tabBarController;
@property (nonatomic, strong) IBOutlet UIWindow *window;

in your app delegate. (dont forget to synthesize these) Step 3: change this line in your app delegate:

@interface AppDelegate : NSObject 

Step 4: modify this method

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
[self.window addSubview:[self.tabBarController view]];
[self.window makeKeyAndVisible];
return YES;
}  

Step 5: create a new empty xib. Drag a tab bar controller on to it as well as an empty object.
Set the empty object's class to AppDelegate. Set Files Owner to UIApplication.

Step 6: drag the 'delegate' property from your files owner on to your appdelegate class and drag the tab bar outlet from you appdelegate class to your tabbarcontroller

Step 7: Add a window and drag the 'window' connection from your appdelegate to the window.

Step 8: Dont forget to go into the project settings and set the main-base nib file to the new xib you created.

Thats it. Hope I didn't miss anything.