How to disable/enable a particular UITabBar Item,

Question

I have 3 tabs in my UITabbarController, that I created in my Appdelegate.

When I open the app, I have made the selected tabbarItem the third tabbarItem.

The user can only select the UITabBarItem at Index 0, when he is logged in.

I tried every thing to restrict the user from going to TabBarItem_0 when he is at TabBarItem_2. But nothing worked. I used

- (BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController
{

}

But it's not working as I desired. I checked the stackoverflow and found almost the same question, where I found this delegate. But this is not working for me as desired. I googled, but couldn't find any solution other than stackoverflows links, which didn't help this time.

On the click of that disabled TabBar Item, I have to show a pop up. How can I implement that, too?

Answer 1

You can do this in your code

- (void)viewDidLoad {
    ...
    [self checkLogin];
    ...
}

- (void)checkLogin {
    if (!loggedIn) {
        [[[[self.tabBarController tabBar]items]objectAtIndex:0]setEnabled:NO];
    } else {
        [[[[self.tabBarController tabBar]items]objectAtIndex:0]setEnabled:YES];
    }
}

- (void)tapLogin {
  // Do the login action
}

- (void)processLoginResult {
  // Process the result of the login action
  // If the result is success, set 'loggedIn = YES'
  // Otherwise, set 'loggedIn = NO'
  ...
  [self checkLogin];
  ...
}

Answer 2

If you want to do it with the Storyboard, simply selected the TabBarItem in the destination view controller scene and uncheck the Enabled box.