IOS login required for certain tabs with storyboard

Question

My question is based on the following question, but my case is reversed.

Example for login screen modally based on storyboard

I would like to have a few tabs private for users only so required login, my storyboard is below: enter image description here

Below is my code in custom tabBarController

@interface PNTabBarController ()

@end

@implementation PNTabBarController

- (void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item
{
    NSUInteger indexOfTab = [tabBar.items indexOfObject:item];
    NSLog(@"%lu", (unsigned long)indexOfTab);
    if (indexOfTab == 2 || indexOfTab == 3) {
        PFUser *currentUser = [PFUser currentUser];
        NSLog(@"%@", currentUser.username);
        if(currentUser == nil){          
            PNLoginViewController *obj = [[PNLoginViewController alloc]init];
            [self presentViewController:obj animated:YES completion:NULL];
        }
        else{
            NSLog(@"%@", currentUser.username);
        }
    }
}

But what happens is a dark screen when I click the 2 or 3 tab. What should be the correct way to achieve this?

`if(currentUser == nil){ NSLog(@"%@", currentUser.username);` ... logic problem? — Raptor, Mar 03 '14 at 03:28
Yes you are right, thanks for reminding my careless mistake. — Patrick Ng, Mar 03 '14 at 03:30
Clarification needed: is `PNLoginViewController` not appearing & dark screen shown instead? — Raptor, Mar 03 '14 at 03:45
@ShivanRaptor Yes the PNLoginViewController is not appearing only dark screen shown — Patrick Ng, Mar 03 '14 at 03:51
As you use Storyboard, you should use `instantiateViewControllerWithIdentifier:` instead. — Raptor, Mar 03 '14 at 03:52
@Akhilrajtr what is the difference between initWithNibName and init, and what should I pass in the NSString? — Patrick Ng, Mar 03 '14 at 03:53
extra information: for non-Storyboard user / would like to call a XIB separately, use `initWithNibName:` call. The parameter is the XIB file name without the extension; rarely use these days after storyboard becomes mainstream. — Raptor, Mar 03 '14 at 04:40

IOS login required for certain tabs with storyboard

0 Answers0