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    <p>Create tabBarController in your didFinishLaunching, but show it only after you show your first 4 screens without TabBar. This is a default didFinishLaunching, that is generated by Xcode when you chose standart TabBar app template: </p> <pre><code>- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions: (NSDictionary *)launchOptions { self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; // Override point for customization after application launch. UIViewController *viewController1 = [[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil]; UIViewController *viewController2 = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil]; self.tabBarController = [[UITabBarController alloc] init]; self.tabBarController.viewControllers = @[viewController1, viewController2]; self.window.rootViewController = self.tabBarController; [self.window makeKeyAndVisible]; return YES; } </code></pre> <p>Here you should replace this line: </p> <pre><code>self.window.rootViewController = self.tabBarController; </code></pre> <p>with your line of showing your controller. Something like this: </p> <pre><code>LoginViewController *loginViewController = [[LoginViewController alloc] initWithNibName:@"LoginViewController" bundle:nil]; loginViewController.delegate = self; self.window.rootViewController = loginViewController; </code></pre> <p>Then, when you remove your last screen and want to show the tab bar, write this: </p> <pre><code>AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate]; appDelegate.window.rootViewController = self.tabBarController; </code></pre> <p>The main idea is that you just <strong>change the rootViewController of your app window</strong>. </p>
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    1. POImplement TabBar Application
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    1. USwzbozon
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    1. COno its not working
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    2. COChanging rootViewController worked for me, it's not an improvisation. I show login screen, then a TabBar controller.
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    3. COwhere to write appdelegate.window.rootviewcontroller=self.tabbarcontroller??? In the specific view controller or in appdelegate.m??
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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