NSRangeException indexOutOfBound - ios

Question

I am using code that I made in another application. In the other application the code is working fine. What I do is while loading splashViewController the images of slideShow are being downloaded and cached. When the download is finished it will present the mainviewcontroller which is a maintableviewcontroller. Here is the code that I am using:
UIImage* tabBarBackground = [UIImage imageNamed:#"tabBar.png"];
[[UITabBar appearance] setBackgroundImage:tabBarBackground];
UITabBarController *rootViewController = [storyboard instantiateViewControllerWithIdentifier:#"barController"];
UITabBar *tabBar = rootViewController.tabBar;
UITabBarItem *tabBarItem1 = tabBar.items[0];// the error here happening event if i comment out this line the error is hapen at the next uibar items
UIImage *selectedLogo = [[UIImage imageNamed:#"productSelected"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
UIImage *unselectedLogo = [[UIImage imageNamed:#"product"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
[tabBarItem1 setImage:unselectedLogo];
[tabBarItem1 setSelectedImage:selectedLogo];
[tabBarItem1 setTitle:#"My Product"];
UITabBarItem *tabBarItem2 = tabBar.items[1];
UIImage *selectednews = [[UIImage imageNamed:#"notificationSelected"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
UIImage *unselectednews = [[UIImage imageNamed:#"notification"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
[tabBarItem2 setImage:unselectednews];
[tabBarItem2 setSelectedImage:selectednews];
[tabBarItem2 setTitle:#"Notifications"];
UITabBarItem *tabBarItem3 = [tabBar.items objectAtIndex:2];
UIImage *selectedLocation = [[UIImage imageNamed:#"locationSelected"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
UIImage *unselectedLocation = [[UIImage imageNamed:#"location"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
[tabBarItem3 setImage:unselectedLocation];
[tabBarItem3 setSelectedImage:selectedLocation];
[tabBarItem3 setTitle:#"Locate Us"];
UITabBarItem *tabBarItem4 = tabBar.items[3];
UIImage *selectedaboutus = [[UIImage imageNamed:#"moreSelected"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
UIImage *unselectedaboutus = [[UIImage imageNamed:#"more"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
[tabBarItem4 setImage:unselectedaboutus];
[tabBarItem4 setSelectedImage:selectedaboutus];
[tabBarItem4 setTitle:#"More"];
[self.loadingActivityIndicator stopAnimating];
[self.navigationController popToRootViewControllerAnimated:YES];
[self presentViewController:rootViewController animated:YES completion:nil];

Answer 1

Please put a count check for tabbar.items first and then access all tab bar items :
if(tabbar.items.count==tabCount) //tabCount is number of tabs in your tabbar
{
UITabBarItem *tabBarItem1 = tabBar.items[0];
//<remaining code>
}else
{
//either tabbar is nil or tabbar doesn't not have any tabs, so handle accordingly
}
Also, since the tabbar is working fine in another application, please check your StoryBoard if it correctly creates and binds the tabbar for the rootViewController.
Here is a good post with detailed steps to create tabbar correctly using Storyboards which can help you debug/verify if you created the bindings and segues correctly:
https://guides.codepath.com/ios/Using-Tab-Bar-Controllers