IOS: Adding viewcontroller to custom TabBar in ios - ios

Question

i am working on a chat project in which i have to use a UITabBar. I am using storyboard in this project but according to requirement i added custom TabBar in project to mount it on the top of the view.
Now the problem is Custom TabBar is showing well on the top of view but when i click on the tabs it only shows black screen instead of showing the ViewControllers.
i am sharing my code please suggest me the solution of it.
my .h file
#interface TabBar : UITabBarController
{
}
#property(strong,nonatomic) UITabBarController *tabbarcontroller;
#property(strong,nonatomic) ChatListVC *chatlist;
#property(strong,nonatomic) ContactListVc *contactlist;
#property(strong,nonatomic) FindfriendsVC *findfriends;
#end
my .m file
#implementation TabBar
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
// self.navigationItem.hidesBackButton=YES;
self.title = #"Chat Home Page";
self.navigationController.navigationBar.backgroundColor = [UIColor blueColor];
_chatlist = [ChatListVC new];
_contactlist = [ContactListVc new];
_findfriends = [FindfriendsVC new]; //initWithNibName:#"FindfriendsVC" bundle:nil];//[FindfriendsVC new];
self.tabbarcontroller = [[UITabBarController alloc]init];
self.viewControllers = [NSArray arrayWithObjects:_chatlist,_contactlist,_findfriends, nil];
//self.navigationController.navigationBar.frame.size.height;
//UITabBar *tabBar = self.tabBarController.tabBar;
//CGFloat topBarOffset = self.topLayoutGuide.length;
self.tabBar.frame =CGRectMake(0,44,self.view.frame.size.width,50);
UITabBarItem *item0 = [self.tabBar.items objectAtIndex:0];
UITabBarItem *item1 = [self.tabBar.items objectAtIndex:1];
UITabBarItem *item2 = [self.tabBar.items objectAtIndex:2];
item0.title = #"Chat List";
item1.title = #"Contacts";
item2.title = #"Find Friends";
[item0 setFinishedSelectedImage:[UIImage imageNamed:#"chatlist.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"chatlist.png"]];
[item1 setFinishedSelectedImage:[UIImage imageNamed:#"contacts.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"contacts.png"]];
[item2 setFinishedSelectedImage:[UIImage imageNamed:#"findfriends.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"findfriends.png"]];
}
snapshot of the output is

Answer 1

It looks like your view controllers aren't being initialised properly.
If your view controllers are all in the Storyboard, try replacing
_chatlist = [ChatListVC new];
_contactlist = [ContactListVc new];
_findfriends = [FindfriendsVC new];
with:
_chatlist = [[UIStoryboard storyboardWithName:#"Main" bundle:nil] instantiateViewControllerWithIdentifier:#"ChatListIdentifier"];
_contactlist = [[UIStoryboard storyboardWithName:#"Main" bundle:nil] instantiateViewControllerWithIdentifier:#"ContactListIdentifier"];
_findfriends = [[UIStoryboard storyboardWithName:#"Main" bundle:nil] instantiateViewControllerWithIdentifier:#"FindfriendsIdentifier"];
Where the identifier string is your own identifier that you have set up in the Storyboard.