The tab bar for this project isn`t showing up, instead it just shows a black screen.This tab bar is enter in pragmatically in application launch in app delegate.
main_tab=[[UITabBarController alloc]init];
viewcontroller = [[HomeViewController alloc]init];
viewcontroller.title =#"Home";
UINavigationController *nav =[[UINavigationController alloc]initWithRootViewController:viewcontroller];
viewcontroller1 = [[SearchViewController alloc]init];
viewcontroller1.title =#"Search";
UINavigationController *nav1 =[[UINavigationController alloc]initWithRootViewController:viewcontroller1];
tabs_array=[[NSArray alloc]initWithObjects:nav,nav1, nil];
main_tab.viewControllers=tabs_array;
[self.window addSubview:main_tab.view];
[self.window makeKeyAndVisible];
return YES;
Try replacing this line
[self.window addSubview:main_tab.view];
With this
self.window.rootViewController = main_tab;
Related
TabBar should not be enable any of tabs untill user clicked on any one of tab,
Below is the code I write to display tab bar, But the problem by defaultly it is showing the first tab.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
PeopleViewController *peopleViewController = [[PeopleViewController alloc] init];
UINavigationController *nav1 = [[UINavigationController alloc] initWithRootViewController:peopleViewController];
[peopleViewController setTitle:#"People"];
EventsViewController *eventsViewController = [[EventsViewController alloc] init];
UINavigationController *nav2 = [[UINavigationController alloc]initWithRootViewController:eventsViewController];
[eventsViewController setTitle:#"Events"];
ActiveViewController *activeViewController = [[ActiveViewController alloc] init];
UINavigationController *nav3 = [[UINavigationController alloc]initWithRootViewController:activeViewController];
[activeViewController setTitle:#"Active"];
MoreViewController *moreViewController = [[MoreViewController alloc] init];
UINavigationController *nav4 = [[UINavigationController alloc] initWithRootViewController:moreViewController];
[moreViewController setTitle:#"More"];
NSArray *arrViewControllers = [[NSArray alloc] initWithObjects:nav1,nav2,nav3,nav4, nil];
[tabBarController setViewControllers:arrViewControllers];
[self.window addSubview:tabBarController.view];
return YES;
}
Create an IBOutlet for the tab bar (e.g. theTabBar) and use following code:
[theTabBar setSelectedItem:nil];
This is default behavior of UITabBarController, by default first tab is selected.
You have the option to make some other tab to be selected at first instance, but cannot change the default selected to null.
[tabBarController setSelectedIndex:0];
By default selected index is 0, this is first tab, you can change it as per your requirement to 1,2,3.
Basically i cant get to display all tabBar Items when i run my app, just the first view controller is displayed:
I literally have to click on a tab to display its Item:
This my code in Appdelegate.m:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
// Initialize window
self.window = [[UIWindow alloc] initWithFrame:UIScreen.mainScreen.bounds];
// Set background colors for both NavBar and TabBar
[[UINavigationBar appearance] setBarTintColor:[UIColor colorWithRed:0.157 green:0.718 blue:0.553 alpha:1]];
[[UITabBar appearance] setBarTintColor:[UIColor colorWithRed:0.141 green:0.216 blue:0.263 alpha:1]];
// Initialize your five tab controllers. with each tab has its own navigation controller
HomePageView *homePageView = [[HomePageView alloc]init];
UINavigationController *nav1 = [[UINavigationController alloc]initWithRootViewController:homePageView];
ProfileViewController *profileViewController=[[ProfileViewController alloc]init];
UINavigationController *nav2 = [[UINavigationController alloc]initWithRootViewController:profileViewController];
FeedViewController *feedViewController=[[FeedViewController alloc]init];
UINavigationController *nav3 = [[UINavigationController alloc]initWithRootViewController:feedViewController];
ListeningSessionViewController *listeningSessionViewController= [[ListeningSessionViewController alloc]init];
UINavigationController *nav4 = [[UINavigationController alloc]initWithRootViewController:listeningSessionViewController];
RecievedViewController *recievedViewController =[[RecievedViewController alloc]init];
UINavigationController *nav5 = [[UINavigationController alloc]initWithRootViewController:recievedViewController];
// initialize tabbarcontroller,set your viewcontrollers and change its color.
self.tabC = [[UITabBarController alloc]init];
NSArray* controllers = [NSArray arrayWithObjects: nav1,nav2,nav3,nav4,nav5, nil];
[self.tabC setViewControllers: controllers animated:NO];
[_window addSubview:self.tabC.view];
// Show window
[self.window makeKeyAndVisible];
return YES;
}
I'm guessing that you're setting the titles in the viewDidLoad or viewDidAppear methods of the controllers. That won't work, because, while all the controllers are instantiated in the app delegate, only the controller at index 0 has its view loaded, and thus viewDidLoad will not be run for the other controllers. Instead, you should set the titles on the navigation controllers in the app delegate,
ProfileViewController *profileViewController=[[ProfileViewController alloc]init];
UINavigationController *nav2 = [[UINavigationController alloc]initWithRootViewController:profileViewController];
nav2.tabBarItem.title = #"Profile";
I'm having an LoginViewController which is the RootViewController. This ViewController should not have the TabBar included. The Rest of the ViewController should contain the UITabBar, But it is not showing. If i make the tabBar the rootController it will show the tabBar in the viewcontrollers. This would also make the firsttab the rootviewcontroller which it should not.
My question is then how can i make the loginview the rootViewController without an tabBar and still show the tabBar in the other viewcontrollers?
My code:
tabBarController = [[UITabBarController alloc] init];
MenuViewController *firstTab = [[MenuViewController alloc] initWithNibName:#"MenuViewController" bundle:nil];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:firstTab];
FixtureViewController *secondTab = [[FixtureViewController alloc] initWithNibName:#"FixtureViewController" bundle:nil];
UINavigationController *navController2 = [[UINavigationController alloc] initWithRootViewController:secondTab];
WorldCupViewController *thirdTab = [[WorldCupViewController alloc] initWithNibName:#"WorldCupViewController" bundle:nil];
UINavigationController *navController3 = [[UINavigationController alloc] initWithRootViewController:thirdTab];
LoginViewController *loginView = [[LoginViewController alloc] initWithNibName:#"LoginViewController" bundle:nil];
UINavigationController *navController4 = [[UINavigationController alloc] initWithRootViewController:loginView];
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = #[navController, navController2, navController3];
navController.tabBarItem.image = [UIImage imageNamed:#"message-7"];
navController2.tabBarItem.image = [UIImage imageNamed:#"football-32"];
navController3.tabBarItem.image = [UIImage imageNamed:#"trophy-32"];
[[UITabBar appearance] setTintColor:[UIColor colorWithRed:110/255.0f green:89/255.0f blue:196/255.0f alpha:1.0f]];
[self.window setRootViewController:navController4];
[self.window makeKeyAndVisible];
What you need to do is transition the application from the LoginViewController to the Tabbar. What I would suggest doing is replacing the LoginViewController with the TabBar as the rootViewController.
Here is some sample code, perform this action in your AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
LoginViewController *loginView = [[LoginViewController alloc] initWithNibName:#"LoginViewController" bundle:nil];
UINavigationController *navController4 = [[UINavigationController alloc] initWithRootViewController:loginView];
[self.window setRootViewController:navController4];
[self.window makeKeyAndVisible];
return YES;
}
-(void)transitionToTabBar
{
// Set the TabBar how you are in your sample code, this is just an example.
[self.window setRootViewController:[[UITabBarController alloc] initWithNibName:#"SomeNib" bundle:Nil]];
[UIView transitionWithView:self.window duration:0.5f options:UIViewAnimationOptionTransitionCurlDown animations:^{
[self.window makeKeyAndVisible];
} completion:nil];
}
You should use main View controller (for MenuViewController) and by using segue you can present another view controller which has TabBar in it.
I am making an application but I'm still a beginner and I'm trying to get used to the RootViewController and how it should be set.
At the beginning my application launches, I want there to be a View which is not in my tabBarController (which is set to be my rootViewController).
What I am trying to ask is, Can I have another view which is outside my UITabBarController launch first without it being in the tabBarController's items list?
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
FacebookFeedViewController *facebookClass = [[FacebookFeedViewController alloc] initWithNibName:#"FacebookFeedViewController" bundle:nil];
TwitterFeedViewController *twitterClass = [[TwitterFeedViewController alloc] initWithNibName:#"TwitterFeedViewController" bundle:nil];
LinkedInFeedViewController *linkClass = [[LinkedInFeedViewController alloc] initWithNibName:#"LinkedInFeedViewController" bundle:nil];
FTLFullFeedViewController *masterClass = [[FTLFullFeedViewController alloc] initWithNibName:#"FTLFullFeedViewController" bundle:nil];
/// tab button title
facebookClass.title = #"Facebook";
twitterClass.title = #"Twitter";
linkClass.title=#"LinkedIn";
masterClass.title=#"FTL";
// tab button Images
facebookClass.tabBarItem.image = [UIImage imageNamed:#"facebook_32"];
twitterClass.tabBarItem.image = [UIImage imageNamed:#"twitter_32"];
WelcomeViewController *welcomeClass= [[WelcomeViewController alloc] initWithNibName:#"WelcomeViewController" bundle:nil];
navController = [[ UINavigationController alloc] initWithRootViewController:welcomeClass];
UINavigationController *navController2 = [[UINavigationController alloc] initWithRootViewController:facebookClass];
UINavigationController *navController3 = [[UINavigationController alloc] initWithRootViewController:twitterClass];
UINavigationController *navController4 = [[UINavigationController alloc] initWithRootViewController:linkClass];
UINavigationController *navController5 = [[UINavigationController alloc] initWithRootViewController:masterClass];
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:navController,navController5,navController2,navController3,navController4,nil];
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
return YES;
}
I know you already selected an answer but all that's doing is pushing a UITabBar view on top of an existing view, not creating a new UITabBarController view. Based on our brief conversation (latest XCode, no StoryBoards, using XIBs) you're going to want to create a xib as a UITabBarController then push it into view...
View *view = [[View alloc] initWithNibName:#"myUITabBarXIB" bundle:nil];
view.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController: view animated:YES];
This will present your XIB file but not on top of the existing view controller when the desired action takes place.
yes! ofcourse you do.
[self.view addsubview:yourTabbar.view];
Hope this will help you.
I'm trying to add a UINavigationController to my existing view controller by adding this in ViewDidLoad:
- (void)viewDidLoad
{
[super viewDidLoad];
navController = [[UINavigationController alloc]init];
[self.view addSubview:navController.view];
}
But by doing it this way, it completely blocks my view. It puts a UINavigationBar on the top but the rest of the view doesn't respond to input.
This is how I am presenting the view. The SecondViewController is the one I want to have a NavController:
UITabBarController *tabController = [[UITabBarController alloc] init];
FirstViewController *viewController1 = [[FirstViewController alloc] initWithNibName:#"CardsViewController" bundle:nil];
UITabBarItem *tab1 = [[UITabBarItem alloc] initWithTitle:#"First"
image:[UIImage imageNamed:#"img1.png"] tag:1];
[viewController1 setTabBarItem:tab1];
SecondViewController *viewController2 = [[SecondViewController alloc] initWithNibName:#"ShoppingViewController" bundle:nil];
UINavigationController *SecondViewNavCont = [[UINavigationController alloc]initWithRootViewController:viewController2];
UITabBarItem *tab2 = [[UITabBarItem alloc] initWithTitle:#"Second"
image:[UIImage imageNamed:#"img2.png"] tag:2];
[SecondViewNavCont setTabBarItem:tab2];
UIViewController *viewController3 = [[UIViewController alloc] init];
UITabBarItem *tab3 = [[UITabBarItem alloc] initWithTitle:#"Third"
image:[UIImage imageNamed:#"img3.png"] tag:3];
[viewController3 setTabBarItem:tab3];
tabController.viewControllers = [NSArray arrayWithObjects:viewController1,
viewController2,
viewController3,
nil];
[self.view addSubview:tabController.view];
You cannot add it to the current view controller
What you need to do is instead of presenting the ViewController is to add this viewcontroller to the navigationview controller and present that
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:YourPresentedViewController];
//then present the navController
[self presentModalViewController:navController animated:YES];
Now when you present it do the following
NSArray arrayWithObjects:viewController1,
SecondViewNavCont,
viewController3,
nil];
You can try this code for load uiviewcontroller to uinavigationcontroller:
yourviewController *viewcontroller=[[yourviewController alloc] initWithNibName:#"yourviewController" bundle:nil];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:viewcontroller];
[self presentModalViewController:navController animated:YES];
(or) you want to load uinavigationcontroller in application startup try below code in your application delegate class:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:viewcontroller.view];
[self.window addSubview:navController.view];
[self.window makeKeyAndVisible];
return YES;
}
Welcome!
You need to set the RootViewController for the navController object. Then further you can push UIViewcontroller objects using pushViewController method.
You need to add a view for that Navigation Controller. The added Navigation Controller has no view so it was overlaying on the UIViewController
You need to add
[[UINavigationController alloc] initWithNibName:#"ViewControllerName" bundle:nil];