I am unable to set a certain tab view to be a UiNavigation controller. The warning I get is:
Pushing a navigation controller is not supported
Here is my 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, *viewController2, *viewController3, *viewController4;
viewController1 = [[HomeViewController alloc] initWithNibName:#"HomeViewController_iPhone" bundle:nil];
viewController2 = [[SearchViewController alloc] initWithNibName:#"SearchViewController_iPhone" bundle:nil];
viewController3 = [[ListViewController alloc] initWithNibName:#"ListViewController_iPhone" bundle:nil];
viewController4 = [[InfoViewController alloc] initWithNibName:#"InfoViewController_iPhone" bundle:nil];
self.tabBarController = [[UITabBarController alloc] init];
UINavigationController * listNavController = [[UINavigationController alloc] initWithRootViewController:viewController3];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, listNavController, viewController4, nil];
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
return YES;
}
self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, listNavController, viewController4, nil];
to
self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, viewController3, viewController4, nil];
and keep a reference to the nav controller if needed. I think that would be the right way to do it, but you could also wrap the nav controller in a simple UIViewController. You would want to do this if viewController3 is not guaranteed to be the bottom most VC in your stack at all times.
Related
I am unable to get the navigation bar to show the title that I specify. I have tried to change the title in the AppDelegate.m, as well as in the viewDidLoad of my first tab view. I suspect the title is being hidden, but I am unable fix it. Please provide any insight you may have.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];
navigationController = [[UINavigationController alloc] initWithNavigationBarClass:[CRGradientNavigationBar class] toolbarClass:nil];
UIColor *firstColor = [UIColor colorWithRed:155.0f/255.0f green:41.0f/255.0f blue:104.0f/255.0f alpha:1.0f];
UIColor *secondColor = [UIColor colorWithRed:215.0f/255.0f green:90.0f/255.0f blue:18.0f/255.0f alpha:1.0f];
NSArray *colors = [NSArray arrayWithObjects:firstColor, secondColor, nil];
[[CRGradientNavigationBar appearance] setBarTintGradientColors:colors];
self.navigationController.title = #"This title is not showing";
[[navigationController navigationBar] setTranslucent:NO];
//create the view controller for the first tab
self.firstViewController = [[FirstViewController alloc] initWithNibName:nil
bundle:NULL];
//create the view controller for the second tab
self.secondViewController = [[SecondViewController alloc] initWithNibName:nil
bundle:NULL];
//create the view controller for the third tab
self.thirdViewController = [[ThirdViewController alloc] initWithNibName:nil
bundle:NULL];
//create the view controller for the fourth tab
self.fourthViewController = [[FourthViewController alloc] initWithNibName:nil
bundle:NULL];
//create an array of all view controllers that will represent the tab at the bottom
NSArray *myViewControllers = [[NSArray alloc] initWithObjects:
self.firstViewController,
self.secondViewController, self.thirdViewController, self.fourthViewController, nil];
//initialize the tab bar controller
self.tabBarController = [[MainUITabBarController alloc] init];
//set the view controllers for the tab bar controller
[self.tabBarController setViewControllers:myViewControllers];
[navigationController setViewControllers:#[self.tabBarController]];
[self.window setRootViewController:navigationController];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;
}
The relationship of your view controllers isn't right.
The root view controller of your app should be the TabBarController.
Each of the items should have it's own Navigation Controller.
The title of each ViewController can be set in viewDidLoad() with self.title = "....
I've been able to set titles in the delegate as follows:
1.) Create view controllers
2.) Set those titles
3.) Then create UINavigationControllers and assign view controllers there
self.firstViewController = [[FirstViewController alloc] initWithNibName:nil bundle:nil];
self.secondViewController = [[SecondViewController alloc] initWithNibName:nil bundle:nil];
self.thirdViewController = [[ThirdViewController alloc] initWithNibName:nil bundle:nil];
self.fourthViewController = [[FourthViewController alloc] initWithNibName:nil bundle:nil];
[self.firstViewController setTitle:#"First"];
[self.secondViewController setTitle:#"Second"];
[self.thirdViewController setTitle:#"Third"];
[self.fourthViewController setTitle:#"Fourth"];
UINavigationController *controller1 = [[UINavigationController alloc] initWithRootViewController:self.firstViewController];
UINavigationController *controller2 = [[UINavigationController alloc] initWithRootViewController:self.secondViewController];
UINavigationController *controller3 = [[UINavigationController alloc] initWithRootViewController:self.thirdViewController];
UINavigationController *controller4 = [[UINavigationController alloc] initWithRootViewController:self.fourthViewController];
NSArray *viewControllers = [NSArray arrayWithObjects:controller1, controller2, controller3, controller4, nil];
Following is my code and it is showing tab bar only on given 2 tab bar items but it is not showing tab bar in other views.
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.startQuizViewController = [[StartQuizViewController alloc] initWithNibName:nil bundle:nil];
self.scoreViewController = [[ScoreViewController alloc] initWithNibName:nil bundle:nil];
self.startQuizViewController.title = #"QUIZ";
self.scoreViewController.title = #"SCORES";
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:self.startQuizViewController,self.scoreViewController,nil];
_navigationController=[[UINavigationController alloc]initWithRootViewController:self.tabBarController];
[self.window addSubview:self.navigationController.view];
self.window.rootViewController = self.navigationController;
[self.window makeKeyAndVisible];
return YES;
code in written in didFinishLaunchingWithOptions in AppDelegate.m.
change this part:
_navigationController=[[UINavigationController alloc]initWithRootViewController:self.tabBarController];
[self.window addSubview:self.navigationController.view];
self.window.rootViewController = self.navigationController;
to this:
self.window.rootViewController = self.tabBarController;
you cannot have tabbarcontroller inside a navigation controller. so just remove navigation controller and set tab bar controller as root view controller
edit:
self.startQuizViewController = [[StartQuizViewController alloc] initWithNibName:nil bundle:nil];
self.scoreViewController = [[ScoreViewController alloc] initWithNibName:nil bundle:nil];
self.startQuizViewController.title = #"QUIZ";
self.scoreViewController.title = #"SCORES";
self.tabBarController = [[UITabBarController alloc] init];
UINavigationController * nav1 = [[UINavigationController alloc] initWithRootViewController:self.startQuizViewController];
UINavigationController * nav2 = [[UINavigationController alloc] initWithRootViewController:self.scoreViewController];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:nav1, nav2, nil];
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
that's it. you can now push view controller inside those controller and can have the tab bar always there.
Use this
UIViewController *viewController1, *viewController2;
viewController1 = [[UIViewController alloc] initWithNibName:#"FirstViewController" bundle:nil] ;
UINavigationController *navigationcontroller = [[UINavigationController alloc] initWithRootViewController:viewController1] ;
viewController2 = [[UIViewController alloc] initWithNibName:#"SecondViewController" bundle:nil] ;
UINavigationController *navigationcontroller2 = [[UINavigationController alloc] initWithRootViewController:viewController2] ;
self.tabBarController.viewControllers = [NSArray arrayWithObjects:navigationcontroller, navigationcontroller2, nil];
and finally
self.window.rootViewController = self.tabBarController;
This way you have seperate navigation controllers for both tabbar controller.
I have tried to add a navigation controller to a tab bar controller but the tab appear black.
My code:
AppDelegate.m
#import "SettingsNavigationControllerViewController.h"
#import "SettingsViewController.h"
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
UIViewController *viewController1, *viewController2, *viewController3;
SettingsNavigationControllerViewController *viewController4;
UINavigationController *navigationController = [UINavigationController alloc];
viewController1 = [[FirstViewController alloc] initWithNibName:#"FirstViewController" bundle:nil];
viewController2 = [[SecondViewController alloc] initWithNibName:#"SecondViewController" bundle:nil];
viewController3 = [[ShareViewController alloc] initWithNibName:#"ShareViewController" bundle:nil];
SettingsViewController *settingViewController = [[SettingsViewController alloc] initWithNibName:#"SettingsViewController" bundle:nil];
viewController4 = [[SettingsNavigationControllerViewController alloc] initWithRootViewController:settingViewController];
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = #[viewController1, viewController2, viewController3, navigationController];
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
return YES;
}
thank you in advance
This is because you added a navigationcontroller with no RootViewController and even doesnt initialized. Thats why the view appears as black. May be you mean to add viewController4 instead of navigationController . So change your code as below
self.tabBarController.viewControllers = #[viewController1, viewController2, viewController3, viewController4];
You need to first create the navigation controllers with rootviewcontrollers
viewController1 = [[FirstViewController alloc] initWithNibName:#"FirstViewController" bundle:nil];
UINavigationController *navigationController1 = [[UINavigationController alloc] initWithRootViewController:viewController1];
viewController2 = [[SecondViewController alloc] initWithNibName:#"SecondViewController" bundle:nil];
UINavigationController *navigationController2 = [[UINavigationController alloc] initWithRootViewController:viewController2];
Then instantiate the Tab Bar controller like this
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:navigationController1, navigationController2, nil];
Create Navigation Controllers first.
UINavigationController *nav1 = [[UINavigationController alloc] init];
UIViewController *viewController1 = [[[FirstSteps alloc] initWithNibName:#"FirstView" bundle:nil] autorelease];
nav1.viewControllers = [NSArray arrayWithObjects:viewController1, nil];
UINavigationController *nav2 = [[UINavigationController alloc] init];
UIViewController *viewController2 = [[[Profiles alloc] initWithNibName:#"SecondView" bundle:nil] autorelease];
nav2.viewControllers = [NSArray arrayWithObjects:viewController2, nil];
Then initialize your tabbar controller like this.
self.tabBarController = [[[UITabBarController alloc] init] autorelease];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:nav1,nav2 ,nil];
self.window.rootViewController=self.tabBarController;
Hope this helps you.
Hey mate please visit the below link for tab bar example.
I think this is good and nice example which would be helpful to you.
https://github.com/alikaragoz/AKTabBarController
You only have to set your controllers name in appDelegate.m file
Here my code:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
CSDisplayPlaza *displayPlaza = [[CSDisplayPlaza alloc] initWithNibName:#"CSDisplayPlaza" bundle:nil];
[displayPlaza setTabBarItem:[[UITabBarItem alloc] initWithTitle:#"one" image:[UIImage imageNamed:#"displayPlaza"] tag:0]];
UINavigationController *displayPlazaNav = [[UINavigationController alloc] initWithRootViewController:displayPlaza];
CSGameHall *gameHall = [[CSGameHall alloc] initWithNibName:#"CSGameHall" bundle:nil];
[gameHall setTabBarItem:[[UITabBarItem alloc] initWithTitle:#"two" image:[UIImage imageNamed:#"displayPlaza"] tag:1]];
UINavigationController *gameHallNav = [[UINavigationController alloc] initWithRootViewController:gameHall];
CSMyInformation *myInformation = [[CSMyInformation alloc] initWithNibName:#"CSMyInformation" bundle:nil];
[myInformation setTabBarItem:[[UITabBarItem alloc] initWithTitle:#"three" image:[UIImage imageNamed:#"myInformation"] tag:2]];
UINavigationController *myInformationNav = [[UINavigationController alloc] initWithRootViewController:myInformation];
self.tabBarController = [[UITabBarController alloc] init];
[tabBarController setViewControllers:[NSArray arrayWithObjects:displayPlazaNav,gameHallNav,myInformationNav,nil]];
[tabBarController setSelectedViewController:displayPlazaNav];
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
return YES;
}
In the simulator, cannot display any view controllers. Just a empty tabbar in my simulator. I don't know what happen.
My guess is displayPlaza is nil for some reason. Add log messages after you create every object to verify you in fact created one, and also the tab bar controllers array.
How to insert UINavigationController inside UITabBarController.
Currently I have main UITabBarController with declatarion inside application delegate like this (so tab is main)
self.window.rootViewController = self.tabBarController;
And inside one of tabs I want to insert UINavigationController, and can't get it.
The code is contructed like this:
MainWindow.xib with UITabBarController object with tab typed as UINavigationController (point to NavigationHistory.xib) - screenshot: invalid link
NavigationHistory.xib contains only UINavigationController where view point to History.xib
History.xib have only UITableView element - screenshot: invalid link
And now UIViewController doesn't display my View1 view, and I have no clue why it may be. Maybe you have any clue? or point me to the place where such configuration is done.
I'll answer myself. It's good explained at
https://developer.apple.com/library/ios/#documentation/WindowsViews/Conceptual/ViewControllerCatalog/Chapters/CombiningViewControllers.html
Write a code in appdelegate.m file.....
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
NSMutableArray *Mutablearray = [[NSMutableArray alloc] init];
UIViewController *1st_View = [[FirstViewController alloc] initWithNibName:#"FirstViewController_iPhone" bundle:nil];
UINavigationController *Navigation = [[UINavigationController alloc] initWithRootViewController:1st_View];
[Mutablarray addObject:Navigation];
UIViewController *2nd_View = [[SecondViewController alloc] initWithNibName:#"SecondViewController_iPhone" bundle:nil];
UINavigationController *Navigation = [[UINavigationController alloc] initWithRootViewController:2nd_View];
[Mutablearray addObject:Navigation];
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = Mutablearray;
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
return YES;
}
Add your controller object to UINavigationController, and add that navigationcontroller object to UITabBarController
UINavigationController is a subclass of UIViewController, a UITabBarController expects an array of UIViewControllers (and therefore UINavigationController ); this tells me me that I can give a UITabBarController an array of UINavigationControllers (or sublasses thereof) giving the desired interaction.
Ref : https://developer.apple.com/library/ios/documentation/UIKit/Reference/UINavigationController_Class/
https://developer.apple.com/library/ios/documentation/UIKit/Reference/UITabBarController_Class/
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
UITabBarController *tab = [[UITabBarController alloc] init];
SimpleTableViewController *tableView = [[SimpleTableViewController alloc] init];
UINavigationController *nav1 = [[UINavigationController alloc] initWithRootViewController:tableView];
UITabBarItem *item = [[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemHistory tag:0];
nav1.tabBarItem = item;
AboutViewController *about = [[AboutViewController alloc] init];
UINavigationController *nav2 = [[UINavigationController alloc] initWithRootViewController:about];
UITabBarItem *item2 = [[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemFeatured tag:0];
nav2.tabBarItem = item2;
tab.viewControllers = #[nav1,nav2];
self.window.rootViewController = tab;
[self.window makeKeyAndVisible];
return YES;
}