I have the following TabBarController with the uiTabBarItems
[Item1, Item2, Item3, Item4]
This struct works fine (Every ViewController is displayed correctly), my problem is:
When I change to another ViewController from Item1, Item2 ... the TabBarItems bottom are hidden/lose
[, , , ]
I'm using the following code to change of viewController from Item1 ViewController
NewViewController *controller = [[NewViewController alloc]init];
[self.tabBarController setViewControllers:[[NSArray alloc] initWithObjects:controller, nil]];
is correct change of viewcontroller with the code showed previously?
EDIT.-
Basically I want to navigate on ViewControllers of Item1 (UITabBar) without lost the UITabBarItems
If you want to set the active tab, you should't use setViewControllers: since that replaces all your tabs. You should use setSelectedIndex: on your UITabBarController instead.
Try this.
call this method , where to present UITabBar
In .h,
#property (strong, nonatomic) UINavigationController *navigation;
#property(nonatomic, strong) UITabBarController *tabbarcontroller;
In .m,
-(void)loadtabview
{
self.tabbarcontroller = [[UITabBarController alloc] init];
NSMutableArray *localControllersArray = [[NSMutableArray alloc] initWithCapacity:4];
self.firstViewController = [[FirstViewController alloc]initWithNibName:#"firstViewController" bundle:nil];
navigation = [[UINavigationController alloc] initWithRootViewController:self.firstViewController];
self.viewController.navigationItem.title=#"First";
[localControllersArray addObject:navigation];
self.secondViewController = [[secondViewController alloc] initWithNibName:#"secondViewController" bundle:nil];
navigation = [[UINavigationController alloc] initWithRootViewController:secondViewController];
self.secondViewController.navigationItem.title=#"second";
[localControllersArray addObject:navigation];
self.ThirdViewController = [[Third ViewController alloc]initWithNibName:#"Third ViewController" bundle:nil];
navigation = [[UINavigationController alloc] initWithRootViewController:ThirdViewController];
self.secondViewController.navigationItem.title=#"Third";
[localControllersArray addObject:navigation];
tabbarcontroller.viewControllers = localControllersArray;
self.tabbarcontroller.delegate = self;
[self.tabbarcontroller setSelectedIndex:0];
[self.window addSubview:tabbarcontroller.view];
}
Related
I want to have a common navigation bar to RecieptViewController and StockViewController and the bar should contain back button to go back to InventoryViewController.....
this code is written in InventoryViewController viewDidLoad:-
RecieptViewController *firstVC=[[RecieptViewController alloc]init];
UITabBarItem *itme1=[[UITabBarItem alloc]initWithTitle:#"First" image:nil tag:1];
itme1.title=#"Reciept";
[firstVC setTabBarItem:itme1];
StockViewController *secondView=[[StockViewController alloc]init];
UITabBarItem *item2=[[UITabBarItem alloc]initWithTitle:#"Second" image:nil tag:2];
item2.title=#"Stock";
[secondView setTabBarItem:item2];
[tapBarController setViewControllers:[NSArray arrayWithObjects:firstVC,secondView,nil]];
If you want to add navigation controllers to your UITabBarController then you must try the following:
UIViewController *viewController1, *viewController2;
UINavigationController *navigationController1, *navigationController2;
viewController1 = [[RecieptViewController alloc] initWithNibName:#"RecieptViewController" bundle:nil];
viewController2 = [[StockViewController alloc] initWithNibName:#"StockViewController" bundle:nil];
navigationController1 = [[UINavigationController alloc] initWithRootViewController:viewController1];
navigationController2 = [[UINavigationController alloc] initWithRootViewController:viewController2];
[tapBarController setViewControllers:[NSArray navigationController1,navigationController2,nil]];
This question already has an answer here:
Showing login view controller before main tab bar controller
(1 answer)
Closed 9 years ago.
Im beginner to IOS app development learning.
I have a login screen as my first view controller and i need the second view controller to be a tab bar view controller .with 4 different tabs and i have 4 different XIB's for them.
some one help me to go ahead.
Best way you can do is Present the login screen modally when the app starts from your tab bar controller first screen, add code for presenting login screen in viewWillAppear and after login dismiss the screen. You can create TabBarController in appDelegate like this
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
UITabBarController tabBarController=[[UITabBarController alloc] init];
FirstViewController *firstVC = [[UIViewController alloc] initWithNibName:#"FirstVC" bundle:nil];
UINavigationController *firstNavController = [[UINavigationController alloc] initWithRootViewController: firstVC];
SecondViewController *secondVC = [[UIViewController alloc] initWithNibName:#"secondVC" bundle:nil];
UINavigationController *secondNavController = [[UINavigationController alloc] initWithRootViewController:secondVC];
tabBarController.viewControllers = [NSArray arrayWithObjects: firstNavController, secondNavController, nil];
tabBarController.selectedIndex=0;
tabBarController.delegate = self;
UITabBarItem *item1 = [[UITabBarItem alloc] initWithTitle:#"Movies" image:[UIImage imageNamed:#"MoviesTAB.png"] tag:1];
[firstVC setTabBarItem:item1];
UITabBarItem *item2 = [[UITabBarItem alloc] initWithTitle:#"Music" image:[UIImage imageNamed:#"musicTAB.png"] tag:2];
[seconfVC setTabBarItem:item2];
tabController.tabBar.translucent = NO;
tabController.tabBar.barStyle = UIBarStyleBlack;
tabBarController.tintColor = [UIColor whiteColor];
self.window.rootViewController = tabController;
return YES;
}
Best way is use storyboard and there just have one initial UIViewController and from that make segue to UITabBarViewController.
http://youtu.be/a_DCTSTv1Mw
If you want to make it through xib make a UITabBarViewController and add viewControllers to the array of object of that UITabBarViewController's object.
Sample code :
NSMutableArray *arrViewControllers = [[NSMutableArray alloc] init];
UIViewController *tabController;
UIImage *tabImage ;
NSString *tabTitle;
for (int i= 0; i < 3; i++) {
switch (i) {
case 0:
tabController = [[ViewController alloc] init];
tabImage = [UIImage imageNamed:#"icon1.png"];
tabTitle = #"Text";
break;
case 1:
tabController = [[ImageDemoViewController alloc] init];
tabImage = [UIImage imageNamed:#"icon2.png"];
tabTitle = #"Image";
break;
case 2:
tabController = [[TableDemoViewController alloc] init];
tabImage = [UIImage imageNamed:#"icon3.png"];
tabTitle = #"Table";
break;
}
// set the image and title using some properties of UIViewController
tabController.tabBarItem.image = tabImage;
tabController.tabBarItem.title = tabTitle;
//add objects to array
[arrViewControllers addObject:tabController];
[tabController release];
}
_baseController = [[UITabBarController alloc] init];
_baseController.viewControllers = arrViewControllers;
[arrViewControllers release];
go to your appDelegate
1.create a viewController for login screen.
LoginViewController *viewController1 = [[LoginViewController alloc] initWithNibName:#"LoginViewController" bundle:nil];
2.create a navigationController with root view your login ViewController.
UINavigationController *nVC = [[UINavigationController alloc] initWithRootViewController:viewController1];
3.make navigationController to root view of window.
self.window.rootViewController = self.nVC;
[self.window makeKeyAndVisible];
Now go to Touch-Up-Inside method of login button in LoginViewController.
1.After validation of password and userId initialise your viewControllers for tabbar and TabbarViewController.
UiViewController ...*yourViewControllers,..,
UITabBarController *YourtabBarController = [[UITabBarController alloc] init];
2.Now add these viewControllers to your tabbarController.
YourtabBarController.viewControllers = #[ YourViewController1,YourViewController2,YourViewController3,......];
3.Finally push this tabbarController to navigationControllere.
[self.navigationController pushViewController:YourtabBarController animated:NO];
I have a tab bar controller created by a MainWindow.xib. I have 4 view controllers in it. Now i want to add a 5th item programatically (because I dont know which class I will have to use until compile time)
This is my code:
UIViewController * login = [[LoginUserViewController alloc] initWithNibName:#"LoginUserViewController" bundle:nil];
NSMutableArray * viewControllersArray = [NSMutableArray arrayWithArray:self.tabBarController.viewControllers];
[viewControllersArray addObject:login];
[self.tabBarController setViewControllers:viewControllersArray
animated:YES];
But I get
[LoginUserViewController viewControllers]: unrecognized selector sent to instance 0x95791b0'
When I reach this code
UINavigationController *navController = [tabBarController.viewControllers lastObject];
LoginViewController * log = [navController.viewControllers objectAtIndex:0];
Where am I going wrong? Any ideas?
Thanks a lot
If this is all your code, it does not look like you are instantiating the navigation controller. Look at:
initWithRootViewController:
in the UINavigatorClass. I would replace:
UINavigationController *navController = [tabBarController.viewControllers lastObject];
with:
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController: [tabBarController.viewControllers lastObject]];
Edit:
One more thoughts:
Looks like you lucked out on the "tabBarController" property since you might have synthesized it as #synthesize tabBarController=tabBarController;
I strongly recommend you use the latest version of XCode which will automatically do the #synthesize for you. The line before last in your code should be self.tabBarController
You forgot that last tab is LoginUserViewController and not an instance of UINavigationController.
After adding LoginUserViewController to tab bar controller, your last view controller in tab bar controller's array will be LoginUserViewController and not an instance of UINavigationController
UINavigationController *navController = [tabBarController.viewControllers lastObject];
Hence above line will return LoginUserViewController's object in navController variable.
RecordsViewController *recordsViewController = [navController.viewControllers objectAtIndex:0];
Hence above line will cause crash as LoginUserViewController don't have viewControllers property.
Try this....
- (void) setUpTabBar {
FirstViewController *firstViewController = [[FirstViewController alloc]init];
firstViewController.title = #"First View";
firstViewController.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemSearch tag:0];
UINavigationController *firstNavController = [[UINavigationController alloc]initWithRootViewController:firstViewController];
SecondViewController *secondViewController = [[SecondViewController alloc]init];
secondViewController.title = #"Second View";
secondViewController.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemFavorites tag:1];
UINavigationController *secondNavController = [[UINavigationController alloc]initWithRootViewController:secondViewController];
ThirdViewController *thirdViewController = [[ThirdViewController alloc]init];
thirdViewController.title = #"Third View";
thirdViewController.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemRecents tag:2];
UINavigationController *thirdNavController = [[UINavigationController alloc]initWithRootViewController:thirdViewController];
ForthViewController *forthViewController = [[ForthViewController alloc]init];
forthViewController.title = #"Forth View";
forthViewController.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemHistory tag:2];
UINavigationController *forthNavController = [[UINavigationController alloc]initWithRootViewController:forthViewController];
tabBarController = [[UITabBarController alloc] initWithNibName:nil bundle:nil];
tabBarController.viewControllers = [[NSArray alloc] initWithObjects:firstNavController, secondNavController, thirdNavController, forthNavController, nil];
tabBarController.delegate = self;
[self sizeViewToAvailableWindow:[tabBarController view]];
[firstNavController release];
[firstViewController release];
[secondNavController release];
[secondViewController release];
[thirdNavController release];
[thirdViewController release];
[forthNavController release];
[forthViewController release];
}
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];
Im implementing a combined tab bar and navigation programatically, using the apple documentation,
it is not working when calling the initWithFrame,[goes black screen]; but if left as below code it works for showing main screen, with out the tab bar, and when using the tab bar goes black screen
here the code
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:( NSDictionary *)launchOptions {
self.tabBarController = [[[UITabBarController alloc] init] autorelease];
StartViewController *startViewControllerView = [[[StartViewController alloc] init] autorelease]; //ojo recomendado por apple!!!
VideosViewController* VideosViewController_ = [[[VideosViewController alloc] init] autorelease];
PhotosViewController* PhotosViewController_ = [[[PhotosViewController alloc] init] autorelease];
SocialViewController* SocialViewController_ = [[[SocialViewController alloc] init] autorelease];
self.pagesNavigation = [[[UINavigationController alloc] initWithRootViewController:startViewControllerView] autorelease];
self.pagesNavigation.navigationBarHidden = NO;
NSArray* controllers = [NSArray arrayWithObjects:VideosViewController_, PhotosViewController_, SocialViewController_, startViewControllerView, nil];
self.tabBarController.viewControllers = controllers;
[self.window addSubview:startViewControllerView.view];
//self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
[self.window makeKeyAndVisible];
return YES;
}
so if left as shown above, it works but if I comment the addSubview and uncomment the initWithFrame, it doesnt work,,
//[self.window addSubview:startViewControllerView.view];
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
So, what Im i missing?,
what would be the right way to call the initWithFrame?
thanks a lot!
Why are all your viewcontrollers auto released? You should probably be retaining them and releasing them only when you're done with them.
As for your structure, I've found that building a single navigation controller for each tab in the tabbarcontroller, adding those to the controller, then adding the tabbarcontroller to the window works like this...
AppDelegate.h
property (nonatomic, retain) UITabBarController *tabBarController;
property (nonatomic, retain) UINavigationController *firstNavController;
property (nonatomic, retain) UINavigationController *secondNavController;
property (nonatomic, retain) FirstViewController *firstViewController;
property (nonatomic, retain) SecondViewController *secondViewController;
AppDelegate.m
firstViewController = [[FirstViewController alloc] someInitMethod:someArg];
firstNavController = [[UINavigationController alloc] initWithRootViewController:firstViewController];
secondViewController = [[SecondViewController alloc] someInitMethod:someArg];
secondNavController = [[UINavigationController alloc] initWithRootViewController:secondViewController];
tabBarController = [[UITabbarController alloc] init];
NSArray *tabs = [NSArray arrayWithObjects:firstNavController, secondNavController, nil];
[tabBarController setViewControllers:tabs animated:NO];
self.window.rootViewController = tabBarController;
[self.window makeKeyAndVisible];