I'm stuck on a problem I really don't know how to solve:
I have a TabBarController defined in my AppDelegate.
UITabBarController *tabBarController = [[UITabBarController alloc] init];
In this TabBarController i have several other NavigationControllers which have UiVieController inside:
ProgramController *programContr = [[ProgrammController alloc] init];
UINavigationController navControllerPro = [[UINavigationController alloc] initWithRootViewController:programContr];
ManualController *manualContr = [[ManualController alloc] init];
UINavigationController navControllerMan = [[UINavigationController alloc] initWithRootViewController:manualContr];
and i add the NavigationController to the TabBarController:
tabBarController.viewControllers = [NSArray arrayWithObjects:navControllerPro,navControllerMan, nil];
I set the tabBarController to the rootViewController:
self.window.rootViewController = tabBarController;
[[self window] makeKeyAndVisible];
That works fine.
Now i want to add a "Login Screen" on top of that.
I did this with:
[tabBarController presentModalViewController:navControllerLogin animated:YES];
Now the TabBarController loads its content in the background even if the LoginViewController is in front. How to load the TabBarController only if a Button is pressed on the LoginViewController?
Please help me.
The tab bar controller is loaded everytime beacuse you set it as the rootViewController.
You should set a normal viewController as the root.. and if the login was succesfull the you should call the tabBarController to be loaded.
In other words, in the appDelegate there should be only the login window.. and in the loginViewController, if the login was ok, you should call and load your tabBarController with all its controller.. using storyboard makes it a lot easier.
Related
I had an application in which I need to have a login or register system before the tab bar controller is added to the window, such as in Instagram.
I have added 5 navigation controllers (with view controller as its root) to the UITabBarController and then set it as the root of the window. Before that, I need to have another UINavigationController for the login system.
If I add that, how do I remove it before adding tab?
Another problem is that I also have to handle logging out, so I need to come back to it.
Can anybody help me with me how to do this?
I suggest to you loading Loginview From Delegate window as we did Normally. and from Logged Success its button click you set TabbarController like this:-
UIViewController *viewControllerPostalCode2 = [[cntrServices alloc] initWithNibName:#"cntrServices" bundle:nil];
UIViewController *viewControllerPostalCode3 = [[cntrInquiryViewController alloc] initWithNibName:#"cntrInquiryViewController" bundle:nil];
UINavigationController *navPostage1 = [[UINavigationController alloc] initWithRootViewController:viewControllerPostalCode2];
UINavigationController *navPostage2 = [[UINavigationController alloc] initWithRootViewController:viewControllerPostalCode3];
//
navPostage1.navigationBar.tintColor =DARK_BACKGROUNDNavigation;
navPostage2.navigationBar.tintColor =DARK_BACKGROUNDNavigation;
//
self.tabBarForServicesController = [[UITabBarController alloc] init];
self.tabBarForServicesController.delegate=self;
self.tabBarForServicesController.viewControllers = [NSArray arrayWithObjects:navPostage1,navPostage2,nil];
[self.navigationController pushViewController:self.tabBarForServicesController animated:YES];
I Done this type of Task using this method and at the Logged Out just poptoRootviewController work back to the Logged in Screen.
I have done this like adding my tabbarcontroller as rootViewController to UIWindow and in applicationbecomeactive delegate i present a controller with navigation controller like when required and simply dismiss the controller when authentication done
UIViewController *topViewController = [self.navController topViewController];
if (![topViewController isKindOfClass:[LGLoginViewController class]]) {
[self.navController popToRootViewControllerAnimated:YES];
self.navController = nil;
LGLoginViewController* loginView = [[LGLoginViewController alloc] initWithNibName:#"LGLoginViewController"bundle:nil];
if (!self.navController) {
self.navController = [[UINavigationController alloc] initWithRootViewController:loginView];
} else {
[self.navController initWithRootViewController:loginView];
}
self.navController.delegate = self;
[self.window.rootViewController presentModalViewController:self.navController animated:NO];
}
I am presenting a UITabBarController from another ViewController (HomeViewController). The TabBarController in turn contains UINavigationControllers. However, when from one of the navigation controllers, the user presses the home button, he is required to go to the original ViewController from where the TabBarController was presented.
**tabBarController is not the rootViewController of my window.
Here's my code.
In AppDelegate, I am creating and configuring my TabBarController.
self.custCareVC = [[CustomerCareViewController alloc] initWithNibName:#"CustomerCareViewController_iPhone" bundle:NULL];
self.POController = [[PurchaeOrderViewController alloc] initWithNibName:#"PurchaeOrderViewController_iPhone" bundle:NULL];
self.accAndContactsController = [[AccountsAndContactsViewController alloc] initWithNibName:#"AccountsAndContactsViewController_iPhone" bundle:NULL];
self.customerCareNavController = [[UINavigationController alloc] initWithRootViewController:self.custCareVC];
self.customerCareNavController.title = #"Customer Service";
self.purchaseOrderNavController = [[UINavigationController alloc] initWithRootViewController:self.POController];
self.purchaseOrderNavController.title = #"PO";
self.accAndContactsNavController = [[UINavigationController alloc] initWithRootViewController:self.accAndContactsController];
self.accAndContactsNavController.title = #"Accounts And Contacts";
self.tabBarController = [[UITabBarController alloc] init];
//self.tabBarController.tabBar.backgroundImage = [UIImage imageNamed:#"bluehead.png"];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:self.customerCareNavController, self.accAndContactsNavController, self.purchaseOrderNavController, nil];
In my HomePageViewController, i am presenting it in the following way (on click of a button):
AppDelegate *appDel = [[UIApplication sharedApplication] delegate];
appDel.tabBarController.delegate = self;
[self presentViewController:appDel.tabBarController animated:YES completion:NULL];
Now i need to dismiss my tabBarController after a user presses a Button on any of the navigation controllers (present in the tabBarController) and show the HomeViewController again..!!
You need to create a function in your target controller (which has the power to dismiss the tabBarController) and call that function from your topmost(current) controller/ controller the user is currently interacting with. To achieve the above, you need to first get the tabBarController object from the current controller using parent view controller. Then get the parent view/ root view controller of that controller and performSelector (function) which you created in the first controller.
Be sure to check doesRespondToSelector before you call performSelectorso as to avoid any nasty crashes.
Another way, though pretty hackie is to store a weak reference of the first controller in the AppDelegate and access the same from you current controller.
I'm opening a View from the navigationController, using the NVSlideMenuController. However, I haven't been able to show a Navigation Bar (which I definitely need).
I'm not familiar with NavigationControllers and after following a few tutorials, it still isn't clear enough to me how it works.
This is in the AppDelegate application didFinishLaunching:
IntroViewController* introVC = [[IntroViewController alloc] initWithNibName:#"IntroViewController" bundle:nil];
UIViewController *menuViewController = [[MenuViewController alloc] initWithStyle:UITableViewStyleGrouped]; // Your menu view controller
UIViewController *contentViewController = (UIViewController*)introVC; // The initial content view controller
menuViewController.navigationController.navigationBarHidden = false;
NVSlideMenuController *slideMenuController = [[NVSlideMenuController alloc] initWithMenuViewController:menuViewController andContentViewController:contentViewController];
self.window.rootViewController = slideMenuController;
return YES;
I tried adding the code to put the navbarhidden to false and it doesn't seem to work. Is there something else I missed?
Any help is very appreciated!
MyViewController *myViewController = [[MyViewController alloc] init];
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:myViewController];
self.window.rootViewController = navigationController;
This will set the UINavigationController as your root view controller. If you MUST use NVSlideMenuController (which I have 0 experience with but really don't think it is necessary), then you can do the first two lines I gave you, and set the navigationController as the root for the NCSlideMenuController.
I would recommend Apple's documentation for UINavigationController, it is an extremely useful thing to know:
https://developer.apple.com/LIBRARY/IOS/documentation/UIKit/Reference/UINavigationController_Class/Reference/Reference.html
Having one main navigation controller in whole application and also one main tabbarcontroller , problem is that when i click om 'more' tab of tabbarcontroller at that time it's showing two navigation bars
to solve this problem i tried to hide my main navigation controllers navigationbar using following code :
self.tabbar.navigationController.navigationBarHidden =YES;
but doing this gives me unexpected result in the form of half navigationbar with half black background.
if any one knows the solution then please help me.
thanks in advance.
make viewController With separate UINavigationController,
put this code in Appdelegate
ViewController *a = [[ViewController alloc] initWithNibName:#"a" bundle:nil];
ViewController *b= [[CreateMeetingViewController alloc] initWithNibName:#"b" bundle:nil];
ViewController *c = [[SettingsViewController alloc] initWithNibName:#"c" bundle:nil];
UINavigationController *nav_1 = [[UINavigationController alloc] initWithRootViewController:a];
UINavigationController *nav_2 = [[UINavigationController alloc] initWithRootViewController:b];
UINavigationController *nav_3 = [[UINavigationController alloc] initWithRootViewController:c];
MainTabBar = [[UITabBarController alloc] init];
MainTabBar.delegate = self;
[MainTabBar setViewControllers:[NSArray arrayWithObjects:nav_1,nav_2,nav_3,nil]];
MainTabBar.view.frame=self.view.frame;
[self.view addSubview:MainTabBar.view];
You can check your .Xib you check the option Top Bar this should be 'None' in the identity inspector.
Write in viewWillAppear, i hope it will be helpful for you
[self.navigationController setNavigationBarHidden:YES animated:YES];
How do I add the back button to a navigation bar? I know there are some related questions but none of them helped. I'm not using storyboard nor did I start with the Master Detail template. Is there a setting to do this? or do you add it by code? if so what code do I need? Any help is appreciated! THANKS!
The back button will appear by default if you use a navigationController correctly. The ViewControllers should be this
NavigationController > FirstViewController > SecondViewController
You will need to create navigationController and instantiate with firstVC as the root. From firstVC you can push secondVC and the back button will be there.
The following placed into appDelegate application didFinishLaunchingWithOptions: will load firstVC initially. Place this after you initialize the window...
UIViewController *firstVC = [[UIViewController alloc] initWithNibName:#"firstVC" bundle:nil];
// any setupup of firstVC
UINavigationController *navCon = [[UINavigationController alloc] initWithRootViewController:firstVC];
[self.window setRootViewController:navCon];
Then in your firstVC class if you want to push secondVC
in firstVC.m:
UIViewController *secondVC = [[UIViewController alloc] init];
[self.navigationController pushViewController:secondVC animated:YES];
You don't need to explicitly add a back button. The button will be added automatically when you push controllers into a UINavigationController. That is, a call as:
[navigator pushViewController: controller animated: ...];
creates a back button.