My initial question is:
I want to change the navigation item (both title and button when switching between tabs).
I tried the answer : Storyboard navigation controller and tab bar controller. It says:
self.parentViewController.navigationItem setTitle:#"Title"];
add to viewDidLoad in each view controller works.
However, when I re-enter the view, the tile won't change. I think it means viewDidLoad won't get called-back when re-entering.
Any solution about Storyboard navigation controller and tab bar controller ?
You're looking for viewWillAppear:. Here's Apple's documentation. This method will be called on the controller that is being presented, or being transitioned to. viewWillDisappear: (documentation here) is called on the controller that is being transitioned away from.
It would be better to have a navigation controller for each tab in you tab bar. Then you can set your titles right in the storyboard.
Related
I'm trying to display the navigation bar at the top of the screen, but it's not showing in embed navigation controller.
Here is how it is in the storyboard:
And here it's in the simulator:
As you can see, I created a custom TabBar (following this tutorial) at the bottom of the screen so I can navigate between the different views.
I believe that I'm going to have to load the navbar programatically because the only solution that I found was to set the navigation controller as the initial view controller, but I already set another view as the initial one so I can't do that.
Issue :
When you instantiate a viewController using storyBoard identifier they wont come with free embedded navigation controller, even if you have added a NavigationController to them. As a result you are adding a viewController without navigation bar to your tab bar VC.
Solutions:
Solution1: If you want each child viewControllers to carry their own navigation controller hence their own navigation stack, provide a storyboard identifier to Navigation Controller behind your child viewControllers and instantiate the Navigation controller itself rather than ViewController. And add NavigationController as you tab bar looking VC's child. Because navigation controller loads the embdedded VC by default you will see your child VC with nav bar.
Solution2: All that you care for is only nav bar than add the Navigation Controller behind the VC containing tab bar looking View.
Hope it helps
Have you tried constraining the navigation bar to your view? Otherwise it can move offscreen.
You need to point the tab bar controller segue to the navigation controller of your view - otherwise if you point the segue straight to the view you're just loading the view without any navigation controller attached.
In my app I have this storyboard:
and I would like to add a back button from the second table view back to the first. So I inserted a Navigation controller in order to have a navigation bar in the second table view ad I have created a segue with its identifier from the second table view to the first. But then how can I add a back button? I have tried to drag a button from the library into the navigation controller but it won't let me do it...I had already done this but in this moment I can't remember how.
Please can you help me?
In above image you shared you are making your tableview controller as root view controller.You have to kept your navigation controller on root. As you can see in attached image and you don't have to make back button manually as navigation controller has its own default back button.
This example is right how to make storyboard.Try it
self.navigationController?.navigationBar.hidden = false
In setting of UINavigationController set up like on screenshot
If you're using a navigation controller and its default navigation bar, you don't add an explicit back button--the navigation bar does it for you. You can add a UINavigationItem to your view controller, on which you set a title, back button title, etc.
I instantiate my UITabBarController by calling navigationController.viewControllers = #[[self.storyboard instantiateViewControllerWithIdentifier:#"tabController"]];
My Tab bar controller has a child view that is embedded in a navigation controller. However the bar button (item) is unresponsive when I touch them (the buttons in the navigation bar). I have tried logging the action but it appears as if the button is not firing at all.
The only thing that I have done differently is the way i instantiated the tab bar controller. Am I missing something?
I connected the navigation bar button from the storyboard to an action so it is hooked up successfully. Please note there is also a navigation Controller pointing to the UITabbarController not shown below.
The unwanted behaviour maybe because this flow (navigation controller to tabbar controller) is ill advised in the Apple HIG. More information can be found here: Storyboard with NavigationController and TabController. The solution I found was to hide the navigation bar on the navigation controller that links to the navigation bar (can be done in interface builder), then make it reappear in the new navigation controller that the tab bar links to. Confusing I know, I can help anyone who ever has a similar issue.
Is there any specific reason you are doing this:
navigationController.viewControllers = #[[self.storyboard instantiateViewControllerWithIdentifier:#"tabController"]];
You can simply drag an outlet from the UITableViewController to the UINavigationController using only the Storyboard.
I think you forgot to add the navigationItem. In the storyboard, add a navigation Item to your viewController and move your bar button items to the navigation bar that appears on the top.
In my storyboard I have a view with a segue into a new view that's embedded into a Navigation Controller (so the segue points to the navigation controller). I have the segue set to a Modal transition, however when the new view is animating up, it contains the standard blue navigation bar above the view (which then animates out of view).
Here's what it looks like mid segue: http://i.imgur.com/3eqAQ.png
How do I make it so the modal view animates up but without the navigation bar?
I have tried hiding the navigation bar in the embedded view's init, viewWillAppear, and vieWillLoad methods and that doesn't work.
I event went so far as to create a custom subclass of UINavigationController and set the navigation controller in the storyboard to it.
Thanks!
This may sound pretty simple, but have you tried hiding the navigation bar immediately before the modal segue starts? I had this problem when presenting a modal view controller and adding a [self.navigationController setNavigationBarHidden:YES] immediately before the presentation did the trick for me.
I had almost the same problem, but I wanted to get a navigation bar for my modal transition, as it was always hidden.
There may be two ways for you to remove the navigation bar:
Make sure that your view controller is not embed in a navigation controller, as it would put one by default
Check the "Top Bar" attribute of your previous controller in the workflow and work with none/inferred values depending on your storyboard.
Regards
I have application with 2 tab bars. In second tab bar I have navigation controller. I want to change this navigation controller to another navigation controller when "Change" button is pressed. How can I do that? Please help me.
Thanks
You'd have to replace the View Controller in the TabBar using the viewControllers property of UITabBarController or setViewControllers:animated:if you want to add some animation.
But maybe you should think of having 2 views in a controller of yours and hide/show them when you click a button, maybe even pushing/popping view controllers without animation (pushViewController:yourController animated:NO) on the navigation stack of your navigation controller and just hide the back button (self.navigationItem.hidesBackButton = YES)