I want to add a Back button to a Navigation Controller. This is how my storyboard looks like:
I have a ProgViewController for the main screen. The TableView is embedded into the Navigation Controller. I also have a ProgPlayersViewController for the TableView.
My question is how can I add a Back button to the Navigation Controller?
Thanks for your help.
ProgViewController needs to be in the navigation stack so that you can go back (ie. 'pop') to that view controller.
The actual button itself is created by the navigation controller assuming that there is a view controller to actually go back to.
The navigation controller, as you have it in your diagram, needs to be before the ProgViewController and not after it.
Note if you don't want the navigation bar to be visible in the ProgViewController you can set it to hidden.
Related
I'm trying to add UINavigationItem to my UIViewController as mentioned this answer. However the Navigation bar is not showing in my view. I tried even adding an outlet and setting the title programmatically and also adding the NavigationItem in two different places. Still it doesn't show. This view controller is embedded in a TabBarController. WHat am I missing here?
Thanks is advance.
This view controller is embedded in a TabBarController
But is it embedded, first and foremost, in a UINavigationController? If not, there will be no navigation bar that automatically appears and that automatically uses your view controller's navigation item.
If you don't want to use a UINavigationController (because you have no navigation to do), then you can add a navigation bar manually. But in that case your view controller's navigation item will not be used automatically to populate the navigation bar; you must populate it manually.
Typically, people do use a UINavigationController, even if there is no navigation to do, just to get this automatic behavior - to show the navigation bar and to populate it automatically.
[NOTE: The fact that you have told Interface Builder to show a navigation bar for this view controller, as if it were in a navigation controller, is irrelevant; that won't cause you to get any navigation bar when the app runs.]
I am trying to connect a new empty View(homeScreen) from a ViewController (loginScreen) using Xcode 6 Beta 4 and Swift. A button triggers the segue to the homeScreen View. The problem is that when I add the segue, my blank/empty homeScreen View magically gets a Navigation Item Bar on top of the view.
You can see that without the segue my homeScreen View its empty:
After the segue it looks like this:
As you can see, Xcode inserts the Navigation Item Bar on top (grey rectangle). I would like to know how to get rid of it or how to create an empty View that remains empty even after assigning a segue to it.
Thank you so much for your help!
Cheers!
UPDATE: My goal is to create a navigation bar kind of like the one Facebook implements in its' iOS app. On top have the search bar and maybe some more icons. Does anybody know how to do that? I tried to hide the Navigation bar by selecting my view controller and in the Attributes inspector setting the "Top Bar" attribute to none, but it does not work. Any suggestions?
Thanks again.
Does loginScreen is inside a UINavigationController? If it is, the new showed view controller (homeScreen) is supposed to be in the navigation controller too, and thus it has a navigation bar by default.
You can hide it if you want, but then you have to find an alternative way to navigate in your navigation controller.
Otherwise you can present the homeScreen modally changing the type of segue to "Present Modally".
For more details on view controller presentation see this document plus some updates in iOS8 (WWDC session: View Controller Advancement in iOS8).
EDIT: To implement the FB-like navigation bar I would customize the UINavigationController bar:
read this AppCoda tutorial about customizing the bar
to add a search bar use the code like:
let searchBar = UISearchBar()
...
self.navigationItem.titleView = self.searchBar
This is because the segue is a "push" segue ("Show (e.g. push)") from a View controller that is already included in a Navigation controller. Therefore, it is put in the stack of views of this Navigation Controller, and therefore receives a navigation bar.
If you don't want a navigation bar, then use either a modal segue ("Present modally"), or a custom segue.
Same thing if you need a different navigation Bar (not linked to the first Navigation Controller). You can perfectly have a modal segue leading to a UIViewController, which is embedded in its OWN navigation controller (or having only a navigation bar). Have a look in the menu: "Edit / Embed / Navigation controller".
I have a UINavigationViewController with two view controllers. The root view controller needs the navigation bar to be hidden, while in the second view controller, the navbar is visible.
I implemented custom transitions with UIViewControllerAnimatedTransitioning
When I push the second view, everything is fine. However, when I pop the view and return to root, there's a jump in the root controller frame. It animates in as though it has a navigation bar and when the animation completes, the frame is re-adjusted to full-screen.
What's the proper way to do this? The default transitions don't display this problem.
Two simple ways to fix it:
Hide the navigation bar entirely from the navigation controller and add a custom navigation bar to the first screen, independent on the navigation controller.
Let only the first screen to be in a navigation controller and create a custom transition to the second screen, not using navigation controller's push but implementing the push animation by yourself.
I am making an iPhone app in which I have used both, the navigation as well as the tabbar controller. Now after splash screen I want to show a UIView before showing the first view controller of the tab bar.
Currently I have added one subview on first tabBar controller. But this view gets messed up with the first tabBar controller's view.
Can anyone tell me that is it possible to add or present a UIView before launching the tabBar controller? If anyone has an idea please do let me know.
Use the storyboard. Make your additional view the first scene. Add a segue to the tab view. If you want an automatic transition, trigger the segue by a timer.
I am new to iPhone development. I have created a window based application in which I use navigation controller for switching from one screen to another.
On one screen I use a viewcontroller for switching to another screen. However, I then need a navigation controller in this screen for switching between screens. But I am unable to switch from one to another.
How can I use a navigation controller in this screen, when the previous screen is switched from a viewcontroller?
You're not supposed to use nested navigation controllers. You should just keep pushing view controllers to your main navigation controller. You can always access that navigation controller through self.navigationController in your view controllers.
You can use a navigation controller to hold your first view also. Just set the navigationBarHidden to YES, and toggle it when you push your second view controller.