I have a tabbed application running with 4 tabbed items.
Each tabbed item has its own view controller - controller1, controller2, controller3 and controller4. I can transition to anyone of them without problems.
I now have a new view controller newView. I perform a segue from controller2 to newView. Problem is, when I perform the segue, the TabBar disappears in newView.
Also, if I segue back, I don't see the tab bar in controller2 either.
How do I go about this in Swift. Thanks.
You should wrap each UIViewController (controller1, controller2, controller3 and controller4) in its own UINavigationController (in the storyboard you will find the option in Editor > Embed in).
Each of the four navigation controllers should in turn become tabs in your UITabBarController.
The transition from controller2 to newView will be within its navigation controller, which is enclosed in the tab bar controller and therefore the tab bar controller will not be dismissed.
Related
Back when I first created the foundational layout for the app I'm currently working on in Storyboard, I did it in two steps:
Selected my View Controller and used Editor->Embed In->Navigation Controller.
Selected my View Controller again and used Editor->Embed In->Tab Bar Controller.
This was the resulting layout:
Question 1: Why do these steps create such an odd layout?
In this weird layout that seems to imply that the Navigation Controller is attached to the Tab Bar Controller as its parent, the only way I can get navigation items to display in the app (in the view controlled by the View Controller on the right) is by placing them in the nav bar of the Tab Bar Controller scene.
However, this creates various issues, including not being able to create an IBOutlet in my View Controller file for a custom view I drag into the title view slot in the Tab Bar Controller scene. Meanwhile, dragging anything into the navigation bar in the View Controller scene just makes it not appear in the app when it runs.
Question 2: How can I fix this layout so that I can control-drag from navigation items into my View Controller file? Or is everything actually correct, and I'm just trying to force something I shouldn't? (My intention here is to be able to set the custom title view's text in my View Controller code.)
Its obvious, if you want to embed MyViewController to NavigationController then you need to change your second step and need to embed NavigationController to Tab Bar Controller.
Selected MyViewController and used Editor->Embed In->Navigation Controller.
Selected NavigationController Embed with MyViewController and used Editor->Embed In->Tab Bar Controller.
It should look like this.
Note: You need to embed MyViewController to navigationController only if you want to perform push operation on this TabBarItem means with MyViewController other wise simply embed MyViewController to TabBarController no need to embed it with NavigationController.
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.
I have a problem with SWRevealViewController. In my app I have a long chain of UIViewControllers connected to a single UINavigationController. After adding a side menu and setting the "reveal view controller push controller" segue for cells I see only ViewControllers connected with a segue. I can't move between my UIViewControllers in the chain any more. And navigation bar is missing. Is it possible to use a side bar and UINavigationBar at the same time?
I see your image I think you have to add another navigation controller before the C****** S****** View Controller or the view controller you want to go
the reason is that there is no UINavigationController before the C****** S****** View Controller and that's why Navigation bar is hidden and you can't move
I have implemented a tab bar, but as I go through the app I am not seeing the tab bar. It disappears after I go to a certain page. This is how I implemented it. I have a tab bar connected to a vc which is embedded inside a navigation controller. So the hierarchy looks like this.
----UITabBarController
-------UINavigationController
-----------ViewController 1 with button to view controller 2 (I can see the tab bar)
----------------View Controller 2 (I can't see the tab bar)
It sounds like the segue that you get from view controller 1 to view controller 2 is a "present" segue, rather than a "push" segue. (If I recall correctly, Apple removed "push" segues from Storyboards recently.) Sadly, "present"ed view controllers appear in front of the navigation controller.
In order to do a "push" segue, you have to do it in code, e.g.:
- (IBAction)buttonTapped: (id)sender
{
ViewController2 *viewController = ...
[self.navigationController pushViewController:viewController];
}
i think you missed to initial tab bar as initial view controller
hello I have implemented SWRevealViewController in my swift app. The problem I am having is If I set SWRevealViewController as my initial ViewController all works fine. But If I launch this controller through code
let nav : UINavigationController = UINavigationController(rootViewController: self.storyboard!.instantiateViewControllerWithIdentifier("swrevealviewcontroller") as UIViewController)
self.navigationController?.presentViewController(nav, animated: true, completion: nil)
the navigation Title and barButtonIcon Disappears which is in my case is a hamburger menu icon.
SWRevealViewController is connected to the HomeViewController. and I am initiating SWRevealViewController when user clicks the login Button.
If you need more information regarding the storyboard screenshot let me know. I'll upload here.
Updated:
storyboard
navigation controller's navigation bar will only show up for view controllers that are contained by that navigation controller. Here, you're presenting a modal view. It's not contained by the navigation controller.
If you want the navigation bar to continue to appear:
If it's purely a matter of style, put a navigation bar on the modal scene you're presenting in the interface builder.
If you need to modally present a view that should be contained in a navigation controller, then you need to present a navigation controller--not a view controller.
Finally, if the view you're presenting is intended to be part of the navigation controller's navigation stack, then you need to present it with a push, not a modal segue.
Update
Do like simple ,
and call the perform segue as
[self performSegueWithIdentifier:#"main" sender:self];
I solved my problem by pointing Navigation Controller first and Tab Bar Controller second. Please, see the picture below.
Hope this help!..Thanks...