I'm trying to find out why any ViewController, that I push onto navigation stack does not show tabbar. Now I have construction like this:
loginVC -> navigationController -> SWRevealVC --> (leftPanelVC and second segue is to tabbarController, which has 4 its own view controllers). When I push view controller from any of this 4 controllers I'm loosing my tabbar and I cannot bring it back. Tried hidesBottomWhenPushed but it didn't work out as expected. Anybody?
EDIT:
What I just tried, was to set connections like this: login -> tabbarcontroller -> as first subcontroller I set up SWRevealViewController and hooked to it front navigationController and rear tableController. Unfortunately it messes stuff a bit, because tabbar now stays always, even on top of rear controller... the look I'm trying to get is interaction like in facebook app, where tabbar is always visible, but as a part of front controller, not overlaying rear.
When I push view controller from any of this 4 controllers I'm loosing my tabbar and I cannot bring it back.
I am not sure what you are doing here, but as far as I understand, you have:
pushed a tab bar controller on to a navigation controller;
from that tab bar controller, pushed a new view controller on to the navigation controller.
It that is correct, than it is normal that your tab bar controller tab bar "disappears" since you are pushing a new view controller (point 2) on to the navigation controller and this will replace the tab bar controller as the top most controller in your navigation controller.
Possibly, what you are looking for can be obtained by embedding a navigation controller inside of a tab bar controller, but I do not have enough info about your UI to be sure this makes sense.
Related
I don't understand why SignIn and SignUp navigation Bar and the back buttons are not visible even when embedding both of these views in the navigation controllers.
Is there anything else we have to do in code. All top bars are inferred in this case and I haven't touched the visibility of any.
There is no back button because there is nowhere to go back to. Your sign up and sign in view controllers are the root view controllers of their respective navigation controllers.
There is no visible title because what you are looking at is the navigation item of the tab bar controller, which has no title.
Your architecture posits a navigation controller insider a navigation controller, which is illegal:
nav controller -> tab bar controller -> nav controller
You can't do that.
Also you can't put a tab bar controller inside a navigation controller. A navigation interface inside a tabbed interface is fine (as illustrate in Apple's own docs: https://developer.apple.com/documentation/uikit/uinavigationcontroller). The reverse, a tabbed interface inside a navigation interface, is not.
The simplest solution is to eliminate the first navigation controller completely, as there is no need for it (you are not pushing anything onto it beyond its root view controller).
IN SIMPLE TERMS
Logically, your Tabbar should not be embedded in a UINavigation Controller. Instead, delete the NavigationController and make the Tabbar the root Viewcontroller then embed each UIViewcontroller in a separate Navigation controller
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've got 3 view controllers. Two I have hooked up to a tab bar controller and one that I'm wanting to access when a user selects a cell on the second view controller in my tabbed views.
I'm wanting when the user hits "back" on the 3rd "detail" page for the user to be taken back to the 2nd view.
When I do this by just adding a button and segueing back to the 2nd VC, the tab bar is gone. I tried in my viewDidAppear to unhide the tab bar, but I guess going off of the tab bar controller messes up the navigation.
I tried creating a variable that was like "didHitBack" and on my "back" button on the 3rd view I'm creating a segue back to the Tab Bar Controller, and if "didHitBack" is true I do
_ self.tabBarController?.selectedIndex = 1
which takes me to the second page, but it's loading the first view in then going to the second page which looks bad.
I was thinking maybe there was a way to do "didHitBack" and setting the tab bar's initial view controller to the second one or something, but that all just seems very wrong.
Is there a "proper" way to do this?
To recap I have VC1 and VC2 that are hooked up to a Tab Bar Controller, I have a tableview on VC2 that on didSelectRow I'm going to VC3 which I do not want to be a part of the tabbed view controller, and when I hit back on VC3 I want to go back to VC2.
If you want to build a navigation stack, you should embed your view controller in a UINavigationController
So your tab bar would be hooked up to VC1 and NavVC. The root view controller of NavVC would be VC2.
You can then push a new view controller onto the stack using the navigation controller (or pop the view controller to go back) all within the confines of the tabBar.
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
I am confused with behavior, I have Tab Bar Controller ( I enter on this controller from simple view controller which is embedded in navigation controller). I am confused why is that navigation bar from tab is covered up child navigation bar.
When I start app and I enter at Browse Controller I cannot see Browse title, neither nav bar items which I added programmatically. Can somebody give me clue what is wrong ( I am new to this, I connect with push segue from tab to browse).
Your problem appears to be the same as the one I addressed here:
Push segue from a view controller controlled by UITabBarController
What's happening is that your first NavigationController is creating a Navigation stack. Then you push-segue a TabViewController. That is added to the Nav stack, along with each of it's contained view controllers. However, when you PUSH SEGUE from one of those view controllers to some other view controller, the original navigation controller's stack is the one you are pushing on to. This is not contained inside the tab view controller, so the pushed view controller has no relationship with that tab view controller, just the original navigation controller stack. Therefore the tabs are not present.
The answer is to embed each of the tab controller's view controllers in a new navigation controller, and push on from those. The original navigation controller is just messing things up here...