I need some help figuring out the anatomy of my app.
What I need is a tab bar that also have a top navigation bar. And then each view controller within the tab bar will need to have buttons that can transition in new views within this tab. Does that make sense?
So my question is, how should I set this up. Should it be a main tabarviewcontroller and then each view has a separate nagivationcontroller? Or should it be a navigation controller that has the tab bar as a root. And then just use that navigation controller to do any transitions within the viewcontroller?
Thanks!
Your main view can be a UITabBarController, and you can add your UINavigationControllers to the tab bar viewControllers array. Each navigation controller will have a separate navigation bar and function independently. Clicking on a tab will switch to the appropriate navigation controller.
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.
Currently I have a tab bar controller that is connected to various navigation controllers like this:
I'm trying to navigate from one view controller to another view controller that is in a separate navigation controller. The only way I've been able to figure out how to keep the tab bar from disappearing is to create a modal segue to the original tab bar controller. The only problem doing this it automatically goes to the default tab bar viewcontroller and not the one I'm trying to reach.
So I have a UITabBarController and it has three buttons on the bottom in my iOS app. I want to add another set of buttons at the top but not quite sure on how to do this. I tried adding a UINavigationBar and a navigation button, and adding a view in to it, adding just the buttons, ect.... but to no avail. It won't let me add anything to the UITabBarController. Is there a way to do this?
Thank you very much.
the simplest way to that is to creat 3 buttons side by side and set their frame the way they divide the top of screen to 3 equals. it means u can create a tab bar with buttons manually.
but there's another way. i think this answer would help u
Positioning UITabBar at the top
To use the navigation bar you need a navigation controller. Now depending on your needs your tab bar controller should be inside a navigation controller or the other way around. If you want to be able to navigate away from the tab bar controller (have a screen without the tab bar) you should embed your tab bar controller into a navigation controller. If you only need the navigation bar for some tabs of the tab bar controller or you still want the tab bar to be visible all the time you should embed all (or just the ones than need a navigation bar) your root view controllers for each tab in navigation controllers. Finally if you do not need the navigation behaviour you could just put a regular view in the view controller that needs the bar at the top and some buttons in it and make them look the way you want.
You can embed a view controller in a navigation controller in a storyboard by selecting the view controller and the going to Edit->Embed in->Navigation controller.
Select the Any Tabbar ViewController then above the Menu -> Editor -> Embed In -> Navigation Controller its select, if you get the Navigation Controller then if you add the Navigation Button at Top of the ViewController, example :
I'm working on my first iOS app and I'm realizing just right now that I don't have a navigation controller. Since I'm already pretty far in the app and not completely sure of how I would implement a navigation controller, I was wondering if I would need one in order to implement a search controller, meaning a UITableViewController with like a navigation bar on top.
To implement a Navigation Controller you just need to select the View Controller in storyboard then Click up top Editor -> Embed In -> Navigation Controller. You could also just add a navigation bar to the top of the View Controller you are using.
These are the two options for adding a navigation bar, however, neither is required for adding a search bar.
You do not need to add a navigation controller just to display a navigation bar. Navigation bar can be added to any UIViewController.
You can also add just the search controller in a navigation controller, without affecting your other view controllers. This will add a Navigation bar to the search controller and also allow you to navigate to (Push) other view controllers.