Master-Detail with UITabBarItem? - ios

Can you embed a Split-View Controller in a UITabBarController? I have a UITabBarController in my appdelegate on the window, and I tried adding a segue to my split view controller, but when I press the correlating tab for the DetailViewController it just shows a blank screen? Is it possible to even have a split-view controller as a tab in a tabbarcontroller?

A UISplitViewController must be at the root of your controller hierarchy. From Apple's Split View Controllers documentation:
A split view controller must always be the root of any interface you
create. In other words, you must always install the view from a
UISplitViewController object as the root view of your application’s
window. The panes of your split view interface may then contain
navigation controllers, tab bar controllers, or any other type of view
controller you need to implement your interface. Split view
controllers cannot be presented modally

Related

Navigation bar is empty, created from storyboard

This is my story board:
Whenever I jump to a view controller embedded in navigation controller, the navigation bar is shown but empty, why?
The sequence I created it is:
connect buttons with destination view controllers
embed destination view controllers in navigation view controller
And the segue I use is present modally - cross dissolve.
The First root controllers of a navigation controller won't have any Back button attached to its navigation bar. You should add an additional View Controller next to any root View Controller of Navigation Controller with Push Segue ( or Show Segue for newer IOS ) to navigate between them.
I tested different segue transition methods with test projects, the answer I got is: if you are transitioning by presenting it modally, you don't get the back button, you only get it by push.

Can I have a SplitViewController inside a TabBarViewController(iOS 9.0 +)?

I have an app with UITabBarViewController as rootviewcontroller. On some tab item, I want to have a SplitViewController inside a UITabbarViewController.
So here my UISplitViewController will become a childViewController for TabbarVC.
Will this be allowed? Are there any Apple guidelines suggesting not to do this?
As I see, they are suggesting to put SplitVC as RootVC. But many applications have already done what we are doing now.
Answers here might help Apple recommends UISplitViewController should always be the rootviewcontroller
I had nearly same scenario of creating a UISplitViewController inside a view controller. So I created my own custom SplitViewController
Here is the note from apple
You cannot push a split view controller onto a navigation stack. Although it is possible to install a split view controller as a child in some other container view controllers, doing is not recommended in most cases. Split view controllers are normally installed at the root of your app’s window.
Apple HIG recommends to have tab bar as the root or split view controller as root. But I still achieved this by putting in a container for one of the tab bar's child view controller. And as a result, you can load split view controller into the container view of any view controller, irrespective of whether its tab bar or a normal view controller.

Storyboard: Views with navigation controller before tabbar issue

I have a little problem related to implementing a tabBar with navigation controllers, when I have two views before the tabBar controller, which also uses a navigation controller.
This is my setup:
Have my separate navigation controller(with two view controllers) be the rootViewController of your window until the user move to tabBar view. Then change it to be the UITabBarController (which does not include the previous view controllers). I do this in my second controller file.
When I tried to flip some view controller which is on tabBar, its showing previous controller view in background while flipping.

parentViewController and presentingViewController both are nil

I have a tabBarController with 5 tabs the third tab is a navigation controller with TableViewController as the root view controller.
When I press on a row on the table view it push a detail view (regular view controller) about the selected row.
The problem is first time parentViewController and presentingViewcontroller properties (in the details page) are set, all other consecutive both properties are set to nil.
EDIT
I created a single tab application with navigation controller same as the one in the picture but I did not disable auto layout in the storyboard, every time parentViewController is set correctly.
I believe this is a bug if you disabled auto layout.
You are neither creating a child view controller, nor presenting a modal.
(Pushing a detail view controller onto a navigation controller's stack is kind of like adding a child, but navigation controllers predate the parent/child view controller mechanism, so they don't use it.)
What you need to check is the navigationController property of your detail view controller. That should be non-nil if it was pushed onto a navigation controller stack.

Initial View Controller on top level of hierarchy loses NavigationBar

I have a hierarchy of 3 TableViewControllers embeded in Navigation Controller and I need to launch on the most detailed level on the top of the hierarchy. If I change 'Is Initial View Controller' in storyboard to the last detailed TableViewController, my app launches with the selected TVC, but with no NavigationBar. How can I launch on the desired level of hierarchy and keep the Navigation Controller managing the stack of views?
Thank you.
You're telling the storyboard that your third view controller is the root view controller--it has no navigation bar. If you want the navigation controller present as the root view controller then you need to make it the initial view controller, then change the navigation's root to your third view controller.
eg:
initial-->[navigation controller]-->[third VC] [first VC]-->[second VC] (keep these around if you want... just disconnect them from the navigation controller)
You would have to select the ViewController that you want as initial and embed it into a NavigationController, and then add all of the other views after that using push segues.
But why do that? Why not just have the first viewcontroller display the data that you will have in the third view controller? you will end up with the same results.
You should also check out this.

Resources