CODEWITHSUNDEEP
swiftuikituisplitviewcontroller
Will
Will

Reputation: 5490

Cannot place UISplitViewController inside UITabBarController

I've read all the other responses to this, and they all seems really old and don't seem to work.

I'm trying to create an application with a UITabBar, and have on of those tabs be a UISplitViewController.

The setup is fairly simple:

let redViewController = UIViewController()
redViewController.view.backgroundColor = .red
            
let blueViewController = UIViewController()
blueViewController.view.backgroundColor = .blue

let splitViewController = UISplitViewController(style: .doubleColumn)
splitViewController.setViewController(redViewController, for: .primary)
splitViewController.setViewController(blueViewController, for: .secondary)

let tabBarController = UITabBarController()
tabBarController.setViewControllers([splitViewController], animated: false)

window?.rootViewController = tabBarController

What I'm expecting

enter image description here

What I get

Secondary Primary
enter image description here enter image description here

Upvotes: 1

Views: 541

Answers (2)

halleygen
halleygen

Reputation: 701

UISplitViewController changed quite a bit in iOS 14 with the introduction of column-style layouts. Column-style split view controllers cannot be embedded in tab bar controllers, but classic style ones can. You create a classic style split view controller by using any initialiser except for init(style:).

For example:

let red: UIViewController = ...
let blue: UIViewController = ...

// Note that the pre-iOS 14 initialiser is being used
let splitViewController = UISplitViewController(nibName: nil, bundle: nil)
splitViewController.viewControllers = [red, blue]
splitViewController.tabBarItem = UITabBarItem(tabBarSystemItem: .bookmarks, tag: 0)

let tabBarController = UITabBarController(nibName: nil, bundle: nil)
tabBarController.viewControllers = [splitViewController]

screenshot

Note that you can't use any of the new API introduced in iOS 14 with classic style split views (eg the triple column layout, split behaviour). If you want to use this new API you'll have to use a sidebar instead of a tab bar.

I reported this problem in Feedback Assistant but apparently it's working as intended. I guess this is Apple's way of favouring sidebar based navigation over tab bar navigation in iPad apps.

Upvotes: 1

dengST30
dengST30

Reputation: 4047

you can see from the storyboard,

Apple seems not to agree

111

Upvotes: 1

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