iOS 13 UISplitView Problems - swift

Question

On iOS 13 Beta 5, I currently have problems with my UISplitView on iPhones.
My app starts with the detailsview off my splitview not with my masterview (look at the picture)
Does anyone know how i can fixed this problem under iOS 13? On iOS 12 everything works like a charm ☹️
Thx in advance Sebastian
Edit:
Sorry for the late answer I was on a short holiday trip without any internet :/
my Class looks like this:
class MyClass : UITableViewController, UISplitViewControllerDelegate, UIPickerViewDelegate {
override func viewDidLoad() {
super.viewDidLoad()
if (UIDevice.current.userInterfaceIdiom == .pad){
navigationController?.navigationBar.isTranslucent = false
}
/*SplitView*/
splitViewController?.preferredDisplayMode = .allVisible
splitViewController?.delegate = self
self.definesPresentationContext = true
}
// SplitView
func splitViewController(_ splitViewController: UISplitViewController, collapseSecondary secondaryViewController: UIViewController, onto primaryViewController: UIViewController) -> Bool {
return true
}
}
I think it's look like the normal procedure for this problem :/

Answer 1

I had the same issue.
After a bit of investigation it seems like viewDidLoad is too late to set it to all visible.
I subclassed the UISplitViewController and changed the setting in awakeFromNib method. Now it is working as expected.

Answer 2

Alxlives's answer helped me. By using the debugger, I notice that in the master view controller, viewDidLoad is not called. So the delegate is never set, thus the collapse method is never called.
I fixed this by setting the delegate in awakeFromNib():
override func awakeFromNib() {
self.splitViewController?.delegate = self
}
Now the splitViewController(_ splitViewController: UISplitViewController, collapseSecondary secondaryViewController: UIViewController, onto primaryViewController: UIViewController) -> Bool is called, and if you return true, the master will be displayed.

Answer 3

Warren Milward's answer helped me to guide me in the right direction, but actually I got it working with viewDidLoad().
I ended up using a subclass for the UISplitViewController and set the required values in viewDidLoad() as well as the delegate calls here.
class CustomSplitViewController: UISplitViewController, UISplitViewControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
self.delegate = self
self.preferredDisplayMode = .allVisible
}
func splitViewController(_ splitViewController: UISplitViewController, collapseSecondary secondaryViewController: UIViewController, onto primaryViewController: UIViewController) -> Bool {
return true
}
}

Answer 4

did you try this one (UISplitViewControllerDelegate):
self.preferredDisplayMode = .allVisible
&
func splitViewController(_ splitViewController: UISplitViewController, collapseSecondary secondaryViewController: UIViewController, onto primaryViewController: UIViewController) -> Bool {
return true;
}

Answer 5

Try MasterViewController_Instance.view.layoutIfNeeded() inside Splitviewcontroller ViewDidLoad() method. It fixed my problem.
class CustomSplitController: UISplitViewController{
override public func viewDidLoad() {
MASTER_CONTROLLER_INSTANCE.view.layoutIfNeeded()
//If you are using navigation controller in master controller try
MASTER_CONTROLLER_INSTANCE.navigationController?.view.layoutIfNeeded()
}
}

Answer 6

I set the spliteViewController's delegate on appdelegate, and it worked

Answer 7

For those who use storyboard and configure the new controller in a subclass from UIStoryboardSegue, it'll be simpler:
just before
[source presentViewController:destination animated:YES completion:nil];,
just set destination.modalPresentationStyle = UIModalPresentationFullScreen;, because the default is now UIModalPresentationPageSheet.

Answer 8

As many answers here leads to change in the Split View Controller starting sequence, I realized, that on compact size it performs vewDidLoad on detail controller ONLY. But awakeFromNib is called on every controller. So - I've just transfer my code from viewDidLoad to awakeFromNib and everything now is works perfectly!
override func awakeFromNib() {
super.awakeFromNib()
if let splitController = splitViewController {
splitController.delegate = self
}
}