I have a storyboard-based app based on a split-view. I have edited the split view as shown in the attached screenshot.
My goal is to have a single storyboard that will handle both iPhone and iPad targets, running pre-iOS14 and iOS14+ apps.
This is pretty much working (using the code shown below). But, on iPhone, I want the .primary column to be initially displayed on application launch. Pre-14, I guaranteed this by implementing splitViewController(_:collapseSecondary:onto:). In iOS14, this isn't getting called because the style is not .unspecified. I tried implementing splitViewController(_:topColumnFor:), but it is never called.
Any ideas on how to force the .primary column to be displayed on application launch?
class SplitViewController : UISplitViewController, UISplitViewControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
self.delegate = self
if #available(iOS 14.0, *) {
if UIDevice.current.userInterfaceIdiom == .phone {
show(.primary)
}
} else {
if UIDevice.current.userInterfaceIdiom == .pad {
preferredDisplayMode = .allVisible
}
}
}
// MARK: - Split view
func splitViewController(_ svc: UISplitViewController, willChangeTo displayMode: UISplitViewController.DisplayMode) {
if #available(iOS 14.0, *) {
} else {
if displayMode != .allVisible, self.viewControllers.count > 1 {
if let detailNavController = self.viewControllers[1] as? UINavigationController {
detailNavController.topViewController!.navigationItem.leftBarButtonItem = self.displayModeButtonItem
}
}
}
}
@available(iOS 14.0, *)
func splitViewConntroller(_ svc: UISplitViewController, topColumnFor CollapsingToProposedTopColoum: UISplitViewController.Column) -> UISplitViewController.Column {
return .primary
}
func splitViewController(_ splitViewController: UISplitViewController,
collapseSecondary secondaryViewController:UIViewController,
onto primaryViewController:UIViewController) -> Bool {
return true
}
}
