Hi fellow SwiftUI developers,
I have a sample view that I'd love to render as a modal window, similar to the Mail message compose window in iPadOS 15:
WindowGroup("general.status", id: "create") {
authorView
}
.handlesExternalEvents(matching: ["starlight://create"])
.commands {
TextEditingCommands()
}
With this setup via handlesExternalEvents(matching:Set<String>), I can get a window to open using openURL with a custom identifier, and I can see the modal option in the multitasking menu. However, when opening this window, it still appears as a full-screen scene.
I noticed that in "Take your iPad apps to the next level (WWDC21)", you can set a presentation style for a window in UIKit by setting the presentation style to UIWindowScene.PresentationStyle.prominent. However, I can't find anything equivalent to this in SwiftUI. Is there a way I can do this in SwiftUI, or call some UIKit code to set the WindowGroup (or the authorView) with that activation condition?
I've reached out to Apple via a TSI about this particular issue. As of the current release of SwiftUI, this isn't possible. They recommend I use the .sheet modifier instead and drop the split window capability. Otherwise, I can create a UISceneDelegate and use UIKit APIs directly:
let options = UIWindowScene.ActivationRequestOptions()
options.preferredPresentationStyle = .prominent
let userActivity = NSUserActivity(activityType: SecondSceneDelegate.sceneUserActivityType)
userActivity.targetContentIdentifier = SecondSceneDelegate.sceneUserActivityType
UIApplication.shared.requestSceneSessionActivation(nil,
userActivity: userActivity,
options: options,
errorHandler: nil)
I do hope to see this improve in the future, though.