HostingPassthrough
UIHostingController blocks all touches behind it. You basically have to choose SwiftUI, or UIKit? If you want a SwiftUI overlay over a UIKit view for example, you can’t have that.
But SwiftUI and UIKit views deserve to live in harmony.
HostingPassthrough allows you to fix this by inheriting HostingParentController instead of UIViewController in the places where you will be adding SwiftUI views through UIHostingController.
If you don’t want to force your UIHostingControllers to have clear backgrounds, set makeBackgroundsClear = false in viewDidLoad().
Some cool logic will then be applied overriding the hitTest method, which ignores any touches in parts of a UIHostingController that don’t contain a SwiftUI view and pass it to whatever is underneath instead.
All these views are tappable, even behind the 3 UIHostingController’s!
hosting.passthrough.mov
