iosswiftkeyboarduikitkeyboard-layout

How to hide bottom safe area when keyboard is shown on iOS 15+ with UIHostingController in UIKit?

I'm using UIHostingController to embed a SwiftUI view (ChatScreenView) into my UIKit app. I want to hide the bottom safe area when the keyboard is shown, and it works perfectly on iOS 17 using hostingController.view.keyboardLayoutGuide.usesBottomSafeArea = false.

Here is the code I’m using:

let chatMainView = ChatScreenView(viewModel: chatViewModel)
let hostingController = UIHostingController(rootView: chatMainView)
addChild(hostingController)
self.view.addSubview(hostingController.view)
hostingController.view.translatesAutoresizingMaskIntoConstraints = false
hostingController.view.keyboardLayoutGuide.usesBottomSafeArea = false // Works on iOS 17
NSLayoutConstraint.activate([
    hostingController.view.leadingAnchor.constraint(equalTo: self.view.leadingAnchor),
    hostingController.view.trailingAnchor.constraint(equalTo: self.view.trailingAnchor),
    hostingController.view.topAnchor.constraint(equalTo: self.view.topAnchor),
    hostingController.view.bottomAnchor.constraint(equalTo: self.view.keyboardLayoutGuide.topAnchor)
])
hostingController.didMove(toParent: self)

This behavior works on iOS 17 with the new keyboardLayoutGuide, but I need a workaround for older iOS versions (my app supports iOS 15+).

How can I achieve this same behavior of hiding the bottom safe area when the keyboard is shown on iOS 15 and 16? Is there an equivalent or alternative approach?

Solution

  • This is fixed. The reason for this problem is IQKeyboardManager. All I had to was disable IQKeyboardManager for this view.