ios - How to show complete List when keyboard is showing up in SwiftUI

Question

How is it possible to show the complete List when the keyboard is showing up? The keyboard is hiding the lower part of the list.

I have a textField in my list row. When the keyboard shows up it is not possible to scroll down to see the complete list. The keyboard is in front of the list and not "under" the list. This is my coding:

struct ContentView: View {

    @State private var name = ""

    var body: some View {
        List {
            VStack {
                Text("Begin")
                    .frame(width: UIScreen.main.bounds.width)
                    .padding(.bottom, 400)
                    .background(Color.red)

                TextField($name, placeholder: Text("enter text"), onEditingChanged: { _ in
                    //
                }) {
                    //
                }

                Text("End")
                    .frame(width: UIScreen.main.bounds.width)
                    .padding(.top, 400)
                    .background(Color.green)
            }
            .listRowInsets(EdgeInsets())
        }
    }
}

Can anybody help me how I can do this?

Thank you very much.

Answer 1

An alternative implementation of the KeyboardResponder object using Compose, as seen here.

final class KeyboardResponder: ObservableObject {

    let willChange = PassthroughSubject<CGFloat, Never>()

    private(set) var currentHeight: Length = 0 {
        willSet {
            willChange.send(currentHeight)
        }
    }

    let keyboardWillOpen = NotificationCenter.default
        .publisher(for: UIResponder.keyboardWillShowNotification)
        .first() // keyboardWillShow notification may be posted repeatedly
        .map { $0.userInfo![UIResponder.keyboardFrameEndUserInfoKey] as! CGRect }
        .map { $0.height }

    let keyboardWillHide =  NotificationCenter.default
        .publisher(for: UIResponder.keyboardWillHideNotification)
        .map { _ in CGFloat(0) }

    func listen() {
        _ = Publishers.Merge(keyboardWillOpen, keyboardWillHide)
            .subscribe(on: RunLoop.main)
            .assign(to: .currentHeight, on: self)
    }

    init() {
        listen()
    }
}

---

An even nicer method is to pack the above as a ViewModifier (loosely adapted from here):

struct AdaptsToSoftwareKeyboard: ViewModifier {

    @State var currentHeight: Length = 0

    func body(content: Content) -> some View {
        content
            .padding(.bottom, currentHeight)
            .edgesIgnoringSafeArea(currentHeight == 0 ? Edge.Set() : .bottom)
            .onAppear(perform: subscribeToKeyboardEvents)
    }

    private let keyboardWillOpen = NotificationCenter.default
        .publisher(for: UIResponder.keyboardWillShowNotification)
        .map { $0.userInfo![UIResponder.keyboardFrameEndUserInfoKey] as! CGRect }
        .map { $0.height }

    private let keyboardWillHide =  NotificationCenter.default
        .publisher(for: UIResponder.keyboardWillHideNotification)
        .map { _ in Length.zero }

    private func subscribeToKeyboardEvents() {
        _ = Publishers.Merge(keyboardWillOpen, keyboardWillHide)
            .subscribe(on: RunLoop.main)
            .assign(to: .currentHeight, on: self)
    }
}

And then it could be used like this:

Group {

   ........

}.modifier(AdaptsToSoftwareKeyboard())