An example of using Combine to automatically adapt a SwiftUI scrollable view to accommodate an iOS onscreen keyboard

AdaptsToSoftwareKeyboard.swift

import SwiftUI
import Combine

struct AdaptsToSoftwareKeyboard: ViewModifier {
  @State var currentHeight: CGFloat = 0

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

  private func subscribeToKeyboardEvents() {
    NotificationCenter.Publisher(
      center: NotificationCenter.default,
      name: UIResponder.keyboardWillShowNotification
    ).compactMap { notification in
        notification.userInfo?["UIKeyboardFrameEndUserInfoKey"] as? CGRect
    }.map { rect in
      rect.height
    }.subscribe(Subscribers.Assign(object: self, keyPath: \.currentHeight))

    NotificationCenter.Publisher(
      center: NotificationCenter.default,
      name: UIResponder.keyboardWillHideNotification
    ).compactMap { notification in
      CGFloat.zero
    }.subscribe(Subscribers.Assign(object: self, keyPath: \.currentHeight))
  }
}

KeyboardAwareScrollableView.swift

import SwiftUI

struct KeyboardAwareScrollableView : View {
  @ObjectBinding var venue: SomeDataModel

  var body: some View {
    // Apply to any view with an instrinsic scroll view – ScrollView, Form, List, etc
    Form {
      Section {
        TextField($venue.name, placeholder: Text("Venue Name"))
      }
      Section(header: Text("Address")) {
        TextField($venue.street, placeholder: Text("Street"))
        TextField($venue.city, placeholder: Text("City"))
        TextField($venue.country, placeholder: Text("Country"))
        TextField($venue.postalCode, placeholder: Text("Postcode/ZIP"))
      }
      // etc.
    }
    .navigationBarTitle(Text("New venue"))
    .modifier(AdaptsToSoftwareKeyboard()) // <-- apply the modifier here
  }
}

Great! I've made two changes that some might take as improvements:

1. Extension on View for a cleaner API

extension View {
    var keyboardAware: some View {
        self.modifier(KeyboardAwareScrollableView())
    }
}

Usage

.keyboardAware

2. Edges

Most people probably don't want the edgesIgnoringSafeArea to always be set to .bottom. I think a better solution is to set it to .bottom only when the keyboard is shown.

Solution
Change .edgesIgnoringSafeArea(.bottom) to .edgesIgnoringSafeArea(currentHeight == 0 ? [] : .bottom).

This seems to have resolved my issue. Thank you for putting this together 👍 .

This works perfectly!

You could also add .animation(.default) after .padding(.bottom, currentHeight) to smooth out the transition since it's pretty fast and it's somewhat noticeable.

@jaimeealmanza to go a step further, you can use the following animation to match the keyboard transition more closely:

extension Animation {
    static var keyboard: Animation {
        .interpolatingSpring(mass: 3, stiffness: 1000, damping: 500, initialVelocity: 0.0)
    }
}

Did you notice that this code stopped working with Xcode 12 beta 3 on iOS 14 beta 3? At least for me, it works great on beta 2 and earlier. The notification process seems to work fine but the view doesn't seem to respect the padding. Can't quite figure out why that is. Thanks!

How do you make it scroll a bit higher? I tried this extra padding method but have a chunk of white space instead:

.padding(.bottom, currentHeight == 0 ? 0 : currentHeight + extraPadding)

@ntornado see this tweet.

@ntornado see this tweet.

Thanks, @damirstuhec!

It doesn't work for me unfortunately. I only got ScrollView with 10 textfields. I think scrollview don't respect padding in Xcode 12.5.1

Nice :)

Will this work for TextEditor?

@ethanyuwang did you find a solution for your issue?