You need to use [Introspect](https://github.com/siteline/SwiftUI-Introspect) to receive access to UIScrollView and listen to keyboard height changes.
Here is a code:
import Combine
import Introspect
import SwiftUI
struct SlidingKeyboardTest: View {
@State var inputText = "Placeholder"
@State var keyboardHeight = CGFloat(0)
@State var scrollView: UIScrollView? = nil
var body: some View {
VStack {
ScrollView {
LazyVStack {
ForEach(1 ... 100, id: \.self) { id in
HStack {
Spacer()
Text("message \(id)")
Spacer()
}
}
}
}.introspectScrollView {
scrollView = $0
}
TextEditor(text: $inputText)
.frame(height: 50)
}.onReceive(Publishers.keyboardHeight) { height in
if height > 0 {
self.scrollView!.setContentOffset(CGPoint(x: 0, y: self.scrollView!.contentOffset.y + height), animated: true)
} else {
self.scrollView!.contentOffset.y = max(self.scrollView!.contentOffset.y - keyboardHeight, 0)
}
keyboardHeight = height
}
.background(LinearGradient(gradient: Gradient(colors: [.white, .blue, .white]), startPoint: .top, endPoint: .bottom))
.onTapGesture { UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil) }
}
}
struct SlidingKeyboardTest_Previews: PreviewProvider {
static var previews: some View {
SlidingKeyboardTest()
}
}
You can force the first responder to resign by sending an action to the shared application:
extension UIApplication {
func endEditing() {
sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil)
}
}
Now you can use this method to close the keyboard whenever you desire:
struct ContentView : View {
@State private var name: String = ""
var body: some View {
VStack {
Text("Hello \(name)")
TextField("Name...", text: self.$name) {
// Called when the user tap the return button
// see `onCommit` on TextField initializer.
UIApplication.shared.endEditing()
}
}
}
}
If you want to close the keyboard with a tap out, you can create a full screen white view with a tap action, that will trigger the `endEditing(_:)`:
struct Background<Content: View>: View {
private var content: Content
init(@ViewBuilder content: @escaping () -> Content) {
self.content = content()
}
var body: some View {
Color.white
.frame(width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height)
.overlay(content)
}
}
struct ContentView : View {
@State private var name: String = ""
var body: some View {
Background {
VStack {
Text("Hello \(self.name)")
TextField("Name...", text: self.$name) {
self.endEditing()
}
}
}.onTapGesture {
self.endEditing()
}
}
private func endEditing() {
UIApplication.shared.endEditing()
}
}
