SwiftUi: scrolling to last received message - swiftui

Question

Whenever a message is received from the backend, the app should automatically scroll to the beginning of the message. I cannot find a way for this to work. I've tried the stackoverflow solutions here, here and here to no avail.
Here's my code
struct ContentView: View {
#State private var inputText = ""
#State private var messages: [Message] = []
#State private var showThumbsDownSheet = false
#State private var feedbackText = ""
#State private var showThanksForFeedback = false
var body: some View {
VStack {
NavigationView {
ScrollViewReader { scrollView in
List {
ForEach(messages, id: \.id) { message in
Text(message.text)
if !message.isFromUser && message.isReplyFromBackEnd {
HStack {
ThumbsUpButton(message: message)
Spacer()
ThumbsDownButton(message: message, showThumbsDownSheet: $showThumbsDownSheet, reviewText: $feedbackText)
}
}
}
}
.onChange(of: messages) { value in
scrollView.scrollTo(self.messages.count - 1)
}
}
.navigationTitle("Ask Tais")
.toolbar {
ToolbarItemGroup(placement: .navigationBarTrailing) {
Menu {
Button(action: { exit(0) }) {
Label("Quit app", systemImage: "")
}
}
label: {
Label("Add", systemImage: "ellipsis.circle")
}
}
}
}
.onAppear {
// Add a "Hello" message to the list of messages when the app is first opened
self.messages.append(Message(id: UUID(), text: "Hello!", isFromUser: false, isReplyFromBackEnd: false, responseId: "0"))
}
.frame(maxHeight: .infinity)
HStack {
TextField("What do you want to say?", text: $inputText)
Button(action: {
self.messages.append(Message(id: UUID(), text: self.inputText, isFromUser: true, isReplyFromBackEnd: false, responseId:"0"))
sendRequest(with: self.inputText) { responseText, id in
self.messages.append(Message(id: UUID(), text: responseText, isFromUser: false, isReplyFromBackEnd: true, responseId: id))
}
self.inputText = ""
}) {
Text("Ask Tais")
}
}
.padding()
}
}
}

Answer 1

ScrollViewReader and scrollTo does not work on List with changing content. You have to use ScrollView instead of List and build your own list design.