SwiftUI视图在没有输入的情况下自动滚动到底部

import SwiftUI

struct ContentView: View {
    @State private var text = ""

    var body: some View {
        ScrollViewReader { proxy in
            ScrollView {
                VStack {
                    ForEach(0..<100, id: \.self) { index in
                        Text("Line \(index)")
                            .frame(maxWidth: .infinity, alignment: .leading)
                    }
                }
                .padding(.all, 16)
                .background(Color.gray.opacity(0.1))
                .cornerRadius(8)

                TextField("Enter text", text: $text)
                    .textFieldStyle(RoundedBorderTextFieldStyle())
                    .padding(.all, 16)
                    .background(Color.gray.opacity(0.1))
                    .cornerRadius(8)
                    .onChange(of: text) { newValue in
                        proxy.scrollToEnd(animated: true)
                    }
            }
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}