如何从后台线程Swift UI GET请求发布更改

import SwiftUI

struct ContentView: View {
    @State private var responseData: String = ""
    
    var body: some View {
        VStack {
            Text(responseData)
                .padding()
            
            Button(action: {
                // 在后台线程中执行GET请求
                DispatchQueue.global().async {
                    // 发起GET请求
                    guard let url = URL(string: "https://example.com/api/data") else { return }
                    URLSession.shared.dataTask(with: url) { (data, response, error) in
                        // 处理响应数据
                        if let data = data {
                            if let responseString = String(data: data, encoding: .utf8) {
                                // 在主线程上更新UI
                                DispatchQueue.main.async {
                                    self.responseData = responseString
                                }
                            }
                        }
                    }.resume()
                }
            }) {
                Text("发起GET请求")
                    .padding()
                    .background(Color.blue)
                    .foregroundColor(.white)
                    .cornerRadius(10)
            }
        }
    }
}

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