在SwiftUI的异步块中修改@State变量是否安全？

struct ContentView: View {
    @State private var isLoading = false
    @State private var data: [String] = []

    var body: some View {
        VStack {
            if isLoading {
                Text("Loading...")
            } else {
                List(data, id: \.self) { item in
                    Text(item)
                }
            }
        }
        .onAppear {
            loadData()
        }
    }

    func loadData() {
        isLoading = true

        DispatchQueue.global().async {
            // 模拟异步加载数据
            Thread.sleep(forTimeInterval: 2)

            DispatchQueue.main.async {
                // 在异步块中修改@State变量
                data = ["Item 1", "Item 2", "Item 3"]
                isLoading = false
            }
        }
    }
}