SwiftUI NavigationBarTitle未更新

import SwiftUI

struct ContentView: View {
    @State private var title = "初始标题"
    
    var body: some View {
        NavigationView {
            VStack {
                Text("视图内容")
                Button(action: {
                    self.title = "更新后的标题"
                    self.objectWillChange.send() // 强制刷新视图
                }) {
                    Text("更新标题")
                }
            }
            .navigationBarTitle(title)
        }
    }
}

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

import SwiftUI

struct ContentView: View {
    @State private var content = "视图内容"
    
    var body: some View {
        NavigationView {
            VStack {
                Text(content)
                Button(action: {
                    self.content = "更新后的内容"
                }) {
                    Text("更新内容")
                }
                NavigationLink(destination: DetailView(content: $content)) {
                    Text("跳转到详情页")
                }
            }
            .navigationBarTitle(Text("标题"))
        }
    }
}

struct DetailView: View {
    @Binding var content: String
    
    var body: some View {
        VStack {
            TextField("请输入内容", text: $content)
                .padding()
                .border(Color.gray)
            Spacer()
        }
        .padding()
        .navigationBarTitle(Text("详情页"))
    }
}

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