以一种简单的方式为TabView tabItem在SwiftUI中添加一个Badge值

struct ContentView: View {
    var body: some View {
        TabView {
            Text("Tab 1")
                .tabItem {
                    Image(systemName: "1.circle")
                    Text("Tab 1")
                }
            
            Text("Tab 2")
                .tabItem {
                    Image(systemName: "2.circle")
                    Text("Tab 2")
                }
        }
    }
}

struct ContentView: View {
    var body: some View {
        TabView {
            Text("Tab 1")
                .tabItem {
                    Image(systemName: "1.circle")
                    Text("Tab 1")
                }
            
            Text("Tab 2")
                .tabItem {
                    ZStack {
                        Image(systemName: "2.circle")
                        Text("Tab 2")
                            .foregroundColor(.white)
                            .padding(5)
                            .background(Color.red)
                            .clipShape(Circle())
                            .offset(x: 20, y: -10)
                    }
                }
        }
    }
}

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