从另一个视图- SwiftUI接收所选的TabView

import SwiftUI

struct ContentView: View {
    @State private var selectedTab = 0
    
    var body: some View {
        VStack {
            TabView(selection: $selectedTab) {
                Text("Tab 1")
                    .tabItem {
                        Image(systemName: "1.circle")
                        Text("Tab 1")
                    }
                    .tag(0)
                
                Text("Tab 2")
                    .tabItem {
                        Image(systemName: "2.circle")
                        Text("Tab 2")
                    }
                    .tag(1)
                
                Text("Tab 3")
                    .tabItem {
                        Image(systemName: "3.circle")
                        Text("Tab 3")
                    }
                    .tag(2)
            }
            
            Text("Selected Tab: \(selectedTab)")
        }
    }
}

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