这是可能的解决方案-在TabView选择状态周围注入代理绑定，并在设置绑定值之前处理重复的制表符，如下所示。

经过Xcode 12.1 / iOS 14.1测试

struct ContentView: View {
    @State private var selection = 0
    
    var handler: Binding<Int> { Binding(
        get: { self.selection },
        set: {
            if $0 == self.selection {
                print("Reset here!!")
            }
            self.selection = $0
        }
    )}
    
    var body: some View {
        TabView(selection: handler) {
            Text("Tab 1")
                .tabItem {
                    Image(systemName: "star")
                    Text("One")
                }
                .tag(0)
            
            Text("Tab 2")
                .tabItem {
                    Image(systemName: "star.fill")
                }
                .tag(1)
        }
    }
}