variable.swift6

variable6.swift

struct ContentView: View {
    @State var redraw: Int = 0
    var body: some View {
        SwiftUIView10(refresh: $redraw)
            .onTapGesture {
                print("foo \(redraw)")
                redraw += 1
            }
    }
}

struct SwiftUIView10: View {
    @Binding var refresh:Int
    @State var greeting: String = "X"
    var body: some View {
        Text(greeting)
            .onChange(of: refresh) { ( newValue ) in
                print("newValue \(newValue)")
                switch newValue {
                    case 1:
                        greeting = "Hello, World!"
                    default:
                        greeting = "Next, Word!"
                }
            }
    }
}