simultaneousGesture(_:including:)

Discussion 議論

Use this method when you need to define and process a view specific gesture simultaneously with the same priority as the view’s existing gestures. The example below defines a custom gesture that prints a message to the console and attaches it to the view’s VStack. Inside the VStack is a red heart Image defines its own TapGesture handler that also prints a message to the console and a blue rectangle with no custom gesture handlers.

Tapping or clicking the “heart” image sends two messages to the console: one for the image’s tap gesture handler, and the other from a custom gesture handler attached to the enclosing vertical stack. Tapping or clicking on the blue rectangle results only in the single message to the console from the tap recognizer attached to the VStack:

struct SimultaneousGestureExample: View {
    @State private var message = "Message"
    let newGesture = TapGesture().onEnded {
        print("Gesture on VStack.")
    }


    var body: some View {
        VStack(spacing:25) {
            Image(systemName: "heart.fill")
                .resizable()
                .frame(width: 75, height: 75)
                .padding()
                .foregroundColor(.red)
                .onTapGesture {
                    print("Gesture on image.")
                }
            Rectangle()
                .fill(Color.blue)
        }
        .simultaneousGesture(newGesture)
        .frame(width: 200, height: 200)
        .border(Color.purple)
    }
}