How do you detect a SwiftUI touchDown event with no movement or duration?

Question

I\'m trying to detect when a finger first makes contact with a view in SwiftUI. I could do this very easily with UIKit Events but can\'t figure this out in SwiftUI.

I

Answer 1

DragGesture was a bit unreliable for me, but LongPressGesture works perfectly. Here is a way to call methods when the GestureState value changes:

@GestureState var longPressGestureState = false

var isTouchedDown: Bool {
    // use this place to call functions when the value changes

    return longPressGestureState
}

var body: View {
    Color(isTouchedDown ? .red : .black)
        .gesture(
            LongPressGesture(minimumDuration: .infinity, maximumDistance: .infinity)
                .updating($longPressGestureState) { value, state, _ in
                    state = value
                }
        )
}