How to implement sequential gestures using sequenced?

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If you want to collaborate multiple gestures and make them detectable one after another, you can use SwiftUI’s sequenced modifier. To implement combined gestures or sequential gestures you need to create multiple gestures. In this case, the second gesture can be detected only after the first gesture is completed.

As an example, the following code creates a circle with two gestures. After long pressing the circle, you can drag it and the gesture recognisers will be detected one after another.

struct ContentView: View {
    var body: some View {
        let longPressGesture = LongPressGesture()
            .onEnded { _ in
                print("Long press gesture")
            }

        let dragGesture = DragGesture()
            .onEnded { _ in
                print("Drag gesture")
            }

        Circle()
            .fill(Color.red)
            .frame(width: 50, height: 50, alignment: .center)
            .gesture(longPressGesture.sequenced(before: dragGesture))
    }
}

Written by

ISHTIAK AHMED

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