SwiftUI - Respond to tap AND double tap with different actions

First one prevent second one to perform. So reverse the order of your code:

.onTapGesture(count: 2) {
    print("Double Tap!")
}
.onTapGesture(count: 1) {
    print("Single Tap!")
}

Update: Second solution

Since the above method reported not working in some situationis, you can try using gestures modifier instead:

.gesture(TapGesture(count: 2).onEnded {
    print("double clicked")
})
.simultaneousGesture(TapGesture().onEnded {
    print("single clicked")
})

Text("Tap Me!").gesture(      
TapGesture(count: 2)
    .onEnded({ print("Tapped Twice!”)})
    .exclusively(before:
        TapGesture()
        .onEnded({print("Tapped Once!”) })          
)              

)

This can be achieved with exclusively(before:). It allows for only one gesture to succeed.

.gesture(
    TapGesture(count: 2).onEnded {
        print("DOUBLE TAP")
    }.exclusively(before: TapGesture(count: 1).onEnded {
        print("SINGLE TAP")
    })
)

Link to method documentation https://developer.apple.com/documentation/swiftui/gesture/exclusively(before:)

You can also setup a count for TapGesture like so:

.simultaneousGesture(TapGesture(count: 2).onEnded {
    // double tap logic
})

Per Apple Developer Documentation: https://developer.apple.com/documentation/swiftui/tapgesture

There does not seem to be a simple solution (yet), most of these answers trigger both actions. The workaround I have discovered feels clumsy, but works smoothly:

struct hwsView: View {
    var body: some View {
        VStack {
            Text("HWS")
                .onTapGesture {
                    print("Text single tapped")
                }
        }
        .highPriorityGesture(
            TapGesture(count: 2)
                .onEnded { _ in
                    print("hws double tapped")
                }
        )
    }
}

I had a need for double and triple taps to be recognised on an object but only trigger one of the action closures. I found that the exclusively() API didn't work for me on iOS 15. So, I created this little hack that does what I want.

Struct ContentView: View {
    @State private var isTripleTap = false
    
    var body: some View {
        Text("Button")
            .gesture(
                TapGesture(count: 2).onEnded {
                    Task {
                        try? await Task.sleep(nanoseconds: 200_000_000)
                        
                        if !isTripleTap {
                            print("Double Tap")
                        }
                        
                        isTripleTap = false
                    }
                }
                .simultaneously(
                    with: TapGesture(count: 3).onEnded {
                        isTripleTap = true
                        print("Triple Tap")
                    }
                )
            )
    }
}