Swiftui Bug - Button (only top part is clickable)

Question

I'm having an issue with SwiftUI where only the top part of the button is clickable, while the bottom part is not clickable at all.

Here is my code snippet. Does anyone know how I can fix this?

struct ContentView: View {
    var body: some View {
        VStack(spacing: 0) {
            ScrollView(.horizontal) {
                HStack {
                    Button(action: {}, label: {
                        ZStack {
                            Color.green
                            Text("Button")
                                .padding(8)
                                .contentShape(Rectangle())
                        }
                    })
                }
            }
            .background(Color.blue)
            .frame(height: 40)
            
            TabView {
                ZStack {
                    Color.yellow
                    Text("my view")
                }
            }
        }
    }
}

I have tried to change the VStack to ZStack, or introduce the Zindex but it isn't helped. The issue is happening with the combination of ScrollView + TabView.

The default TabView is designed to be at the top of the hierarchy. It isn't designed to be a part of a VStack — lorem ipsum
– lorem ipsum, Commented Sep 3, 2024 at 13:02

DonMag · Accepted Answer · 2024-09-03 12:28:57Z

3

I don't work with SwiftUI (only played with it a bit) but after some quick searching...

It appears TabView has an extended "hit-test" area at the top.

For your layout, add a .contentShape modifier:

        TabView {
            ZStack {
                Color.yellow
                Text("my view")
            }
        }
        .contentShape(Rectangle())    // <-- should fix the issue

answered Sep 3, 2024 at 12:28

DonMag

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1 Comment

Chad Chiu Over a year ago

It did solve the issue!!! Great Thanks Sir!

Ben10 · Accepted Answer · 2024-09-03 11:25:19Z

0

The issue you're encountering is likely due to the way the ScrollView and Button are structured in your layout. Specifically, the problem may arise because the Button is inside a ZStack, and its hit area might be constrained or overlapped by other views.

struct ContentView: View {
var body: some View {
    VStack(spacing: 0) {
        ScrollView(.horizontal) {
            HStack {
                Button(action: {
                    print("Button clicked")
                }) {
                    Text("Button")
                        .foregroundColor(.white)
                        .padding(8)
                        .background(Color.green)
                        .cornerRadius(8)
                        .contentShape(Rectangle()) // Ensure the entire area is clickable
                }
                .frame(height: 40) // Set a clear frame for the button
            }
        }
        .background(Color.blue)
        .frame(height: 40)
        
        TabView {
            ZStack {
                Color.yellow
                Text("my view")
            }
        }
    }
}

}

answered Sep 3, 2024 at 11:25

Ben10

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1 Comment

Chad Chiu Over a year ago

I have tried your code but still the bottom part of the button is not clickable.

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