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How to make a scroll view move to a location using ScrollViewReader

Paul Hudson    @twostraws   

Updated for Xcode 12.0

New in iOS 14

If you want to programmatically make SwiftUI’s ScrollView move to a specific location, you should embed a ScrollViewReader inside it. This provides a scrollTo() method that can move to any view inside the parent scrollview, just by providing its anchor.

For example, this creates 10 colored boxes in a vertical scroll view, and when you press the button it will scroll directly to the box with ID 8:

struct ContentView: View {
    let colors: [Color] = [.red, .green, .blue]

    var body: some View {
        ScrollView {
            ScrollViewReader { value in
                Button("Jump to #8") {
                    value.scrollTo(8)
                }

                ForEach(0..<10) { i in
                    Text("Example \(i)")
                        .frame(width: 300, height: 300)
                        .background(colors[i % colors.count])
                        .id(i)
                }
            }
        }
    }
}

For more control over your scroll, add an anchor as the second parameter, like this:

value.scrollTo(8, anchor: .top)

Tip: If you call scrollTo() inside withAnimation() the movement will be animated.

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