ScrollViewReader | raywenderlich.com

🎓 Courses & Articles
1
This is a companion discussion topic for the original entry at https://www.raywenderlich.com/17314449-swiftui-layout-interfaces/lessons/3
2

Hello, one question.

Why every time I press a button from Toolbar menu the elements change? Is it because of the “randomElement”?

3

And I have another question, I was trying to extract the Toolbar view so the .toolbar modifier in the ContentView struct could fit in one line. This is my attempt:

private struct GenreToolbar: View {
    @Binding var selectedGenre: Genre?
    
    var body: some View {
        ToolbarItem {
            Menu("Genre") {
                ForEach(Genre.list) { genre in
                    Button(genre.name) { selectedGenre = genre }
                }
            }
        }
    }
}

This breaks with the following errors:

Return type of property 'body' requires that 'ToolbarItem<Void, Menu<Text, ForEach<[Genre], some Hashable, Button<Text>>>>' conform to 'View'

Static method 'buildBlock' requires that 'ToolbarItem<Void, Menu<Text, ForEach<[Genre], some Hashable, Button<Text>>>>' conform to 'View'

Any ideas?

4

Yes.

The toolbar modifier doesn’t need a View. It needs a ToolbarContent. So just change both of these to that, and you’re set!

private struct GenreToolbar: View {
    @Binding var selectedGenre: Genre?
    
    var body: some View {