SwiftUI Picker onChange or equivalent?

Question

I want to change some other unrelated @State variable when a Picker gets changed but there is no onChanged and it\'s not possible to p

Answer 1

First of all, full credit to ccwasden for the best answer. I had to modify it slightly to make it work for me, so I'm answering this question hoping someone else will find it useful as well.

Here's what I ended up with (tested on iOS 14 GM with Xcode 12 GM)

struct SwiftUIView: View {
    @State private var selection = 0

    var body: some View {
        Picker(selection: $selection, label: Text("Some Label")) {
            ForEach(0 ..< 5) {
                Text("Number \($0)") }
        }.onChange(of: selection) { _ in
            print(selection)
        }
        
    }
}

The inclusion of the "_ in" was what I needed. Without it, I got the error "Cannot convert value of type 'Int' to expected argument type '()'"