SwiftUI @State var initialization issue

Question

I would like to initialise the value of an @State var in SwiftUI trough the init() method of a Struct, so it can take the proper text

Answer 1

I would try to initialise it in onAppear.

struct StateFromOutside: View {
    let list = [
        "a": "Letter A",
        "b": "Letter B",
        // ...
    ]
    @State var fullText: String = ""

    var body: some View {
        TextField($fullText)
             .onAppear {
                 self.fullText = list[letter]!
             }
    }
}

Or, even better, use a model object (a BindableObject linked to your view) and do all the initialisation and business logic there. Your view will update to reflect the changes automatically.

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Update: BindableObject is now called ObservableObject.