1. Basic use of PreferenceKey preference key 1.1 Create a basic usage view of the preference key PreferenceKeyBootcamp.swift import SwiftUI /// Preferences/Preferences key struct PreferenceKeyBootcamp: View { @State private var text: String = “Hello, world!” var body: some View { NavigationView { VStack { SecondaryScreen(text: text) .navigationTitle(“Navigation Title”) } } .onPreferenceChange(CustomTitlePreferenceKey.self) { value in if […]