Move data hosting from the view to the AppDelegate

swift/CallTutorial/CallTutorial/AppDelegate.swift

@@ -7,9 +7,12 @@
 //
 
 import UIKit
+import SwiftUI
 
 @UIApplicationMain
 class AppDelegate: UIResponder, UIApplicationDelegate {
+	
+    @ObservedObject var tutorialContext = CallExampleContext()
 
 	func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
 		// Override point for customization after application launch.

swift/CallTutorial/CallTutorial/ContentView.swift

@@ -10,7 +10,7 @@ import SwiftUI
 
 struct ContentView: View {
 
-	@ObservedObject var tutorialContext = CallExampleContext()
+	@ObservedObject var tutorialContext : CallExampleContext
 
 	func getCallButtonText() -> String {
 		if (tutorialContext.callRunning) {
@@ -144,6 +144,6 @@ struct ContentView: View {
 
 struct ContentView_Previews: PreviewProvider {
 	static var previews: some View {
-		ContentView()
+		ContentView(tutorialContext: CallExampleContext())
 	}
 }

swift/CallTutorial/CallTutorial/SceneDelegate.swift

@@ -18,8 +18,10 @@ class SceneDelegate: UIResponder, UIWindowSceneDelegate {
 		// If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
 		// This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
 
+        let delegate = UIApplication.shared.delegate as! AppDelegate
+		
 		// Create the SwiftUI view that provides the window contents.
-		let contentView = ContentView()
+        let contentView = ContentView(tutorialContext: delegate.tutorialContext)
 
 		// Use a UIHostingController as window root view controller.
 		if let windowScene = scene as? UIWindowScene {

swift/LoginTutorial/LoginTutorial/AppDelegate.swift

@@ -7,11 +7,12 @@
 //
 
 import UIKit
+import SwiftUI
 
 @UIApplicationMain
 class AppDelegate: UIResponder, UIApplicationDelegate {
-
-
+	
+    @ObservedObject var tutorialContext = LoginTutorialContext()
 
     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
         // Override point for customization after application launch.

swift/LoginTutorial/LoginTutorial/ContentView.swift

@@ -10,7 +10,7 @@ import SwiftUI
 
 struct ContentView: View {
     
-    @ObservedObject var tutorialContext = LoginTutorialContext()
+	@ObservedObject var tutorialContext : LoginTutorialContext
     
     var body: some View {
         
@@ -71,6 +71,6 @@ struct ContentView: View {
 
 struct ContentView_Previews: PreviewProvider {
     static var previews: some View {
-        ContentView()
+        ContentView(tutorialContext: LoginTutorialContext())
     }
 }

swift/LoginTutorial/LoginTutorial/SceneDelegate.swift

@@ -13,14 +13,15 @@ class SceneDelegate: UIResponder, UIWindowSceneDelegate {
 
     var window: UIWindow?
 
-
     func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
         // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
         // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
         // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
-
-        // Create the SwiftUI view that provides the window contents.
-        let contentView = ContentView()
+        
+		let delegate = UIApplication.shared.delegate as! AppDelegate
+		
+		// Create the SwiftUI view that provides the window contents.
+        let contentView = ContentView(tutorialContext: delegate.tutorialContext)
 
         // Use a UIHostingController as window root view controller.
         if let windowScene = scene as? UIWindowScene {