add outputs for NavigationInterfaces

Sandbox/Xamarin/HelloWorld/HelloWorld/HelloWorld/ViewModels/SomeOtherViewModel.cs

@@ -41,10 +41,5 @@ public override void OnNavigatedTo(INavigationParameters parameters)
         {
             base.OnNavigatedTo(parameters);
         }
-
-        public override void OnNavigatingTo(INavigationParameters parameters)
-        {
-            base.OnNavigatingTo(parameters);
-        }
     }
 }

Sandbox/Xamarin/HelloWorld/HelloWorld/HelloWorld/ViewModels/ViewModelBase.cs

@@ -1,24 +1,69 @@
 using System;
+using System.Threading.Tasks;
+using Prism;
+using Prism.AppModel;
 using Prism.Mvvm;
 using Prism.Navigation;
 
 namespace HelloWorld.ViewModels
 {
-    public class ViewModelBase : BindableBase, INavigationAware
+    public class ViewModelBase : BindableBase, INavigationAware, IInitialize, IInitializeAsync, IDestructible, IConfirmNavigation, IConfirmNavigationAsync, IPageLifecycleAware, IActiveAware
     {
-        public virtual void OnNavigatedFrom(INavigationParameters parameters)
+        private bool active;
+        public bool IsActive
         {
-
+            get => active;
+            set => SetProperty(ref active, value, () => Console.WriteLine($"{GetType().Name}: IsActive: {value}"));
         }
 
-        public virtual void OnNavigatedTo(INavigationParameters parameters)
+        public event EventHandler IsActiveChanged;
+
+        public bool CanNavigate(INavigationParameters parameters)
+        {
+            Console.WriteLine($"{GetType().Name}: {nameof(CanNavigate)}");
+            return true;
+        }
+
+        public Task<bool> CanNavigateAsync(INavigationParameters parameters)
+        {
+            Console.WriteLine($"{GetType().Name}: {nameof(CanNavigateAsync)}");
+            return Task.FromResult(true);
+        }
+
+        public void Destroy()
+        {
+            Console.WriteLine($"{GetType().Name}: {nameof(Destroy)}");
+        }
+
+        public void Initialize(INavigationParameters parameters)
+        {
+            Console.WriteLine($"{GetType().Name}: {nameof(Initialize)}");
+        }
+
+        public Task InitializeAsync(INavigationParameters parameters)
         {
-
+            Console.WriteLine($"{GetType().Name}: {nameof(InitializeAsync)}");
+            return Task.CompletedTask;
         }
 
-        public virtual void OnNavigatingTo(INavigationParameters parameters)
+        public void OnAppearing()
+        {
+            Console.WriteLine($"{GetType().Name}: {nameof(OnAppearing)}");
+        }
+
+        public void OnDisappearing()
+        {
+            Console.WriteLine($"{GetType().Name}: {nameof(OnDisappearing)}");
+        }
+
+        public virtual void OnNavigatedFrom(INavigationParameters parameters)
+        {
+            Console.WriteLine($"{GetType().Name}: {nameof(OnNavigatedFrom)}");
+        }
+
+        public virtual void OnNavigatedTo(INavigationParameters parameters)
         {
-
+            Console.WriteLine($"{GetType().Name}: {nameof(OnNavigatedTo)}");
         }
     }
 }