Cancellazione attività

Template.Maui/MainPage.xaml.cs

@@ -1,18 +1,21 @@
 using CommunityToolkit.Mvvm.Messaging;
-using Template.Shared.Core.Messages;
+using Template.Shared.Core.Messages.Back;
 
 namespace Template.Maui
 {
     public partial class MainPage : ContentPage
     {
-        public MainPage()
+        private readonly IMessenger _messenger;
+        
+        public MainPage(IMessenger messenger)
         {
             InitializeComponent();
+            _messenger = messenger;
         }
 
         protected override bool OnBackButtonPressed()
         {
-            WeakReferenceMessenger.Default.Send(new HardwareBackMessage("back"));
+            _messenger.Send(new HardwareBackMessage("back"));
             return true;
         }