PM-3349 PM-3350 MAUI Migration fix nullable bindings and fallbacks

src/Core/Pages/Vault/BaseCipherViewModel.cs

@@ -37,7 +37,7 @@ namespace Bit.App.Pages
             set => SetProperty(ref _cipher, value, additionalPropertyNames: AdditionalPropertiesToRaiseOnCipherChanged);
         }
 
-        public string CreationDate => string.Format(AppResources.CreatedXY, Cipher.CreationDate.ToShortDateString(), Cipher.CreationDate.ToShortTimeString());
+        public string CreationDate => string.Format(AppResources.CreatedXY, Cipher?.CreationDate.ToShortDateString(), Cipher?.CreationDate.ToShortTimeString());
 
         public AsyncCommand CheckPasswordCommand { get; }
 

src/Core/Pages/Vault/CipherAddEditPage.xaml

@@ -126,7 +126,7 @@
                         StyleClass="box-label" />
                     <Entry
                         x:Name="_nameEntry"
-                        Text="{Binding Cipher.Name}"
+                        Text="{Binding Cipher.Name, FallbackValue=''}"
                         StyleClass="box-value"
                         AutomationProperties.IsInAccessibleTree="True"
                         SemanticProperties.Description="{u:I18n Name}"
@@ -219,7 +219,7 @@
                             Grid.RowSpan="2"
                             AutomationProperties.IsInAccessibleTree="True"
                             SemanticProperties.Description="{u:I18n GeneratePassword}"
-                            IsVisible="{Binding Cipher.ViewPassword}"
+                            IsVisible="{Binding Cipher.ViewPassword, FallbackValue=False}"
                             AutomationId="RegeneratePasswordButton" />
                     </Grid>
 

src/Core/Pages/Vault/CipherAddEditPageViewModel.cs

@@ -17,6 +17,8 @@ using Microsoft.Maui.Controls;
 using Microsoft.Maui;
 using Bit.App.Utilities;
 
+#nullable enable
+
 namespace Bit.App.Pages
 {
     public class CipherAddEditPageViewModel : BaseCipherViewModel
@@ -883,7 +885,7 @@ namespace Bit.App.Pages
                 Cipher.OrganizationId = OwnershipOptions[OwnershipSelectedIndex].Value;
                 TriggerCipherChanged();
             }
-            if (Cipher.OrganizationId != null)
+            if (Cipher?.OrganizationId != null)
             {
                 var cols = _writeableCollections.Where(c => c.OrganizationId == Cipher.OrganizationId)
                     .Select(c => new CollectionViewModel { Collection = c }).ToList();