feature: refresh profile

Pixiview/AppShell.xaml

@@ -30,6 +30,9 @@
                        Text="{Binding UserProfileName}" TextColor="{DynamicResource TextColor}"/>
                 <Label Grid.Row="2" VerticalOptions="Center" FontSize="Small"
                        Text="{Binding UserProfileId}" TextColor="{DynamicResource SubTextColor}"/>
+                <ActivityIndicator Grid.RowSpan="3" BackgroundColor="#50000000" Color="White"
+                                   Margin="0, 20, 20, 0"
+                                   IsVisible="{Binding IsLoading}" IsRunning="{Binding IsLoading}"/>
             </Grid>
         </DataTemplate>
     </Shell.FlyoutHeaderTemplate>

Pixiview/AppShell.xaml.cs

@@ -23,6 +23,8 @@ namespace Pixiview
             nameof(UserProfileName), typeof(string), typeof(AppShell), ResourceHelper.Guest);
         public static readonly BindableProperty UserProfileIdProperty = BindableProperty.Create(
             nameof(UserProfileId), typeof(string), typeof(AppShell));
+        public static readonly BindableProperty IsLoadingProperty = BindableProperty.Create(
+            nameof(IsLoading), typeof(bool), typeof(AppShell));
 
         public ImageSource UserProfileImage
         {
@@ -39,6 +41,11 @@ namespace Pixiview
             get => (string)GetValue(UserProfileIdProperty);
             set => SetValue(UserProfileIdProperty, value);
         }
+        public bool IsLoading
+        {
+            get => (bool)GetValue(IsLoadingProperty);
+            set => SetValue(IsLoadingProperty, value);
+        }
 
         public event EventHandler<BarHeightEventArgs> NavigationBarHeightChanged;
         public event EventHandler<BarHeightEventArgs> StatusBarHeightChanged;
@@ -76,12 +83,24 @@ namespace Pixiview
         {
             if (UserProfileId != null)
             {
-                return;
+                if (IsLoading)
+                {
+                    return;
+                }
+                IsLoading = true;
+                Task.Run(() =>
+                {
+                    DoLoginInformation(true);
+                    IsLoading = false;
+                });
             }
-            PushToLogin(()=>
+            else
             {
-                Task.Run(() => DoLoginInformation(true));
+                PushToLogin(() =>
-            });
+                {
+                    Task.Run(() => DoLoginInformation(true));
+                });
+            }
         }
 
         private bool isLoginOpened;