DoOnce helper

src/App/Pages/BaseContentPage.cs

@@ -9,6 +9,8 @@ namespace Bit.App.Pages
         protected int AndroidShowModalAnimationDelay = 400;
         protected int AndroidShowPageAnimationDelay = 100;
 
+        public DateTime? LastPageAction { get; set; }
+
         protected void SetActivityIndicator()
         {
             Content = new ActivityIndicator
@@ -54,5 +56,17 @@ namespace Bit.App.Pages
                 Device.BeginInvokeOnMainThread(() => input.Focus());
             });
         }
+
+        protected bool DoOnce(Action action = null, int milliseconds = 1000)
+        {
+            if(LastPageAction.HasValue && (DateTime.UtcNow - LastPageAction.Value).TotalMilliseconds < milliseconds)
+            {
+                // Last action occurred recently.
+                return false;
+            }
+            LastPageAction = DateTime.UtcNow;
+            action?.Invoke();
+            return true;
+        }
     }
 }

src/App/Pages/Vault/CiphersPage.xaml.cs

@@ -76,12 +76,21 @@ namespace Bit.App.Pages
 
         private void GoBack()
         {
+            if(!DoOnce())
+            {
+                return;
+            }
             Navigation.PopModalAsync(false);
         }
 
         private async void RowSelected(object sender, SelectedItemChangedEventArgs e)
         {
             ((ListView)sender).SelectedItem = null;
+            if(!DoOnce())
+            {
+                return;
+            }
+
             if(e.SelectedItem is CipherView cipher)
             {
                 await _vm.SelectCipherAsync(cipher);

src/App/Pages/Vault/GroupingsPage/GroupingsPage.xaml.cs

@@ -74,6 +74,11 @@ namespace Bit.App.Pages
         private async void RowSelected(object sender, SelectedItemChangedEventArgs e)
         {
             ((ListView)sender).SelectedItem = null;
+            if(!DoOnce())
+            {
+                return;
+            }
+
             if(!(e.SelectedItem is GroupingsPageListItem item))
             {
                 return;