fix to potential crash when reloading database

src/keepass2android/app/App.cs

@@ -475,9 +475,12 @@ namespace keepass2android
 
 			builder.SetMessage(activity.GetString(Resource.String.AskReloadFile));
 
+            bool buttonPressed = false;
+
             builder.SetPositiveButton(activity.GetString(Android.Resource.String.Yes),
 				(dlgSender, dlgEvt) =>
                 {
+                    buttonPressed = true;
 					CurrentDb.ReloadRequested = true;
 					activity.SetResult(KeePass.ExitReloadDb);
 					activity.Finish();
@@ -490,6 +493,7 @@ namespace keepass2android
 
 			builder.SetNegativeButton(activity.GetString(Android.Resource.String.No), (dlgSender, dlgEvt) =>
             {
+                buttonPressed = true;
                 if (actionOnResult != null)
 				{
 					actionOnResult(false);
@@ -502,8 +506,16 @@ namespace keepass2android
 
 			dialog.SetOnDismissListener(new Util.DismissListener(() =>
             {
+				//dismiss can be called when we're calling activity.Finish() during button press.
+				//don't do anything then.
+                if (buttonPressed)
+                    return;
+
                 if (actionOnResult != null)
+                {
                     actionOnResult(false);
+					actionOnResult = null;
+                }
             }));
 
 			dialog.Show();

src/keepass2android/views/PwGroupView.cs

@@ -77,8 +77,13 @@ namespace keepass2android.view
 			AddView(gv, lp);
 		}
 		
-		private void PopulateView(View gv, PwGroup pw) {
+		private void PopulateView(View gv, PwGroup pw)
+        {
 			_pwGroup = pw;
+            Kp2aLog.Log($"Populating group view {_groupBaseActivity.IsFinishing} {pw.Name}");
+
+            if (_groupBaseActivity.IsFinishing)
+                return;
 
             ImageView iv = (ImageView) gv.FindViewById(Resource.Id.icon);
 		    Database db = App.Kp2a.FindDatabaseForElement(pw);