Avoid empty timelines

app/src/main/java/app/fedilab/android/ui/fragment/timeline/FragmentMastodonConversation.java

@@ -87,7 +87,9 @@ public class FragmentMastodonConversation extends Fragment implements Conversati
         super.onResume();
         if (Timeline.TimeLineEnum.CONVERSATION.getValue().compareTo(Helper.getSlugOfFirstFragment(requireActivity(), currentUserID, currentInstance)) != 0 && !isViewInitialized) {
             isViewInitialized = true;
-            initializeConversationCommonView(initialConversations);
+            if (initialConversations != null && initialConversations.conversations != null && initialConversations.conversations.size() > 0) {
+                initializeConversationCommonView(initialConversations);
+            }
         }
     }
 

app/src/main/java/app/fedilab/android/ui/fragment/timeline/FragmentMastodonNotification.java

@@ -297,7 +297,9 @@ public class FragmentMastodonNotification extends Fragment implements Notificati
         super.onResume();
         if (Timeline.TimeLineEnum.NOTIFICATION.getValue().compareTo(Helper.getSlugOfFirstFragment(requireActivity(), currentUserID, currentInstance)) != 0 && !isViewInitialized) {
             isViewInitialized = true;
-            initializeNotificationView(initialNotifications);
+            if (initialNotifications != null && initialNotifications.notifications != null && initialNotifications.notifications.size() > 0) {
+                initializeNotificationView(initialNotifications);
+            }
         }
     }
 

app/src/main/java/app/fedilab/android/ui/fragment/timeline/FragmentMastodonTimeline.java

@@ -154,9 +154,12 @@ public class FragmentMastodonTimeline extends Fragment implements StatusAdapter.
     @Override
     public void onResume() {
         super.onResume();
-        if (slug != null && slug.compareTo(Helper.getSlugOfFirstFragment(requireActivity(), currentUserID, currentInstance)) != 0 && !isViewInitialized) {
+        if (slug != null && slug.compareTo(Helper.getSlugOfFirstFragment(requireActivity(), currentUserID, currentInstance)) != 0
+                && !isViewInitialized) {
             isViewInitialized = true;
-            initializeStatusesCommonView(initialStatuses);
+            if (initialStatuses != null && initialStatuses.statuses != null && initialStatuses.statuses.size() > 0) {
+                initializeStatusesCommonView(initialStatuses);
+            }
         }
         if (timelineStatuses != null && timelineStatuses.size() > 0) {
             route(DIRECTION.FETCH_NEW, true);