Fix issue on user information load.

app/src/main/java/org/communiquons/android/comunic/client/ui/fragments/ConversationFragment.java

@@ -356,19 +356,46 @@ public class ConversationFragment extends Fragment
         display_main_progress_bar(false);
         display_not_msg_notice(false);
 
-        final ArrayList<Integer> usersToFetch = new ArrayList<>();
-
         //Add the messages to the the main list of messages
         for(ConversationMessage message : newMessages){
             messagesList.add(message);
-
-            if(!users.containsKey(message.getUser_id()))
-                usersToFetch.add(message.getUser_id());
         }
 
         convMessAdapter.notifyDataSetChanged();
         last_message_id = lastID;
 
+        //Make sure we have got information about all the members of the conversation
+        refreshUserInfo();
+    }
+
+    @Override
+    public void onLoadError() {
+        //Display a toast
+        Toast.makeText(getActivity(), R.string.fragment_conversation_err_load_message,
+                Toast.LENGTH_SHORT).show();
+    }
+
+    /**
+     * Make sure we have got the information about all the users of the conversation
+     */
+    private void refreshUserInfo(){
+
+        if(messagesList == null)
+            return;
+
+        final ArrayList<Integer> usersToFetch = new ArrayList<>();
+
+        //Process the list of messages
+        for(ConversationMessage message : messagesList){
+
+            if(!users.containsKey(message.getUser_id())){
+                if(!usersToFetch.contains(message.getUser_id()))
+                    usersToFetch.add(message.getUser_id());
+            }
+
+        }
+
+
         //Fetch user information if required
         if(usersToFetch.size() > 0){
             new AsyncTask<Void, Void, ArrayMap<Integer, UserInfo>>(){
@@ -386,13 +413,6 @@ public class ConversationFragment extends Fragment
         }
     }
 
-    @Override
-    public void onLoadError() {
-        //Display a toast
-        Toast.makeText(getActivity(), R.string.fragment_conversation_err_load_message,
-                Toast.LENGTH_SHORT).show();
-    }
-
     /**
      * This method is called when we get informations about users
      *
@@ -634,6 +654,9 @@ public class ConversationFragment extends Fragment
         if(mGetOlderMessagesTask != null)
             return;
 
+        //Display progress bar
+        display_main_progress_bar(true);
+
         //Create and execute the task
         mGetOlderMessagesTask = new AsyncTask<Void, Void, ArrayList<ConversationMessage>>(){
 
@@ -664,17 +687,25 @@ public class ConversationFragment extends Fragment
         //Remove link over task
         mGetOlderMessagesTask = null;
 
+        //Remove progress bar
+        display_main_progress_bar(false);
+
         //Check if the list is null (in case of error)
-        if(list == null)
+        if(list == null) {
             return;
+        }
 
         if(list.size() == 0)
             return;
+        Log.v(TAG, "List size: " + list.size());
 
         //Add the messages to the list
         messagesList.addAll(0, list);
 
         //Notify adapter
         convMessAdapter.notifyDataSetChanged();
+
+        //Refresh user information if required
+        refreshUserInfo();
     }
 }

app/src/main/res/layout/fragment_conversation.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:orientation="vertical" android:layout_width="match_parent"
+    android:layout_width="match_parent"
     android:layout_height="match_parent">
 
     <!-- Loading wheel -->
@@ -9,7 +9,8 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_gravity="center"
-        android:layout_marginTop="10dp"/>
+        android:layout_marginTop="10dp"
+        android:layout_centerHorizontal="true"/>
 
     <!-- No message notice -->
     <TextView
@@ -18,7 +19,12 @@
         android:layout_height="wrap_content"
         android:text="@string/fragment_conversation_no_msg"
         android:textAlignment="center"
-        android:layout_marginTop="10dp"/>
+        android:layout_marginTop="70dp" />
+
+    <LinearLayout
+        android:orientation="vertical"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
 
         <!-- Messages -->
         <org.communiquons.android.comunic.client.ui.views.ScrollListView
@@ -68,3 +74,4 @@
         </LinearLayout>
 
     </LinearLayout>
+</RelativeLayout>