Display briefly the messages of a conversation

app/src/main/java/org/communiquons/android/comunic/client/data/conversations/ConversationMessageAdapter.java

@@ -0,0 +1,46 @@
+package org.communiquons.android.comunic.client.data.conversations;
+
+import android.content.Context;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.TextView;
+
+import java.util.ArrayList;
+
+/**
+ * Conversation messages adapter
+ *
+ * @author Pierre HUBERT
+ * Created by pierre on 12/18/17.
+ */
+
+public class ConversationMessageAdapter extends ArrayAdapter<ConversationMessage> {
+
+    /**
+     * Public class constructor
+     *
+     * @param context The context of execution of the application
+     * @param list The dataset
+     */
+    public ConversationMessageAdapter(Context context, ArrayList<ConversationMessage> list){
+        super(context, 0, list);
+    }
+
+
+    @NonNull
+    @Override
+    public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
+
+        if(convertView == null)
+            convertView = LayoutInflater.from(getContext()).
+                inflate(android.R.layout.simple_list_item_1, parent, false);
+
+        ((TextView) convertView).setText(getItem(position).getContent());
+
+        return convertView;
+    }
+}

app/src/main/java/org/communiquons/android/comunic/client/data/conversations/ConversationRefreshRunnable.java

@@ -91,9 +91,10 @@ public class ConversationRefreshRunnable implements Runnable {
         /**
          * Add new messages to a previous list of messages
          *
+         * @param lastID The ID of the latest message downloaded from server
          * @param messages The new messagess
          */
-        void onAddMessage(@NonNull ArrayList<ConversationMessage> messages);
+        void onAddMessage(int lastID, @NonNull ArrayList<ConversationMessage> messages);
 
         /**
          * This method is called when there is not any message in the conversation
@@ -116,6 +117,7 @@ public class ConversationRefreshRunnable implements Runnable {
         Log.v(TAG, "Started conversation refresh runnable.");
 
         synchronized (object) {
+
             //Loop that execute indefinitely until the fragment is stopped
             while (!quit) {
 
@@ -135,7 +137,7 @@ public class ConversationRefreshRunnable implements Runnable {
                 }
 
                 //Get the ID of the last message available in the local database
-                int lastMessageInDb = convMessHelper.getLastIDFromDb(conversation_id);
+                final int lastMessageInDb = convMessHelper.getLastIDFromDb(conversation_id);
 
                 //If the last message in the database is newer than the last message already read
                 if (lastMessageInDb > last_message_id) {
@@ -166,7 +168,7 @@ public class ConversationRefreshRunnable implements Runnable {
                         mActivity.runOnUiThread(new Runnable() {
                             @Override
                             public void run() {
-                                listener.onAddMessage(newMessages);
+                                listener.onAddMessage(lastMessageInDb, newMessages);
                             }
 
 

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

@@ -7,11 +7,13 @@ import android.support.annotation.Nullable;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.ListView;
 import android.widget.Toast;
 
 import org.communiquons.android.comunic.client.R;
 import org.communiquons.android.comunic.client.data.DatabaseHelper;
 import org.communiquons.android.comunic.client.data.conversations.ConversationMessage;
+import org.communiquons.android.comunic.client.data.conversations.ConversationMessageAdapter;
 import org.communiquons.android.comunic.client.data.conversations.ConversationMessagesHelper;
 import org.communiquons.android.comunic.client.data.conversations.ConversationRefreshRunnable;
 
@@ -50,9 +52,9 @@ public class ConversationFragment extends Fragment
     private int last_message_id = 0;
 
     /**
-     * The list of messages
+     * The list of messages of the conversation
      */
-    private ArrayList<ConversationMessage> messagesList;
+    private ArrayList<ConversationMessage> messagesList = new ArrayList<>();
 
     /**
      * Conversation refresh runnable
@@ -64,6 +66,11 @@ public class ConversationFragment extends Fragment
      */
     private ConversationMessagesHelper convMessHelper;
 
+    /**
+     * Conversation messages adapter
+     */
+    private ConversationMessageAdapter convMessAdapter;
+
     @Override
     public void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -93,6 +100,13 @@ public class ConversationFragment extends Fragment
     @Override
     public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
+
+        //Conversation messages listView
+        ListView convMessListView = view.findViewById(R.id.fragment_conversation_messageslist);
+
+        convMessAdapter = new ConversationMessageAdapter(getActivity(), messagesList);
+        convMessListView.setAdapter(convMessAdapter);
+
     }
 
     @Override
@@ -119,8 +133,16 @@ public class ConversationFragment extends Fragment
     }
 
     @Override
-    public void onAddMessage(@NonNull ArrayList<ConversationMessage> messages) {
+    public void onAddMessage(int lastID, @NonNull ArrayList<ConversationMessage> newMessages) {
 
+        //Add the messages to the the main list of messages
+        for(ConversationMessage message : newMessages){
+            messagesList.add(message);
+        }
+
+        convMessAdapter.notifyDataSetChanged();
+
+        last_message_id = lastID;
     }
 
     @Override

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

@@ -3,9 +3,10 @@
     android:orientation="vertical" android:layout_width="match_parent"
     android:layout_height="match_parent">
 
-    <TextView
+    <ListView
-        android:layout_width="wrap_content"
+        android:id="@+id/fragment_conversation_messageslist"
-        android:layout_height="wrap_content"
+        android:layout_width="match_parent"
-        android:text="hello conversation"/>
+        android:layout_height="0dp"
+        android:layout_weight="1" />
 
 </LinearLayout>