First message sent from the Android application

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

@@ -78,6 +78,30 @@ public class ConversationMessagesHelper {
         return true;
     }
 
+    /**
+     * Send a new message to the conversation
+     *
+     * @param convID Target conversation ID
+     * @param message The message to send
+     * @return true in case of success / false else
+     */
+    public boolean sendMessage(int convID, String message){
+
+        //Make an API request
+        APIRequestParameters params = new APIRequestParameters(mContext,
+                "conversations/sendMessage");
+        params.addParameter("conversationID", ""+convID);
+        params.addParameter("message", message);
+
+        try {
+            new APIRequest().exec(params);
+            return true;
+        } catch (Exception e){
+            e.printStackTrace();
+            return false;
+        }
+    }
+
     /**
      * Fetch messages from the database
      *

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

@@ -9,6 +9,8 @@ import android.util.ArrayMap;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.EditText;
+import android.widget.ImageButton;
 import android.widget.ListView;
 import android.widget.Toast;
 
@@ -22,7 +24,6 @@ import org.communiquons.android.comunic.client.data.conversations.ConversationMe
 import org.communiquons.android.comunic.client.data.conversations.ConversationMessagesHelper;
 import org.communiquons.android.comunic.client.data.conversations.ConversationRefreshRunnable;
 
-import java.lang.reflect.Array;
 import java.util.ArrayList;
 
 /**
@@ -87,6 +88,16 @@ public class ConversationFragment extends Fragment
      */
     private ConversationMessageAdapter convMessAdapter;
 
+    /**
+     * Conversation new message content
+     */
+    private EditText new_message_content;
+
+    /**
+     * Conversation new message send button
+     */
+    private ImageButton send_button;
+
     /**
      * Get user helper
      */
@@ -138,6 +149,16 @@ public class ConversationFragment extends Fragment
         //Apply adapter
         convMessListView.setAdapter(convMessAdapter);
 
+        //Get new messages input fields
+        new_message_content = view.findViewById(R.id.fragment_conversation_newmessage_content);
+        send_button = view.findViewById(R.id.fragment_conversation_newmessage_send);
+
+        send_button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                send_message();
+            }
+        });
     }
 
     @Override
@@ -226,4 +247,60 @@ public class ConversationFragment extends Fragment
         //Inform about dataset update
         convMessAdapter.notifyDataSetChanged();
     }
+
+    /**
+     * This method is called when the user click on the "send_message" button
+     */
+    private void send_message(){
+
+        //Check message length
+        if(new_message_content.length() < 3){
+            Toast.makeText(getActivity(), R.string.conversation_message_err_too_short,
+                    Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        //Hide the send button
+        send_button.setVisibility(View.INVISIBLE);
+
+        //Get the message content
+        final String message_content = new_message_content.getText()+"";
+
+        //Send the message
+        new AsyncTask<Void, Void, Boolean>(){
+
+            @Override
+            protected Boolean doInBackground(Void... params) {
+                return convMessHelper.sendMessage(conversation_id, message_content);
+            }
+
+            @Override
+            protected void onPostExecute(Boolean success) {
+                send_callback(success);
+            }
+        }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
+    }
+
+    /**
+     * This method is called in response to a post message request
+     *
+     * @param success Specify wether the message was successfully posted or not
+     */
+    private void send_callback(boolean success){
+
+        //Check for error
+        if(!success){
+            Toast.makeText(getActivity(), R.string.conversation_message_err_send,
+                    Toast.LENGTH_SHORT).show();
+        }
+
+        //Remove previous message in case of succes
+        if(success){
+            new_message_content.setText("");
+        }
+
+        //Make the "send" button available again
+        send_button.setVisibility(View.VISIBLE);
+
+    }
 }

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

@@ -3,6 +3,7 @@
     android:orientation="vertical" android:layout_width="match_parent"
     android:layout_height="match_parent">
 
+    <!-- Messages -->
     <ListView
         android:id="@+id/fragment_conversation_messageslist"
         android:layout_width="match_parent"
@@ -13,4 +14,26 @@
         android:transcriptMode="alwaysScroll"
         />
 
+    <!-- Send messages form -->
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@color/conversation_footer_bg">
+
+        <EditText
+            android:id="@+id/fragment_conversation_newmessage_content"
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:hint="@string/fragment_conversation_new_message_placeholder"/>
+
+        <ImageButton
+            android:id="@+id/fragment_conversation_newmessage_send"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:src="@android:drawable/ic_menu_send"
+            android:contentDescription="@string/conversation_message_send"/>
+
+    </LinearLayout>
+
 </LinearLayout>

app/src/main/res/values/colors.xml

@@ -14,4 +14,7 @@
     <color name="conversation_user_messages_textColor">#FFFFFF</color>
     <color name="conversation_otheruser_messages_background">#D8D8D8</color>
     <color name="conversation_otheruser_messages_textColor">#000000</color>
+
+    <!-- Conversations footer -->
+    <color name="conversation_footer_bg">#8c9eff</color>
 </resources>

app/src/main/res/values/strings.xml

@@ -53,4 +53,8 @@
     <string name="err_get_user_info">Couldn\'t get user information !</string>
     <string name="fragment_conversation_err_load_message">Could not load messages!</string>
     <string name="fragment_conversation_message_image">Conversation message image</string>
+    <string name="conversation_message_send">Send</string>
+    <string name="conversation_message_err_too_short">The length of the message is too short !</string>
+    <string name="conversation_message_err_send">The message could not be sent! Please check your message and try again…</string>
+    <string name="fragment_conversation_new_message_placeholder">New message…</string>
 </resources>