Images can be sent throught conversation system

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

@@ -2,18 +2,24 @@ package org.communiquons.android.comunic.client.data;
 
 import android.content.Context;
 import android.content.res.Resources;
+import android.graphics.Bitmap;
 import android.os.Build;
+import android.support.annotation.NonNull;
 import android.text.Html;
 import android.text.TextUtils;
+import android.util.Base64;
 import android.util.Log;
 import android.util.Patterns;
 
 import org.communiquons.android.comunic.client.R;
 
+import java.io.BufferedReader;
+import java.io.ByteArrayOutputStream;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.InputStreamReader;
 import java.io.OutputStream;
 import java.io.UnsupportedEncodingException;
 import java.security.MessageDigest;
@@ -191,6 +197,48 @@ public class Utilities {
         return count;
     }
 
+    /**
+     * Read an InputStream into a string
+     *
+     * @param is The input stream
+     * @return The string
+     */
+    public static String isToString(InputStream is){
+
+        try {
+            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
+            StringBuilder stringBuilder = new StringBuilder();
+            String line;
+
+            while((line = bufferedReader.readLine()) != null){
+                stringBuilder.append(line);
+            }
+            bufferedReader.close();
+
+            //Return the result
+            return stringBuilder.toString();
+
+        } catch (IOException e){
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    /**
+     * Convert a Bitmap into a base64-encoded string
+     *
+     * @param bitmap The bitmap to convert
+     * @return Encoded string
+     */
+    public static String bitmapToBase64(@NonNull Bitmap bitmap){
+        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
+        bitmap.compress(Bitmap.CompressFormat.PNG, 80, byteArrayOutputStream);
+        byte[] byteArray = byteArrayOutputStream.toByteArray();
+
+        return Base64.encodeToString(byteArray, Base64.DEFAULT);
+    }
+
+
     /**
      * Prepare a string sent through the API to be shown in a TextView element
      *
@@ -265,5 +313,4 @@ public class Utilities {
         }
     }
 
-
 }

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

@@ -83,9 +83,10 @@ public class ConversationMessagesHelper {
      *
      * @param convID Target conversation ID
      * @param message The message to send
+     * @param image Base64 encoded image to include with the message (can be null)
      * @return true in case of success / false else
      */
-    public boolean sendMessage(int convID, String message){
+    public boolean sendMessage(int convID, String message, @Nullable String image){
 
         //Make an API request
         APIRequestParameters params = new APIRequestParameters(mContext,
@@ -93,6 +94,10 @@ public class ConversationMessagesHelper {
         params.addParameter("conversationID", ""+convID);
         params.addParameter("message", message);
 
+        //Include image (if any)
+        if(image != null)
+            params.addParameter("image", "data:image/png;base64," + image);
+
         try {
             new APIRequest().exec(params);
             return true;

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

@@ -1,6 +1,12 @@
 package org.communiquons.android.comunic.client.fragments;
 
+import android.app.AlertDialog;
 import android.app.Fragment;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.net.Uri;
 import android.os.AsyncTask;
 import android.os.Bundle;
 import android.support.annotation.NonNull;
@@ -19,13 +25,18 @@ import org.communiquons.android.comunic.client.data.Account.AccountUtils;
 import org.communiquons.android.comunic.client.data.DatabaseHelper;
 import org.communiquons.android.comunic.client.data.UsersInfo.GetUsersHelper;
 import org.communiquons.android.comunic.client.data.UsersInfo.UserInfo;
+import org.communiquons.android.comunic.client.data.Utilities;
 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;
 
+import java.io.FileNotFoundException;
+import java.io.InputStream;
 import java.util.ArrayList;
 
+import static android.app.Activity.RESULT_OK;
+
 /**
  * Conversation fragment
  *
@@ -38,6 +49,11 @@ import java.util.ArrayList;
 public class ConversationFragment extends Fragment
         implements ConversationRefreshRunnable.onMessagesChangeListener {
 
+    /**
+     * Pick image request number
+     */
+    public static final int PICK_PHOTO = 1;
+
     /**
      * Debug tag
      */
@@ -98,6 +114,16 @@ public class ConversationFragment extends Fragment
      */
     private ImageButton send_button;
 
+    /**
+     * Conversation add image button
+     */
+    private ImageButton pick_image_button;
+
+    /**
+     * New message selected image
+     */
+    private Bitmap new_message_bitmap = null;
+
     /**
      * Get user helper
      */
@@ -125,6 +151,19 @@ public class ConversationFragment extends Fragment
 
     }
 
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+
+        switch (requestCode) {
+
+            //If the response if for the photos
+            case PICK_PHOTO :
+                pick_image_callback(resultCode, data);
+                break;
+        }
+    }
+
     @Nullable
     @Override
     public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
@@ -151,14 +190,31 @@ public class ConversationFragment extends Fragment
 
         //Get new messages input fields
         new_message_content = view.findViewById(R.id.fragment_conversation_newmessage_content);
+        pick_image_button = view.findViewById(R.id.fragment_conversation_newmessage_pickimage);
         send_button = view.findViewById(R.id.fragment_conversation_newmessage_send);
 
+        //Make send button lives
         send_button.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 send_message();
             }
         });
+
+        //Make pick image button lives
+        pick_image_button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                pick_image();
+            }
+        });
+        pick_image_button.setOnLongClickListener(new View.OnLongClickListener() {
+            @Override
+            public boolean onLongClick(View v) {
+                confirm_remove_picked_image();
+                return true;
+            }
+        });
     }
 
     @Override
@@ -248,13 +304,86 @@ public class ConversationFragment extends Fragment
         convMessAdapter.notifyDataSetChanged();
     }
 
+    /**
+     * This method is called when the user request to add an image to a message
+     */
+    private void pick_image(){
+        Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
+        photoPickerIntent.setType("image/*");
+        startActivityForResult(photoPickerIntent, PICK_PHOTO);
+    }
+
+    /**
+     * This method is called to confirm to remove a previously picked image
+     */
+    private void confirm_remove_picked_image(){
+        new AlertDialog.Builder(getActivity())
+                .setTitle(R.string.conversation_message_remove_image_popup_title)
+                .setMessage(R.string.conversation_message_remove_image_popup_message)
+
+                .setNegativeButton(R.string.conversation_message_remove_image_popup_cancel, null)
+
+                .setPositiveButton(R.string.conversation_message_remove_image_popup_confirm,
+                        new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialog, int which) {
+                        remove_picked_image();
+                    }
+                })
+
+                .show();
+    }
+
+    /**
+     * Handles image picker callback
+     *
+     * @param resultCode The result code of the request
+     * @param data The data passed with the intent
+     */
+    private void pick_image_callback(int resultCode, Intent data){
+        //Continue in case of success
+        if(resultCode == RESULT_OK){
+            try {
+
+                Uri imageUri = data.getData();
+                InputStream imageStream = getActivity().getContentResolver()
+                        .openInputStream(imageUri);
+                new_message_bitmap = BitmapFactory.decodeStream(imageStream);
+
+                //Append image
+                pick_image_button.setImageBitmap(new_message_bitmap);
+
+
+            } catch (FileNotFoundException e){
+                e.printStackTrace();
+            }
+        }
+    }
+
+    /**
+     * Remove a previously picked image in the new message form
+     */
+    private void remove_picked_image(){
+
+        //Clean bitmap
+        if(new_message_bitmap != null){
+            new_message_bitmap.recycle();
+            new_message_bitmap = null;
+        }
+
+        //Reset image button
+        pick_image_button.setImageBitmap(null);
+        pick_image_button.setImageDrawable(getActivity().getResources().
+                getDrawable(android.R.drawable.ic_menu_gallery, getActivity().getTheme()));
+    }
+
     /**
      * 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){
+        if(new_message_content.length() < 3 && new_message_bitmap == null){
             Toast.makeText(getActivity(), R.string.conversation_message_err_too_short,
                     Toast.LENGTH_SHORT).show();
             return;
@@ -271,7 +400,9 @@ public class ConversationFragment extends Fragment
 
             @Override
             protected Boolean doInBackground(Void... params) {
-                return convMessHelper.sendMessage(conversation_id, message_content);
+                String message_image = new_message_bitmap == null ?
+                        null : Utilities.bitmapToBase64(new_message_bitmap);
+                return convMessHelper.sendMessage(conversation_id, message_content, message_image);
             }
 
             @Override
@@ -294,9 +425,12 @@ public class ConversationFragment extends Fragment
                     Toast.LENGTH_SHORT).show();
         }
 
-        //Remove previous message in case of succes
+        //Remove previous message in case of success
         if(success){
             new_message_content.setText("");
+
+            //Remove image
+            remove_picked_image();
         }
 
         //Make the "send" button available again

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

@@ -27,10 +27,18 @@
             android:layout_height="wrap_content"
             android:hint="@string/fragment_conversation_new_message_placeholder"/>
 
+        <ImageButton
+            android:id="@+id/fragment_conversation_newmessage_pickimage"
+            android:layout_width="@dimen/fragment_conversation_buttons_width"
+            android:layout_height="@dimen/fragment_conversation_buttons_height"
+            android:src="@android:drawable/ic_menu_gallery"
+            android:scaleType="fitCenter"
+            android:contentDescription="@string/conversation_message_add_image"/>
+
         <ImageButton
             android:id="@+id/fragment_conversation_newmessage_send"
-            android:layout_width="wrap_content"
+            android:layout_width="@dimen/fragment_conversation_buttons_width"
-            android:layout_height="wrap_content"
+            android:layout_height="@dimen/fragment_conversation_buttons_height"
             android:src="@android:drawable/ic_menu_send"
             android:contentDescription="@string/conversation_message_send"/>
 

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

@@ -6,4 +6,8 @@
     <!-- Dimensions for the conversation list -->
     <dimen name="fragment_conversations_list_icon_width">20dp</dimen>
     <dimen name="fragment_conversations_list_icon_height">20dp</dimen>
+
+    <!-- Dimension for the conversation fragment -->
+    <dimen name="fragment_conversation_buttons_height">50dp</dimen>
+    <dimen name="fragment_conversation_buttons_width">50dp</dimen>
 </resources>

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

@@ -54,7 +54,12 @@
     <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_too_short">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>
+    <string name="conversation_message_add_image">Add an image</string>
+    <string name="conversation_message_remove_image_popup_title">Remove image</string>
+    <string name="conversation_message_remove_image_popup_message">Do you want to remove selected image ?</string>
+    <string name="conversation_message_remove_image_popup_confirm">Yes</string>
+    <string name="conversation_message_remove_image_popup_cancel">No</string>
 </resources>