Created WebImageView and applyed it to PostAdapter images.

app/src/main/java/org/communiquons/android/comunic/client/ui/adapters/PostsAdapter.java

@@ -24,6 +24,7 @@ import org.communiquons.android.comunic.client.ui.utils.UiUtils;
 import org.communiquons.android.comunic.client.data.utils.Utilities;
 import org.communiquons.android.comunic.client.ui.views.EditCommentContentView;
 import org.communiquons.android.comunic.client.ui.views.LikeButtonView;
+import org.communiquons.android.comunic.client.ui.views.WebImageView;
 
 import java.util.ArrayList;
 
@@ -149,17 +150,23 @@ public class PostsAdapter extends ArrayAdapter<Post>{
         ((TextView) convertView.findViewById(R.id.post_content)).setText(Utilities.prepareStringTextView(post.getContent()));
 
         //Set post image (if any)
-        ImageView postImage = convertView.findViewById(R.id.post_image);
-        postImage.setVisibility(View.GONE);
-        postImage.setImageDrawable(null);
-        ImageLoadHelper.remove(postImage);
+        WebImageView postImage = convertView.findViewById(R.id.post_image);
         if(post.getType() == PostTypes.IMAGE){
 
             //Make image visible
             postImage.setVisibility(View.VISIBLE);
 
             //Load image
-            ImageLoadHelper.load(getContext(), post.getFile_path_url(), postImage);
+            postImage.loadURL(post.getFile_path_url());
+        }
+        else {
+
+            //Hide the image
+            postImage.setVisibility(View.GONE);
+
+            //Remove the image
+            postImage.removeImage();
+
         }
 
         //Set posts likes

app/src/main/java/org/communiquons/android/comunic/client/ui/views/WebImageView.java

@@ -0,0 +1,65 @@
+package org.communiquons.android.comunic.client.ui.views;
+
+import android.content.Context;
+import android.util.AttributeSet;
+
+import org.communiquons.android.comunic.client.R;
+import org.communiquons.android.comunic.client.data.helpers.ImageLoadHelper;
+import org.communiquons.android.comunic.client.ui.utils.UiUtils;
+
+/**
+ * WebImageView is a view that extends image view in order to ease rendering of web images
+ *
+ * @author Pierre HUBERT
+ * Created by pierre on 4/14/18.
+ */
+
+public class WebImageView extends android.support.v7.widget.AppCompatImageView {
+
+    /**
+     * Currently loaded image image
+     */
+    private String mCurrURL;
+
+    public WebImageView(Context context) {
+        super(context);
+    }
+
+    public WebImageView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public WebImageView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    /**
+     * Load an image specified by its URL in the image
+     *
+     * @param url The URL pointing on the image
+     */
+    public void loadURL(String url){
+
+        //Check if the same URL is already being loaded
+        if(url.equals(mCurrURL)){
+            //Do nothing
+            return;
+        }
+
+        //Reset image loader
+        ImageLoadHelper.remove(this);
+        setImageDrawable(UiUtils.getDrawable(getContext(), R.drawable.img_placeholder));
+        ImageLoadHelper.load(getContext(), url, this);
+
+        //Save image URL
+        mCurrURL = url;
+    }
+
+    /**
+     * Remove any image that was being loaded for this view
+     */
+    public void removeImage() {
+        mCurrURL = null;
+        ImageLoadHelper.remove(this);
+    }
+}

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

@@ -70,10 +70,11 @@
     </LinearLayout>
 
     <!-- Post image (if any) -->
-    <ImageView
+    <org.communiquons.android.comunic.client.ui.views.WebImageView
         android:id="@+id/post_image"
         android:layout_width="match_parent"
         android:layout_height="200dp"
+        android:src="@drawable/img_placeholder"
         android:contentDescription="@string/post_image_description"
         android:scaleType="centerInside" />