title: Fresco Image with both width and height - match_parent doesn't display
body: <p>I have an app which loads an image using the fresco library. I have 2 problems. 
  1. If I use the fresco image like this </p>
  
  <pre><code>&lt;com.facebook.drawee.view.SimpleDraweeView
          android:id="@+id/feedImage"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          /&gt;
  </code></pre>
  
  <p>it won't display anything but a thin line of colors where the image should be. </p>
  
  <p>However if I  do something like </p>
  
  <pre><code>&lt;com.facebook.drawee.view.SimpleDraweeView
          android:id="@+id/feedImage"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          fresco:viewAspectRatio="1.33"
          android:scaleType="fitXY"
          /&gt;
  </code></pre>
  
  <p>everything is working fine(but I don't see the full image). </p>
  
  <p>I want to achieve the same view as facebook(images full width and height). </p>
  
  <ol start="2">
  <li>I load the images in a list in a recycler. The images are loaded into cache(I verified that) but if I go all the way down and then back up I can see the images being loaded(facebook doesn't have this problem and they use the same library). If I scroll really slow there is no problem. I recently changed from volley and I did not have this problem before(so it's not the recycler). How can I solve this ? </li>
  </ol>
  
  <p>Edit: And something else that I noticed is that if I disable the disk cache and kill the app the cache is not deleted as the documentation says. I know that if I call <code>ImagePipeline imagePipeline = Fresco.getImagePipeline(); Uri uri; imagePipeline.evictFromMemoryCache(uri);</code> the cache will be deleted, but shouldn't this be automatically ?</p>