title: Android Picasso clear image from disk and cache
body: <p>I'm using Picasso for image loading, I use it with <code>NetworkPolicy.OFFLINE</code>, 
  but at some point I want to update the image from internet and I'm trying with</p>
  
  <pre><code>Picasso.with(context).invalidate(url);
  Picasso.with(context).load(url).memoryPolicy(MemoryPolicy.NO_CACHE, MemoryPolicy.NO_STORE).networkPolicy(NetworkPolicy.NO_CACHE);
  </code></pre>
  
  <p>But the image is still taken from disk, only the cache is invalidated.</p>