title: Video sharing with thumbnail and play button, using UIActivityViewController in ios7?
body: <p>Want to share video using UIActivityViewController with its thumbnail and playbutton icon.</p>
  
  <p>I used .mp4 url but facebook shows url not thumbnail.
  how to make possible to show video(thumbnail with play button) on Facebook without using following code, because it doesnt work.   </p>
  
  <pre><code>     ALAsset * asset = [[ALAsset alloc] init];
       [asset setVideoAtPath:urlToVideoFile completionBlock:NULL];
       NSArray * activityItems = @[asset];
       UIActivityViewController * activityController = [[UIActivityViewController alloc] initWithActivityItems:activityItems applicationActivities:NULL]
  </code></pre>