title: webview setBackgroundColor when play gif image
body: <p>i want to play gif use web view,default webview  background is white.so i use :</p>
  
  <pre><code>webView.setBackgroundColor(Color.TRANSPARENT);
  </code></pre>
  
  <p>but when i use the above code,my gif can play,but behind of my gif it also draw one pic of gif
  as:</p>
  
  <p><img src="https://i.stack.imgur.com/ItCnb.png" alt="enter image description here"></p>
  
  <p>In the pic you will see a redundant pic at the behind. My original gif pic is like this:</p>
  
  <p><img src="https://ww4.sinaimg.cn/bmiddle/40e72468gw1dvztijw176g.gif" alt="original gif"> </p>
  
  <p>When I was trying to delete <code>webView.setBackgroundColor(Color.TRANSPARENT)</code>, the gif was showing good, but background was white. </p>
  
  <p>When i add the code, my gif always have a a redundant pic of the gif.</p>
  
  <p>So my question is: how can I set my gif background as transparent but not mess up the gif?</p>