title: How to make a double gradient with XML (iphone like)
body: <p>How can I make this kind of drawable gradient with XML? </p>
  
  <p><img src="https://i.stack.imgur.com/FrgFC.png" alt="Double gradient image"></p>
  
  <p>I can do a simple gradient from color A to color B but i don't know how to combine two gradients in the same drawable.</p>