title: Android: clip image to shape
body: <p>(Sorry for my bad english)
  I have two pictures. One picture is colorful and big. On the other picture shows a black figure arbitrary shape (like a cross or a star or a piece of the classic puzzle) on a transparent background.
  I want to put the second picture on the first picture and replace the black with part of the first image. Then i need to save the second image in a new file. </p>
  
  <p>Thank you.
  Max.</p>