title: layout should take size of background image in android
body: <p>I am working in designing of android and I know I am not good in it, but here is the thing , what I want to do is some thing may be simple or may be not possible , i am setting the background of the layout which is used under the relative layout 
  such as </p>
  
  <p>
  
  <p>what I want is i want my layout fill parent in width and it should take the height as the background height is , I do not want to scale and I also do not want to set height in dps, also for some reasons I do not want t add imageview set image in it and then wrapping the height of layout . </p>
  
  <p>So is there any way to do this ?</p>