title: Need help about contentMode and autoresizingMask of UIImageView
body: <p>i have picture like this image it will present on Landscape Mode</p>
  
  <p><img src="https://i708.photobucket.com/albums/ww82/RAGOpoR/landscape.png" alt="alt text"></p>
  
  <p>so if rotate device to Portrait, how to present image like this</p>
  
  <p><img src="https://i708.photobucket.com/albums/ww82/RAGOpoR/protrait.png" alt="alt text"></p>