title: UIImage resize aspect fill and crop
body: <p>I have this code, I take a photo with this size  2448x3264 and i need resize and adjust to display of screen at the top left. sorry for my english thanks</p>
  
  <pre><code>- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
  {
  
      imagenUsr = [info objectForKey:UIImagePickerControllerOriginalImage];
  
      NSLog(@"%f",imagenUsr.size.height);   //2448px
      NSLog(@"%f",imagenUsr.size.width);   //3264px
  
  
  }
  </code></pre>
  
  <p>I need adjust to 320x568 aspect to fill at the top and left of the image taken</p>