Moving a UIViewController view to line up with the keyboard

viewControllerKeyboard.m

// Moves view to be in line with the keyboard
//
//    keyboardHeight == value returned from UIKeyboardBoundsUserInfoKey key
//    keyboardControlY == place in view the top of the keyboard should line up with
//
- (void)moveViewForKeyboardHeight:(float)keyboardHeight controlOffset:(float)keyboardControlY
{
   // Determine what is "up"
   CGAffineTransform myTransform = self.transform;
   CGPoint upAxis = CGPointApplyAffineTransform(CGPointMake(0, 1), myTransform);
   
   switch (_deviceOrientation)
   {
      case UIDeviceOrientationLandscapeLeft:
      case UIDeviceOrientationLandscapeRight:
         if (!portrait) {
            // make sure control is JUST ABOVE keyboard
            CGPoint transformMul;
            if (upAxis.x > 0) // flip on ios < 8
            {
               transformMul = CGPointMake(-upAxis.x, -upAxis.y);
            }
            else // up is up
            {
               transformMul = CGPointMake(-upAxis.x, -upAxis.y);
            }
            if (keyboardHeight > 0)
            {
               cy = -(keyboardControlY) + keyboardHeight;
               if (cy < 0)
                  cy = 0;
            }
            
            myTransform.tx = cy * transformMul.x;
            myTransform.ty = cy * transformMul.y;
         }
         break;
      default:
         break;
   }
   
   self.transform = myTransform;
}