UIStoryboard *storyboard = self.storyboard;
    RANewSlideInViewController *slideViewController = [storyboard instantiateViewControllerWithIdentifier:NSStringFromClass([RANewSlideInViewController class])];
    
    self.modalPresentationStyle = UIModalPresentationCurrentContext;  //***
    
    [self presentViewController:slideViewController animated:NO completion:nil];

    UIStoryboard *storyboard = self.storyboard;
    RANewSlideInViewController *slideViewController = [storyboard instantiateViewControllerWithIdentifier:NSStringFromClass([RANewSlideInViewController class])];
    slideViewController.slideInDirection = RASlideInDirectionLeftToRight;
    
    _subWindow = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
    _subWindow.windowLevel = UIWindowLevelStatusBar;
    _subWindow.rootViewController = slideViewController;
    [_subWindow makeKeyAndVisible];

typedef NS_ENUM(NSInteger, RASlideViewSlideInDirection){
    RASlideInDirectionBottomToTop,
    RASlideInDirectionRightToLeft,
    RASlideInDirectionTopToBottom,
    RASlideInDirectionLeftToRight
};

@interface RASlideInViewController : UIViewController

@property (nonatomic, assign) RASlideViewSlideInDirection slideInDirection; //default RASlideInDirectionBottomToTop;
@property (nonatomic, assign) BOOL shiftBackDropView; //default NO
@property (nonatomic, assign) CGFloat animationDuration; //default .3f
@property (nonatomic, assign) CGFloat backdropViewScaleReductionRatio; //default .9f
@property (nonatomic, assign) CGFloat shiftBackDropViewValue; //default 100.f
@property (nonatomic, assign) CGFloat backDropViewAlpha; //default 0

@end