Xcode 5 & Asset Catalog: How to reference the LaunchImage?

This is the (almost) complete list of the LaunchImage (excluding the iPad images with no status bar):

• LaunchImage-568h@2x.png
• LaunchImage-700-568h@2x.png
• LaunchImage-700-Landscape@2x~ipad.png
• LaunchImage-700-Landscape~ipad.png
• LaunchImage-700-Portrait@2x~ipad.png
• LaunchImage-700-Portrait~ipad.png
• LaunchImage-700@2x.png
• LaunchImage-Landscape@2x~ipad.png
• LaunchImage-Landscape~ipad.png
• LaunchImage-Portrait@2x~ipad.png
• LaunchImage-Portrait~ipad.png
• LaunchImage.png
• LaunchImage@2x.png
• LaunchImage-800-667h@2x.png (iPhone 6)
• LaunchImage-800-Portrait-736h@3x.png (iPhone 6 Plus Portrait)
• LaunchImage-800-Landscape-736h@3x.png (iPhone 6 Plus Landscape)
• LaunchImage-1100-Portrait-2436h@3x.png (iPhone X Portrait)
• LaunchImage-1100-Landscape-2436h@3x.png (iPhone X Landscape)

- (NSString *)splashImageNameForOrientation:(UIInterfaceOrientation)orientation {    CGSize viewSize = self.view.bounds.size;    NSString* viewOrientation = @"Portrait";    if (UIDeviceOrientationIsLandscape(orientation)) {        viewSize = CGSizeMake(viewSize.height, viewSize.width);        viewOrientation = @"Landscape";    }    NSArray* imagesDict = [[[NSBundle mainBundle] infoDictionary] valueForKey:@"UILaunchImages"];    for (NSDictionary* dict in imagesDict) {        CGSize imageSize = CGSizeFromString(dict[@"UILaunchImageSize"]);        if (CGSizeEqualToSize(imageSize, viewSize) && [viewOrientation isEqualToString:dict[@"UILaunchImageOrientation"]])            return dict[@"UILaunchImageName"];    }    return nil;}

The LaunchImages are special, and aren't actually an asset catalog on the device. If you look using iFunBox/iExplorer/etc (or on the simulator, or in the build directory) you can see the final names, and then write code to use them - eg. for an iOS7-only iPhone-only project, this will set the right launch image:

NSString *launchImage;if  ((UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) &&     ([UIScreen mainScreen].bounds.size.height > 480.0f)) {    launchImage = @"LaunchImage-700-568h";} else {    launchImage = @"LaunchImage-700";}[self.launchImageView setImage:[UIImage imageNamed:launchImage]];

I put this into viewDidLoad.

This isn't really ideal, it would be great if Apple would give us a nice API to do this.