iphone - how to change UITabbar selected color?

Question

according to this post for now, Is apple will also reject this code?

and how to implement what apple will approve?

@interface UITabBar (ColorExtensions)
- (void)recolorItemsWithColor:(UIColor *)color shadowColor:(UIColor *)shadowColor shadowOffset:(CGSize)shadowOffset shadowBlur:(CGFloat)shadowBlur;
@end

@interface UITabBarItem (Private)
@property(retain, nonatomic) UIImage *selectedImage;
- (void)_updateView;
@end

@implementation UITabBar (ColorExtensions)
- (void)recolorItemsWithColor:(UIColor *)color shadowColor:(UIColor *)shadowColor shadowOffset:(CGSize)shadowOffset shadowBlur:(CGFloat)shadowBlur
{
        CGColorRef cgColor = [color CGColor];
        CGColorRef cgShadowColor = [shadowColor CGColor];
        for (UITabBarItem *item in [self items])
                if ([item respondsToSelector:@selector(selectedImage)] &&
                    [item respondsToSelector:@selector(setSelectedImage:)] &&
                    [item respondsToSelector:@selector(_updateView)])
                {
                        CGRect contextRect;
                        contextRect.origin.x = 0.0f;
                        contextRect.origin.y = 0.0f;
                        contextRect.size = [[item selectedImage] size];
                        // Retrieve source image and begin image context
                        UIImage *itemImage = [item image];
                        CGSize itemImageSize = [itemImage size];
                        CGPoint itemImagePosition; 
                        itemImagePosition.x = ceilf((contextRect.size.width - itemImageSize.width) / 2);
                        itemImagePosition.y = ceilf((contextRect.size.height - itemImageSize.height) / 2);
                        UIGraphicsBeginImageContext(contextRect.size);
                        CGContextRef c = UIGraphicsGetCurrentContext();
                        // Setup shadow
                        CGContextSetShadowWithColor(c, shadowOffset, shadowBlur, cgShadowColor);
                        // Setup transparency layer and clip to mask
                        CGContextBeginTransparencyLayer(c, NULL);
                        CGContextScaleCTM(c, 1.0, -1.0);
                        CGContextClipToMask(c, CGRectMake(itemImagePosition.x, -itemImagePosition.y, itemImageSize.width, -itemImageSize.height), [itemImage CGImage]);
                        // Fill and end the transparency layer
                        CGContextSetFillColorWithColor(c, cgColor);
                        contextRect.size.height = -contextRect.size.height;
                        CGContextFillRect(c, contextRect);
                        CGContextEndTransparencyLayer(c);
                        // Set selected image and end context
                        [item setSelectedImage:UIGraphicsGetImageFromCurrentImageContext()];
                        UIGraphicsEndImageContext();
                        // Update the view
                        [item _updateView];
                }
}
@end

Answer 1

Yes, Apple will reject an app if you use that code.

I just had an app rejected for using private API calls. Specifically "_updateView". And I used the exact same code as above.

(If other people say that their app got approved with the same code it's just because it wasn't checked for use of private APIs.)