How to change shadow background white to other colors

Question

I\'m trying to change UIPageViewController shadow color while doing a flip animation. But always it displaying white color only. How to change a color of flip s

Answer 1

- (void) renderPageAtIndex:(NSUInteger)index inContext:(CGContextRef)ctx {
UIImage *image = [images objectAtIndex:index];
CGRect imageRect = CGRectMake(0, 0, image.size.width, image.size.height);
CGAffineTransform transform = aspectFit(imageRect,
                                            CGContextGetClipBoundingBox(ctx));
CGContextConcatCTM(ctx, transform);
CGContextDrawImage(ctx, imageRect, [image CGImage]);
}