Split UIImage in half?

Question

How would I go about splitting a UIImage In half(down the middle) so it would make two images?

Answer 1

- (void)splitImage:(UIImage *)image
{
    CGFloat imgWidth = image.size.width/2;
    CGFloat imgheight = image.size.height;

    CGRect leftImgFrame = CGRectMake(0, 0, imgWidth, imgheight);
    CGRect rightImgFrame = CGRectMake(imgWidth, 0, imgWidth, imgheight);

    CGImageRef left = CGImageCreateWithImageInRect(image.CGImage, leftImgFrame);
    CGImageRef right = CGImageCreateWithImageInRect(image.CGImage, rightImgFrame);

    // These are the images we want!
    UIImage *leftImage = [UIImage imageWithCGImage:left];
    UIImage *rightImage = [UIImage imageWithCGImage:right];

    // Don't forget to free the memory!
    CGImageRelease(left);
    CGImageRelease(right);
}