Question

I have two instances of UIImage. How can I create a third UIImage that’s just the two original images stitched together? I’d like the first image on top and the second image on the bottom such that the top image’s bottom edge is flush with the bottom image’s top edge.

Answer 1

something like this should work (I havent tested it though)

-(UIImage *)imageWithTopImage:(UIImage *)topImage bottomImage:(UIImage *)bottomImage
{
    UIGraphicsBeginImageContext(CGSizeMake(topImage.size.width, topImage.size.height + bottomImage.size.height);
    [topImage drawInRect:CGRectMake(0, 0, topImage.size.width, topImage.size.height)];
    [bottomImage drawInRect:CGRectMake(0, topImage.size.width, bottomImage.size.width, bottomImage.size.height)];
    UIImage *combinedImage = UIGraphicsGetImageFromCurrentImageContext();    
    UIGraphicsEndImageContext();
    return combinedImage;
}