实现图片拼接的iOS代码

实现将两个图像拼接在一起。在使用前需要添加Framework：CoreGraphics.framework

源码：

    - (UIImage *) combine:(UIImage*)leftImage :(UIImage*)rightImage {            CGFloat width = leftImage.size.width * 2;            CGFloat height = leftImage.size.height;            CGSize offScreenSize = CGSizeMake(width, height);                        UIGraphicsBeginImageContext(offScreenSize);                        CGRect rect = CGRectMake(0, 0, width/2, height);            [leftImage drawInRect:rect];                        rect.origin.x += width/2;            [rightImage drawInRect:rect];                        UIImage* imagez = UIGraphicsGetImageFromCurrentImageContext();                        UIGraphicsEndImageContext();                        return imagez;        }