iOS 图像处理 － 图像拼接

解决这个问题：将两个图像拼接在一起

前提：须要加入Framework：CoreGraphics.framework

源代码：

- (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;
}

參考：网上资源。链接已丢失