ios三张图片组合一张

- (UIImage *)addImage:(UIImage *)image1 toImage:(UIImage *)image2 {

    UIGraphicsBeginImageContext(image1.size);

    

    // Draw image1

    [image1 drawInRect:CGRectMake(0, 0, 40, 40)];

    

    // Draw image2

    [image2 drawInRect:CGRectMake(40, 0, 40, 40)];

    

    // Draw image2

    [image2 drawInRect:CGRectMake(00, 40, 80, 40)];

    

    UIImage *resultingImage = UIGraphicsGetImageFromCurrentImageContext();

    

    UIGraphicsEndImageContext();

    

    return resultingImage;

}