Iphone 如何保存两张图片，其中一张允许旋转、缩放和；移动

根据我的标题，我有一个2图片，我想把它保存为一张照片

其中一张照片允许用户进行旋转、缩放和移动等手势

如何保存用户移动和旋转的图片

以下代码引用自

试试这段代码

//Hide your views here like save button
    CGRect screenRect = [[UIScreen mainScreen] bounds];
    UIGraphicsBeginImageContext(screenRect.size);
    [self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    UIImageWriteToSavedPhotosAlbum(viewImage, self, nil, nil);  
 //Show again your hidden views here like save button

UIImage *image = nil;

        CGSize newImageSize = CGSizeMake(cropImage.frame.size.width, cropImage.frame.size.height);
        if (UIGraphicsBeginImageContextWithOptions != NULL) {
            UIGraphicsBeginImageContextWithOptions(newImageSize, NO, [[UIScreen mainScreen] scale]);
        } else {
            UIGraphicsBeginImageContext(newImageSize); 
        }

    // Draw image1
    [maskImage.image drawInRect:CGRectMake(0,0, maskImage.frame.size.width,maskImage.frame.size.height)];
    // Draw image2
    [cropImage.image drawInRect:CGRectMake(cropImage.frame.origin.x, cropImage.frame.origin.y, cropImage.frame.size.width, cropImage.frame.size.height)];

    image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    return image;

//Hide your views here like save button
    CGRect screenRect = [[UIScreen mainScreen] bounds];
    UIGraphicsBeginImageContext(screenRect.size);
    [self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    UIImageWriteToSavedPhotosAlbum(viewImage, self, nil, nil);  
 //Show again your hidden views here like save button