求解OC如何做到使用拼接字符串创建一系列特定地址的文件

    有没有大神能够解答一下如何往沙盒中创建一系jpg的文件，创建文件名为image1.jpg、image2.jpg、image3.jpg这样，在沙盒的document文件夹下生成文件，谢谢啦！！！    //图片保存的路径
    //这里将图片放在沙盒的documents文件夹中
    NSString * DocumentsPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
    //文件管理器
    NSFileManager *fileManager = [NSFileManager defaultManager];
    
    NSMutableArray *images = [NSMutableArray arrayWithCapacity:[info count]];
    for (NSDictionary *dict in info) {
        if ([dict objectForKey:UIImagePickerControllerMediaType] == ALAssetTypePhoto){
            if ([dict objectForKey:UIImagePickerControllerOriginalImage]){
                UIImage* image=[dict objectForKey:UIImagePickerControllerOriginalImage];
                
                NSData *data;
                if (UIImagePNGRepresentation(image) == nil)
                {
                    data = UIImageJPEGRepresentation(image, 1.0);
                }
                else
                {
                    data = UIImagePNGRepresentation(image);
                }
                
                //关键问题
                [fileManager createDirectoryAtPath:DocumentsPath withIntermediateDirectories:YES attributes:nil error:nil];
                [fileManager createFileAtPath:[DocumentsPath stringByAppendingString:@"/image.jpg"] contents:data attributes:nil];
                filePath = [[NSString alloc]initWithFormat:@"%@%@",DocumentsPath,  @"/image.jpg"];
                            } else {
                NSLog(@"UIImagePickerControllerReferenceURL = %@", dict);
            }
        } else {
            NSLog(@"Uknown asset type");
        }
    }