ios - 通过 Alamofire 调用 API 但遇到一些问题

Question

我通过 Alamofire 调用 api，并且完美地传递了请求参数。我已经检查过了，但仍然没有得到回复。我收到成功消息，但没有收到响应数据。下面是我的代码，

let API = "http://siestalaminates.com/admin/index.php/Webservice/getcategorybybrandid"
let subcate = ["brand_id": brandid] as [String:Any]
        Alamofire.request(API, method: .post, parameters: subcate ).responseJSON
            {
                response in
                //printing response
                print(response)
                let result = response.result
                // let obj=result
                if let dict = result.value as? Dictionary<String,AnyObject>{
                    if let subdata = dict["data"]{
                        self.subcatelist = subdata as! [AnyObject]
                        self.subcategory_collection.reloadData()

                    }
                }
                self.activityIndicator.stopAnimating()
        }

动态传递品牌 ID::

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        ///print("==>",cateid[indexPath.row] as NSString)

            let vc = self.storyboard?.instantiateViewController(withIdentifier: "ProductsubcategoryViewController") as! ProductsubcategoryViewController

            vc.brandid = (self.brandid[indexPath.row] as NSString) as String?


            self.present(vc, animated: false, completion: nil)
    }

如果我静态传递brand_id，那么我会得到响应，但是当我动态传递它时，它会完美传递，但不会得到响应。

Answer 1

替换以下行:

   let subcate = ["brand_id": brandid] as [String:Any]

与:

   let subcate = ["brand_id": brandid!] as [String:Any]

您遇到的唯一问题似乎是可选值和必需值。我认为您不擅长可选和必需的链接。