Question

您能帮我吗

我正在尝试使用Alamofire从API中提取数据。是否可以在同一请求中提取诸如[“ title”]和Image之类的简单数据，并将其填充到表格视图中？

这是我的代码：

Alamofire.request(baseURL).responseJSON { (response) in
        switch response.result {
        case .success:
            if let value = response.result.value{
                let json = JSON(value)
                json.forEach({ (temp) in
                    let title = temp.1["title"].stringValue
                    let run = temp.1["run"].stringValue
                    let image = temp.1["thumb"].stringValue
                    let newmodel = Schedule(title: title, run: run, image: image)
                    self.scheduleArray.append(newmodel)
                })

            }
        case .failure(let error):
            print(error.localizedDescription)
        }
        DispatchQueue.main.async {
            self.tableView.reloadData()
        }
    }
}

Answer 1

您可以先获取基本数据，然后再获取单个请求的每张图片

使用以下代码获取基本数据：

 func POSTWithLoad(urlString: String,paramaters: [String: AnyObject]? = nil,success:@escaping (_ responseObject: AnyObject?) -> Void ,failure: @escaping (_ error: String?) -> Void ) {

 Alamofire.request(baseUrlDev+urlString, method: .post, parameters:paramaters, encoding: URLEncoding.default, headers: headers).responseJSON(completionHandler: { (responseData) in

            if (responseData.result.error == nil && responseData.result.isSuccess == true) {

            //success

             success(responseData)

            } else {

            //fauiler

            failure("UnKnowen Data")

            }

     })
}

并将其用于getImage：

func getImage(link : String , completion : @escaping (_ imageWithLink : (link : String,image : UIImage)) -> Void){
    var image = UIImage(named: "placeholder")

    URLSession.shared.dataTask(with: NSURL(string: link.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)!)! as URL, completionHandler: { (data, response, error) -> Void in
        if error != nil {
            print("errorLoadIamge : "+link)
            //completion(image)
            print(error)
            return
        }
        DispatchQueue.main.async(execute: { () -> Void in
            let mimage = UIImage(data: data!)
            if(mimage != nil){
                image = mimage!
                completion((link : link , image : image))
                print("successLoadIamge : "+link)
                return
            }
        })

    }).resume()
}

然后可以像这样在您的ViewContoller中使用它：

    let products : [Product] = []
    let productImages : [String] = []

POSTWithLoad(urlString: "YApiLink" , paramaters: requestParameters as [String : AnyObject]?, success: { (successObject) in

            products = Mapper<Product>().mapArray(JSONObject : successObject)
            productsImages = []
            print(successObject)

        }, failure :{ (failureObject) in

            print(failureObject)

        }
        )


    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

        let product = products[indexPath.row]   
     let cell =  YourTableView.dequeueReusableCell(withIdentifier: "CellIdentifier", for: indexPath) as! YourTableViewCell

        if let imageAndLink = productsImages.first(where: { $0.link == cell.product?.productImage})
        {cell.pImage?.image = imageAndLink.image}
        else{ cell.pImage.image =  UIImage(named: "placeholder")
            getImage(link: cell.product?.productImage ?? "", completion: {(newImage) in

                DispatchQueue.main.async {
                    if self.productsImages.first(where: { $0.link == newImage.link}) == nil
                    {
                        self.productsImages.append(ProductImage(link : newImage.link , image : newImage.image) )
                    }
                    if cell.product?.productImage == newImage.link{
                        cell.pImage.image = newImage.image
                    }
                }

            })
        }
}

Alamofire一般要求

1 个答案: