获取新 Alamofire Swift 3 的请求

Posted 2023-03-15

【中文标题】获取新 Alamofire Swift 3 的请求

【英文标题】：GET request on new Alamofire Swift 3

【发布时间】：2016-10-16 15:02:16

【问题描述】：

所以我决定将我的应用程序迁移到 Swift 3.0，但现在我发现自己无法解决使用新 Alamofire 的 .GET 请求所面临的问题。这是现在的请求：

func getAlbums(_ ID: String, ANN: String, completed: @escaping DownloadComplete) 
        let searchFT = ID.replacingOccurrences(of: " ", with: "+", options: NSString.CompareOptions.literal, range: nil)
        let urlPath = ""
        let url = URL(string: urlPath)

        Alamofire.request(url!, method: .get).responseJSON  response in
            if let JSON = response.result.value as! [String: AnyObject]! 
                if let dict = JSON["results"] as! NSArray! 
                    AlbumsArtist.removeAll()
                    AlbumsArtist = [String]()
                    ImagesArtist.removeAll()
                    ImagesArtist = [String]()
                    for items in dict 


                        if let AT = items["artistName"] as? String 
                            if AT == ANN 
                                if let TN = items["collectionName"] as? String 
                                    AlbumsArtist.append(TN)
                                 else 
                                    AlbumsArtist.append("")
                                

                                if let IM = items["artworkUrl100"] as? String 
                                    let newString = IM.stringByReplacingOccurrencesOfString("100", withString: "600", options: NSStringCompareOptions.LiteralSearch, range: nil)
                                    ImagesArtist.append(newString)
                                 else 
                                    ImagesArtist.append("")
                                
                            
                        




                    

                    completed()

                

            

            
        

我遇到的问题是如果让AT = items["artistName"] as? String 错误说：Type 'NSFastEnumerationIterator.Element (aka: 'Any') has no subscript members

非常感谢！

【问题讨论】：

看这个答案***.com/a/39429455/5327882

@ronatory 已修复！谢谢！

【参考方案1】：

如评论中所述，您应该将代码更改为：

if let AT = items["artistName"] as? [[String:Any]]

但为了让您的代码更安全，您应该使用以下内容：

if let AT = items["artistName"] as? [[String:Any]] 
    if AT == ANN 
        guard let TN = items["collectionName"] as? String,
              let IM = items["artworkUrl100"] as? String else  // Some error occurred 

        AlbumsArtist.append(TN);
        let newString = IM.stringByReplacingOccurrencesOfString("100", withString: "600", options: NSStringCompareOptions.LiteralSearch, range: nil)
        ImagesArtist.append(newString)