ios - Youtube API v3 search.list 返回不相关的视频 Swift

Question

我正在尝试做一些非常简单的事情；在我的应用程序中获得与您搜索 Youtube.com 并按 上传计数 排序时显示的相同的视频结果。

几乎其他一切都正常，我可以:

• 获取缩略图、标题和 channel 名称
• 播放视频

*也在努力获取每个视频的观看次数(我听说您需要 创建两个请求？)

真正让我困惑的是这段代码:

var urlString = "https://www.googleapis.com/youtube/v3/search?
part=snippet
&fields=items(id,snippet(title,channelTitle,thumbnails))
&order=viewCount
&q=\(searchBar.text)
&type=video
&maxResults=25&key=\(apiKey)"

产生这个结果:

而不是像这样:

*不包括播放列表

我的代码有什么问题？

  func searchBarSearchButtonClicked(searchBar: UISearchBar) {

        searchBar.resignFirstResponder()

        // Form the request URL string.
        var urlString = "https://www.googleapis.com/youtube/v3/search?part=snippet&fields=items(id,snippet(title,channelTitle,thumbnails))&order=viewCount&q=\(searchBar.text)&type=video&maxResults=25&key=\(apiKey)"

        urlString = urlString.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet())!

        // Create a NSURL object based on the above string.
        let targetURL = NSURL(string: urlString)

        // Get the results.
        performGetRequest(targetURL, completion: { (data, HTTPStatusCode, error) -> Void in
            if HTTPStatusCode == 200 && error == nil {
                // Convert the JSON data to a dictionary object.
                let resultsDict = (try! NSJSONSerialization.JSONObjectWithData(data!, options: [])) as! Dictionary<NSObject, AnyObject>

                // Get all search result items ("items" array).
                let items: Array<Dictionary<NSObject, AnyObject>> = resultsDict["items"] as! Array<Dictionary<NSObject, AnyObject>>

                // Loop through all search results and keep just the necessary data.
                for var i=0; i<items.count; ++i {
                    let snippetDict = items[i]["snippet"] as! Dictionary<NSObject, AnyObject>
                    //                    let statisticsDict = items[i]["statistics"] as! Dictionary<NSObject, AnyObject>

                    // Create a new dictionary to store the video details.
                    var videoDetailsDict = Dictionary<NSObject, AnyObject>()
                    videoDetailsDict["title"] = snippetDict["title"]
                    videoDetailsDict["channelTitle"] = snippetDict["channelTitle"]
                    videoDetailsDict["thumbnail"] = ((snippetDict["thumbnails"] as! Dictionary<NSObject, AnyObject>)["default"] as! Dictionary<NSObject, AnyObject>)["url"]
                    videoDetailsDict["videoID"] = (items[i]["id"] as! Dictionary<NSObject, AnyObject>)["videoId"]
                    //                    videoDetailsDict["viewCount"] = statisticsDict["viewCount"]

                    self.videosArray.append(videoDetailsDict)

                    // Reload the tableview.
                    self.tableView.reloadData()

                }

            }
            else {
                print("HTTP Status Code = \(HTTPStatusCode)")
                print("Error while loading channel videos: \(error)")
            }

        })

    }


    // MARK: Custom method implementation

    func performGetRequest(targetURL: NSURL!, completion: (data: NSData?, HTTPStatusCode: Int, error: NSError?) -> Void) {
        let request = NSMutableURLRequest(URL: targetURL)
        request.HTTPMethod = "GET"

        let sessionConfiguration = NSURLSessionConfiguration.defaultSessionConfiguration()

        let session = NSURLSession(configuration: sessionConfiguration)

        let task = session.dataTaskWithRequest(request, completionHandler: { (data: NSData?, response: NSURLResponse?, error: NSError?) -> Void in
            dispatch_async(dispatch_get_main_queue(), { () -> Void in
                completion(data: data, HTTPStatusCode: (response as! NSHTTPURLResponse).statusCode, error: error)
            })
        })

        task.resume()
     }

Answer 1

这个问题其实很简单，让我感到宽慰/沮丧。

在 url 中，这是问题所在:

\(searchBar.text)

searchBar.text 是可选的，这就是返回的结果与 youtube.com 搜索不同的原因。简单修复:

\(searchBar.text!)