Question

我的项目存在问题，它一直在:之后请求预期的参数类型。＆安培;预期的分隔符我在上面请求插入它们的问题留下了评论。我很感激你的帮助。

        // expected parameter type following ':' &             expectedseperator ,
        func performGetRequest(targetURL: NSURLRequest, completion: { (data, HTTPStatusCode, error) -> Void in

            if HTTPStatusCode == 200 && error == nil {

            // Convert the JSON data to a dictionary.
            let resultsDict = NSJSONSerialization.JSONObjectWithData(data!, options: nil, error: nil) as! Dictionary<NSObject, AnyObject>

            let items: AnyObject! = resultsDict["items"] as AnyObject!
            let firstItemDict = (items as! Array<AnyObject>)[0] as! Dictionary<NSObject, AnyObject>

            let snippetDict = firstItemDict["snippet"] as! Dictionary<NSObject, AnyObject>

            var desiredValuesDict: Dictionary<NSObject, AnyObject> = Dictionary<NSObject, AnyObject>()
            desiredValuesDict["title"] = snippetDict["title"]
            desiredValuesDict["description"] = snippetDict["description"]
            desiredValuesDict["thumbnail"] = ((snippetDict["thumbnails"] as! Dictionary<NSObject, AnyObject>)["default"] as! Dictionary<NSObject, AnyObject>)["url"]


            desiredValuesDict["playlistID"] = ((firstItemDict["contentDetails"] as! Dictionary<NSObject, AnyObject>)["relatedPlaylists"] as! Dictionary<NSObject, AnyObject>)["uploads"]

            self.channelsDataArray.append(desiredValuesDict)

            self.tblVideos.reloadData()

            ++self.channelIndex
            if self.channelIndex < self.desiredChannelsArray.count {
            self.getChannelDetails(useChannelIDParam)
            }
            else {
            self.viewWait.hidden = true
            }

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

            })
    }        
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

Answer 1

您似乎正在尝试调用函数performGetRequest，但您在开头使用func来定义它。

如果这不是您的意图，也许您正在尝试定义该功能，但您必须小心完成处理程序。你可以看到正确的方法[{3}}。

最后，这是一个具有相同名称和类似问题的here函数。我不知道你的代码是否基于此代码，但可以澄清一下，看一下这个问题及其答案。

Answer 2

var desiredChannelsArray = [“eminemvevo”，“Google”，“disney”]

var channelIndex = 0

var channelsDataArray: Array<Dictionary<NSObject, AnyObject>>.Type?


override func viewDidLoad() {
    super.viewDidLoad()

}  class helper {
    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, response, error) -> Void in
            dispatch_async(dispatch_get_main_queue(), { () -> Void in
                completion(data: data, HTTPStatusCode: (response as! NSHTTPURLResponse).statusCode, error: error)})})


        task.resume()
    }
}

func getChannelDetails(useChannelIDParam: Bool) {
    var urlString: String!
    if !useChannelIDParam {
        urlString = "https://www.googleapis.com/youtube/v3/channels?part=contentDetails,snippet&forUsername=\(desiredChannelsArray[channelIndex])&key=\(apiKey)"
    } else {
    }

    let targetURL = NSURL(string: urlString)

    func performGetRequest(targetURL: NSURL!, completion: (data: NSData?, HTTPStatusCode: Int, error: NSError?) -> Void) {

        if HTTPStatusCode == 200 && error == nil{
            // Convert the JSON data to a dictionary.

            let resultsDict = NSJSONSerialization.JSONObjectWithData(data!, options: nil, error: nil) as! Dictionary<NSObject, AnyObject>}

        let items: AnyObject! = resultsDict["items"] as AnyObject!
        let firstItemDict = (items as! Array<AnyObject>)[0] as! Dictionary<NSObject, AnyObject>

        let snippetDict = firstItemDict["snippet"] as! Dictionary<NSObject, AnyObject>

        var desiredValuesDict: Dictionary<NSObject, AnyObject> = Dictionary<NSObject, AnyObject>()
        desiredValuesDict["title"] = snippetDict["title"]
        desiredValuesDict["description"] = snippetDict["description"]
        desiredValuesDict["thumbnail"] = ((snippetDict["thumbnails"] as! Dictionary<NSObject, AnyObject>)["default"] as! Dictionary<NSObject, AnyObject>)["url"]


        desiredValuesDict["playlistID"] = ((firstItemDict["contentDetails"] as! Dictionary<NSObject, AnyObject>)["relatedPlaylists"] as! Dictionary<NSObject, AnyObject>)["uploads"]

        self.channelsDataArray.append(desiredValuesDict)

        self.tblVideos.reloadData()

        ++self.channelIndex
        if self.channelIndex < self.desiredChannelsArray.count {
            self.getChannelDetails(useChannelIDParam)
        }
        else {
            self.viewWait.hidden = true
        }
    } else {

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

} }

我的swift项目中的编码错误缺少预期/参数和＆amp;＆amp;分离器

2 个答案: