2017-09-24 73 views
0

我使用NSURL会话来获取特定网站的HTML代码。下面的代码对于iOS(在ViewController.swift中)工作得很好,但在watchOS(在InterfaceController.swift中)总是失败。代码总是打印else语句:print(“apple watch:error with loading nsurlsession”)。Swift:NSURL Session不能与watchOS一起使用

有人可以解释我(为什么它失败了)我怎么能改变这个?我很感激每一个回应!

(我使用SWIFT 4.0与iOS 11和watchOS 4.0 - 在模拟器和iPhone上的7配对的Apple腕表系列2测试)

代码:

func authorizeBase() { 
    let loginString = NSString(format: "%@:%@", username, password) 
    let loginData: NSData = loginString.data(using: String.Encoding.utf8.rawValue)! as NSData 
    let base64LoginString = loginData.base64EncodedString(options: []) 

    let url: NSURL = NSURL(string: urlPath)! 

    let request: NSMutableURLRequest = NSMutableURLRequest(url: url as URL) 
    request.setValue("Basic \(base64LoginString)", forHTTPHeaderField: "Authorization") 
    request.httpMethod = "GET" 

    let config = URLSessionConfiguration.default 

    config.requestCachePolicy = .reloadIgnoringLocalCacheData //deactivate cache 
    config.urlCache = nil 

    let authString = "Basic \(base64LoginString)" 
    config.httpAdditionalHeaders = ["Authorization" : authString] 
    let session = URLSession(configuration: config) 

    session.dataTask(with: url as URL) { 
     (data, response, error) in 
     if (response as? HTTPURLResponse) != nil { 
      _ = NSString(data: data!, encoding: String.Encoding.utf8.rawValue) 

      let contents = String(data: data!, encoding: .ascii) 

      print("apple watch: Content:", contents!) 
      self.parseHTMLOverview(content: contents!) 

      self.updateTable() //!!! 

     } 
     else { 
      print("apple watch: error with loading nsurlsession") 
     } 

    }.resume() 

} 
+0

您的'print'语句被调用,因为'if(response as?HTTPURLResponse)!= nil'测试出现错误。这可能意味着响应是'nil',或者它不是'HTTPURLResponse'。最有可能的情况是它是'nil',其中'error'变量应该填充一个错误来解释错误。这些信息,轻描淡写,将需要弄清楚为什么你的代码失败。请将其添加到您的日志中,并发布结果。 –

回答

0

感谢的很多关于您的提示Srstka!

经过几个小时的思考,我明白了。我忘了添加“允许任意负载”到WatchKit扩展中的Info.plist。

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