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我使用NSURL會話來獲取特定網站的HTML代碼。下面的代碼對於iOS(在ViewController.swift中)工作得很好,但在watchOS(在InterfaceController.swift中)總是失敗。代碼總是打印else語句:print(「apple watch:error with loading nsurlsession」)。Swift:NSURL Session不能與watchOS一起使用
有人可以解釋我(爲什麼它失敗了)我怎麼能改變這個?我很感激每一個迴應!
(我使用SWIFT 4.0與iOS 11和watchOS 4.0 - 在模擬器和iPhone上的7配對的Apple腕錶系列2測試)
代碼:
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()
}
您的'print'語句被調用,因爲'if(response as?HTTPURLResponse)!= nil'測試出現錯誤。這可能意味着響應是'nil',或者它不是'HTTPURLResponse'。最有可能的情況是它是'nil',其中'error'變量應該填充一個錯誤來解釋錯誤。這些信息,輕描淡寫,將需要弄清楚爲什麼你的代碼失敗。請將其添加到您的日誌中,併發布結果。 –