我正在使用Xcode 6.1.1（6A2008a）。我创建了一个包含Download类的应用程序，这是Download类：
import Foundation
import UIKit
@objc protocol ConnectionDelegate
{
func ConnectionDidFinish(nstate: NSString, nData:NSData, strstatuscode:NSInteger)
func ConnectionDidFail(nstate: NSString, nData:NSString)
}
@objc class MyClass : NSObject,NSURLConnectionDelegate
{
var connDelegate:ConnectionDelegate?
var responseFromServer:NSHTTPURLResponse?
var dataWebService: NSMutableData = NSMutableData()
var activityView = UIActivityIndicatorView()
var strServiceName:NSString = ""
struct Static {
static var instance:MyClass? = nil
static var token:dispatch_once_t = 0
}
required override init() {
}
class func sharedConnectionWithDelegate(delegate:AnyObject)->MyClass
{
Static.instance = self()
Static.instance?.connDelegate=delegate as? ConnectionDelegate
return Static.instance!
}
class func sharedConnection()->MyClass
{
dispatch_once(&Static.token) {
// println("SQLiteDB - Dispatch once")
Static.instance = self()
}
return Static.instance!
}
func GetStartUp(dic:NSDictionary,serviceName:NSString)
{
self.strServiceName = serviceName
self.getData(dic)
}
func getData(dataDict:NSDictionary)
{
ShowNetworkActivityIndicator()
if Reachability.isConnectedToNetwork()
{
let request3=NSMutableURLRequest(URL:NSURL(string: MainUrl)!, cachePolicy: NSURLRequestCachePolicy.UseProtocolCachePolicy, timeoutInterval: 100000.0)
request3.HTTPMethod = "POST"
var dict:NSDictionary? = dataDict
if dict != nil
{
var error: NSError?
var postData:NSData
postData = NSJSONSerialization.dataWithJSONObject(dataDict, options:nil, error: &error)!
var postDataLengthString:NSString = NSString(format:"%d", postData.length)
request3.setValue(postDataLengthString, forHTTPHeaderField: "Content-Length")
request3.HTTPBody=postData
}
request3.setValue("application/x-www-form-urlencoded charset=utf-8", forHTTPHeaderField: "Content-Type")
var connection = NSURLConnection(request: request3, delegate: self, startImmediately: true)
}
else
{
HideNetworkActivityIndicator()
connDelegate?.ConnectionDidFail("Internet connection is not available. Please try again later", nData: "Checking")
}
}
//NSURLConnection delegate method
func connection(didReceiveResponse: NSURLConnection!, didReceiveResponse response: NSURLResponse!)
{
println("get response")
self.responseFromServer=response as? NSHTTPURLResponse
dataWebService.length=0
self.dataWebService = NSMutableData()
}
func connection(connection: NSURLConnection!, didReceiveData data: NSData!)
{
//Append incoming data
println("get part of data")
dataWebService.appendData(data)
}
func connectionDidFinishLoading(connection: NSURLConnection!)
{
println("get Full response data")
HideNetworkActivityIndicator()
var statuscode:Int?=0
statuscode = self.responseFromServer?.statusCode
connDelegate?.ConnectionDidFinish(self.strServiceName, nData:self.dataWebService, strstatuscode:statuscode!)
}
func connection(connection: NSURLConnection!, didFailWithError getError: NSError!)
{
HideNetworkActivityIndicator()
var error:NSError?
println("error during responsestring: %@, \(getError?.description)")
var statuscode:Int?=0
statuscode = self.responseFromServer?.statusCode
if statuscode == 1
{
println("Request Failed Status Code 1")
connDelegate?.ConnectionDidFail("Internet connection is not available. Please try again later", nData: "Checking")
}
else
{
println("Request Failed Status Code unknown")
var responseString:NSString! = NSString(data: self.dataWebService, encoding: NSUTF8StringEncoding)
connDelegate?.ConnectionDidFail(getError.description, nData: responseString)
}
}
我得到这种类型的错误NSURLConnection失败，错误域= NSURLErrorDomain Code = -1005“网络连接丢失。”在Swift iOS8中。
是否可以向我详细说明如何解决或解决此问题？