Resolves the problem where the Alamofire library sets the head invalid under IOS7 _ios

The same code under IOS8 No problem, iOS7 can not get the data (will be packet cocoa error 3840 errors), tracking Discovery request head parameter settings regardless of use, according to the text at the bottom of the reference to change the compatibility code:

Code
  private Func Getrequest (Method:method, _ urlstring:urlstringconvertible, Parameters: [string:anyobject]? = nil) -> nsmutableurlrequest {Let
    request = Nsmutableurlrequest (Url:nsurl (string:URLString.URLString)!)
    Request. HttpMethod = method.rawvalue
    If parameters!= nil {
      request. Httpbody = Nsjsonserialization.datawithjsonobject (parameters!, Options:nil, Error:nil)
    }
    Request.setValue ( Api_ua, Forhttpheaderfield: "User-agent")
    Request.setvalue (header_accept, Forhttpheaderfield: "ACCEPT")
    Request.setvalue ("Application/json", Forhttpheaderfield: "Content-type") return
    
    request
  }

Here Api_ua and header_accept change to their head parameters, using the code:

var request:request!
    If Deviceutils.isios7 () {
      request = Mhttpmanager.request (Getrequest (method, URLString, Parameters:parameters))
    else {
      request = Mhttpmanager.request (method, URLString, Parameters:parameters, encoding:parameterencoding . JSON)
    }
    //request.responsejson ....

Code Description:

a), Mhttpmanager is manager.sharedinstance, pay attention don't forget to set mHttpManager.session.configuration.HTTPAdditionalHeaders, under IOS8 still works

Reference:

Setting Custom HTTP Headers in Alamofire with IOS 7 not working (reference post, also try setting nsurlsessionconfiguration but no effect)

The above is the Alamofire library under the iOS set head data collation, hoping to help develop the iOS software students.