oauth 2.0 - AeroGearOAuth2 Swift Retrieve Google Contacts -


i trying make contact management/social network application , using aerogearoauth2 after following tutorial ray wenderlich website. have modified try , first authenticate user, using closure in swift attempting retrieve user's contacts. have used google oauth2 playground play around scopes , url's keep receiving value of 'nil' on inner response. feel must jsut forgetting painfully obvious. wasn't entirely sure how attach header of 'gdata-version:3' winged that. problem. here function retrieve contacts:

    @ibaction func getgooglecontacts(sender: anyobject) {     let googleconfig = googleconfig(         clientid: ${my_client_id},                                        scopes:["https://www.googleapis.com/auth/userinfo.email","https://www.google.com/m8/feeds/contacts/default/full"])      let gdmodule = accountmanager.addgoogleaccount(googleconfig)         self.http.authzmodule = gdmodule                                     let headers = ["gdata-version ": "3.0"]     let contactsurl:string = "https://www.google.com/m8/feeds/contacts/default/full"     let emailurl:string = "https://www.googleapis.com/oauth2/v2/userinfo";      self.http.get(emailurl,completionhandler: {(response, error) in         if (error != nil) {             self.presentalert("error", message: "\(error!.localizeddescription) + \(response)")         } else {             let useremail: anyobject! = response!["email"]!             self.http.get(contactsurl,parameters:headers, completionhandler: {             (response2,error2) in                 if (error != nil) {                     self.presentalert("error",message:"\ (error2!.localizeddescription)" )                 }else {                       println(response2)                  }              })              self.presentalert("success", message: "successfully retrieved contact: + \(useremail)")         }     })


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