swift - Making Facebook login with new Firebase -

i want implement facebook login new firebase , can't right.

i added cocoapods, went through docs both firebase , facebook. when open simulator this: http://d.pr/i/bvpz/4ibjkx9t

this viewcontroller:

import uikit import fbsdkcorekit import fbsdkloginkit import firebase  class viewcontroller: uiviewcontroller, fbsdkloginbuttondelegate {      let loginbutton: fbsdkloginbutton = fbsdkloginbutton()      override func viewdidload() {         super.viewdidload()          // optional: place button in center of view.         loginbutton.center = self.view.center         loginbutton.readpermissions = ["public_profile", "email", "user_friends"]         loginbutton.delegate = self         view!.addsubview(loginbutton)     }      func loginbutton(loginbutton: fbsdkloginbutton!, didcompletewithresult result: fbsdkloginmanagerloginresult!, error: nserror?) {         if let error = error {             print(error.localizeddescription)             return         }          print("user logged in")     }      func loginbuttondidlogout(loginbutton: fbsdkloginbutton!) {         print("user logged out")     }      func loginbuttonwilllogin(loginbutton: fbsdkloginbutton!) -> bool {         print("user login")         return true     } } 

this appdelegate:

import uikit import firebase import fbsdkloginkit  @uiapplicationmain class appdelegate: uiresponder, uiapplicationdelegate {      var window: uiwindow?       func application(application: uiapplication, didfinishlaunchingwithoptions launchoptions: [nsobject: anyobject]?) -> bool {         firapp.configure()         fbsdkapplicationdelegate.sharedinstance().application(application, didfinishlaunchingwithoptions: launchoptions)         return true     }      func application(application: uiapplication, openurl url: nsurl, sourceapplication: string?, annotation: anyobject) -> bool {         let handled: bool = fbsdkapplicationdelegate.sharedinstance().application(application, openurl: url, sourceapplication: sourceapplication, annotation: annotation)         return handled     }      func applicationwillresignactive(application: uiapplication) {         // sent when application move active inactive state. can occur types of temporary interruptions (such incoming phone call or sms message) or when user quits application , begins transition background state.         // use method pause ongoing tasks, disable timers, , throttle down opengl es frame rates. games should use method pause game.     }      func applicationdidenterbackground(application: uiapplication) {         // use method release shared resources, save user data, invalidate timers, , store enough application state information restore application current state in case terminated later.         // if application supports background execution, method called instead of applicationwillterminate: when user quits.     }      func applicationwillenterforeground(application: uiapplication) {         // called part of transition background inactive state; here can undo many of changes made on entering background.     }      func applicationdidbecomeactive(application: uiapplication) {         // restart tasks paused (or not yet started) while application inactive. if application in background, optionally refresh user interface.         fbsdkappevents.activateapp()     }      func applicationwillterminate(application: uiapplication) {         // called when application terminate. save data if appropriate. see applicationdidenterbackground:.     }   } 

add else loginbutton:didcompletewithresult method. completes login on firebase side. although, wouldn't explain current error.

let credential = firfacebookauthprovider.credentialwithaccesstoken(fbsdkaccesstoken.currentaccesstoken().tokenstring) firauth.auth()?.signinwithcredential(credential, completion: { (user, error) in     if let error = error {         print(error)     } else {         self.signedin(user)     } }) 

as current error, did add url schemes, app id, , app name facebook provides in developer console when create app info.plist? seems me that failing. app needs have permission facebook login.