エラーは受け取っ：エラードメイン= com.facebook.sdk.coreコード= 8「（ヌル）」

Question

こんにちは私はこのエラーを取得しておいてください。私はXcodeの8を使用してプログラミングする場合

Error recieved: Error Domain=com.facebook.sdk.core Code=8 "(null)" 

私のプロジェクトが正常に動作し、 swift 3.しかし今、私はxcode 7.3.1とswift 2.3を使用するようにダウングレードしました。このエラーが発生します。以下は

私appdelegateファイルされる：

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject : AnyObject]?) -> Bool { 

     let viewController = ViewController(nibName: nil, bundle: nil) 
     viewController.view.backgroundColor = UIColor.whiteColor() 
     let navController:UINavigationController = UINavigationController(rootViewController: viewController) 

     self.window = UIWindow(frame: UIScreen.mainScreen().bounds) 
     self.window?.backgroundColor = UIColor.darkGrayColor() 
     self.window?.rootViewController = navController 
     self.window!.makeKeyAndVisible() 

     //facebook 
     FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions) 

     //Google 
     var error: NSError? 
     GGLContext.sharedInstance().configureWithError(&error) 
     assert(error == nil, "Error Configuring google services \(error)") 
     GIDSignIn.sharedInstance().delegate = self 

     return true 
    } 

func application(app: UIApplication, openURL url: NSURL, options: [String : AnyObject]) -> Bool { 
     return GIDSignIn.sharedInstance().handleURL(url, sourceApplication: options[UIApplicationOpenURLOptionsSourceApplicationKey] as! String, annotation: options[UIApplicationOpenURLOptionsAnnotationKey]) 
    } 

    func application(application: UIApplication, openURL url: NSURL, sourceApplication: String?, annotation: AnyObject) -> Bool { 
     return FBSDKApplicationDelegate.sharedInstance().application(application, openURL: url, sourceApplication: sourceApplication, annotation: annotation) 
    } 

    func signIn(signIn: GIDSignIn!, didSignInForUser user: GIDGoogleUser!, withError error: NSError!) { 

     if error != nil { 
      print ("Error sigining in: \(error.localizedDescription)") 
      return 
     } 
    } 

SignInController.swiftファイル：

class SignInController: UIViewController, FBSDKLoginButtonDelegate, GIDSignInUIDelegate, GIDSignInDelegate { 
    //starts here 
    let fbButton:FBSDKLoginButton = { 
     let button = FBSDKLoginButton() 
     button.readPermissions = ["public_profile", "email", "user_friends"] 
     return button 
    }() 

    override func viewDidLoad() { 
     super.viewDidLoad() 

     self.title = "Sign In" 
     self.view.backgroundColor = UIColor.whiteColor() 

     if FBSDKAccessToken.currentAccessToken() == nil { 
      print("I got token: \(FBSDKAccessToken.currentAccessToken()?.tokenString)") 
      view.addSubview(fbButton) 
      fbButton.center = view.center 
      fbButton.delegate = self 
      self.fetchprofile() 
     } 

     else { 
      print("Dont have token") 
      self.view.addSubview(fbButton) 
      fbButton.center = self.view.center 
      fbButton.delegate = self 
      } 

     GIDSignIn.sharedInstance().uiDelegate = self 
     GIDSignIn.sharedInstance().delegate = self 
     let googleButton = GIDSignInButton(frame: CGRect(x: 30, y: 150, width: 100, height: 50)) 
     view.addSubview(googleButton) 
    } 

    override func didReceiveMemoryWarning() { 
     super.didReceiveMemoryWarning() 
     // Dispose of any resources that can be recreated. 
    } 

    func loginButton(loginButton: FBSDKLoginButton!, didCompleteWithResult result: FBSDKLoginManagerLoginResult!, error: NSError!) { 
     if error != nil { 
      print(error.localizedDescription) 
      return 
     } 
     print("I'm in") 
     fetchprofile() 
    } 

    func fetchprofile() { 

     print("Getting profile") 
     print("FB version: \(FBSDKSettings.sdkVersion())") 
     print("Tokensssss: \(FBSDKAccessToken.currentAccessToken()?.tokenString)") 

     let parameters = ["fields": "email"] 

     let graphRequest:FBSDKGraphRequest = FBSDKGraphRequest(graphPath: "me", parameters: parameters, HTTPMethod: "GET") 

     graphRequest.startWithCompletionHandler { (connection, result, error) -> Void in 

      if error != nil { 
       print("Error recieved: \(error.debugDescription)") 
       return 
      } 

      guard let email = result["email"] as? String else { 
       return 
      } 

      print("Email: \(email)") 
     } 
    } 

    func loginButtonWillLogin(loginButton: FBSDKLoginButton!) -> Bool { 
     return true 
    } 

    func loginButtonDidLogOut(loginButton: FBSDKLoginButton!) { 
     print("Logged out") 
    } 




    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) { 
     self.view.endEditing(true) 
    } 

} 

エラー受信：

Error recieved: Error Domain=com.facebook.sdk.core Code=8 "(null)" UserInfo={com.facebook.sdk:FBSDKGraphRequestErrorCategoryKey=0, com.facebook.sdk:FBSDKGraphRequestErrorHTTPStatusCodeKey=400, com.facebook.sdk:FBSDKErrorDeveloperMessageKey=An active access token must be used to query information about the current user., com.facebook.sdk:FBSDKGraphRequestErrorGraphErrorCode=2500, com.facebook.sdk:FBSDKGraphRequestErrorParsedJSONResponseKey={ 
    body =  { 
     error =   { 
      code = 2500; 
      "fbtrace_id" = CgykKyskOcd; 
      message = "An active access token must be used to query information about the current user."; 
      type = OAuthException; 
     }; 
    }; 
    code = 400; 
}} 

は、誰かが助けることができます。おかげ

ここでは、私の情報-のplistファイルです：

<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> 
<plist version="1.0"> 
<dict> 
    <key>CFBundleDevelopmentRegion</key> 
    <string>en</string> 
    <key>CFBundleExecutable</key> 
    <string>$(EXECUTABLE_NAME)</string> 
    <key>CFBundleIdentifier</key> 
    <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string> 
    <key>CFBundleInfoDictionaryVersion</key> 
    <string>6.0</string> 
    <key>CFBundleName</key> 
    <string>$(PRODUCT_NAME)</string> 
    <key>CFBundlePackageType</key> 
    <string>APPL</string> 
    <key>CFBundleShortVersionString</key> 
    <string>1.0</string> 
    <key>CFBundleURLTypes</key> 
    <array> 
     <dict> 
      <key>CFBundleURLSchemes</key> 
      <array> 
       <string>fb{{myFB-Id}}</string> 
      </array> 
     </dict> 
     <dict> 
      <key>CFBundleTypeRole</key> 
      <string>Editor</string> 
      <key>CFBundleURLSchemes</key> 
      <array> 
       <string>com.googleusercontent.apps.99471515633-84bp5qjrl8jqf0drm10aucsrrepgta12</string> 
      </array> 
     </dict> 
     <dict> 
      <key>CFBundleTypeRole</key> 
      <string>Editor</string> 
      <key>CFBundleURLSchemes</key> 
      <array> 
       <string>{{Bundler-id}}</string> 
      </array> 
     </dict> 
    </array> 
    <key>CFBundleVersion</key> 
    <string>1</string> 
    <key>LSApplicationCategoryType</key> 
    <string></string> 
    <key>FacebookAppID</key> 
    <string>{{myFB-id}}</string> 
    <key>FacebookDisplayName</key> 
    <string>{{myFB-displayName}}</string> 
    <key>LSApplicationQueriesSchemes</key> 
    <array> 
     <string>fbapi</string> 
     <string>fb-messenger-api</string> 
     <string>fbauth2</string> 
     <string>fbshareextension</string> 
    </array> 
    <key>LSRequiresIPhoneOS</key> 
    <true/> 
    <key>UILaunchStoryboardName</key> 
    <string>LaunchScreen</string> 
    <key>UIMainStoryboardFile</key> 
    <string>Main</string> 
    <key>UIRequiredDeviceCapabilities</key> 
    <array> 
     <string>armv7</string> 
    </array> 
    <key>UISupportedInterfaceOrientations</key> 
    <array> 
     <string>UIInterfaceOrientationPortrait</string> 
     <string>UIInterfaceOrientationLandscapeLeft</string> 
     <string>UIInterfaceOrientationLandscapeRight</string> 
    </array> 
    <key>UISupportedInterfaceOrientations~ipad</key> 
    <array> 
     <string>UIInterfaceOrientationPortrait</string> 
     <string>UIInterfaceOrientationPortraitUpsideDown</string> 
     <string>UIInterfaceOrientationLandscapeLeft</string> 
     <string>UIInterfaceOrientationLandscapeRight</string> 
    </array> 
</dict> 
</plist> 

Answer 1

更新あなた。あなたが追加しましたあなたのボタンクリック方法//

if FBSDKAccessToken.currentAccessToken() != nil { 
     FBSDKLoginManager().logOut() 
     return 
} 

let login:FBSDKLoginManager = FBSDKLoginManager() 

login.logInWithReadPermissions(["public_profile", "email", "user_friends" ], handler: { (result:FBSDKLoginManagerLoginResult!, error:NSError!) -> Void in 
     if(error != nil){ 
      FBSDKLoginManager().logOut() 
     }else if(result.isCancelled){ 
      FBSDKLoginManager().logOut() 
     }else{ 
      //Handle login success 
      self.returnUserData() 
     } 
    }) 




func loginButtonDidLogOut(loginButton: FBSDKLoginButton!) { 
     print("User Logged Out") 

} 

func returnUserData() 
{ 
    let graphRequest : FBSDKGraphRequest = FBSDKGraphRequest(graphPath: "me", parameters: ["fields": "id, name, first_name, last_name, email, friends, birthday, cover, devices, picture.type(large)"]) 

    graphRequest.startWithCompletionHandler({ (connection, result, error) -> Void in 
    if ((error) != nil) 
    { 
      // Process error 
      print("Error: \(error)") 
    } 
    else 
    { 
      print(result) 

    } 
    }) 
} 

にこのコードを入れのplistファイルhttps://gist.github.com/himanshu-benzatine/1ad78c7d17051c36f60b934b64725f31

//あなたのAppDelegate.swiftファイルに

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool { 
    return FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions) 
} 



func application(application: UIApplication, openURL url: NSURL, sourceApplication: String?, annotation: AnyObject) -> Bool { 
     return FBSDKApplicationDelegate.sharedInstance().application(application, openURL: url, sourceApplication: sourceApplication, annotation: annotation) 
}