2016-10-01 9 views
0

我想使用Facebook進行Cognito登錄流程,並且我遵循了很多AWS文檔,並查看了Stackoverflow中的教程和問題,但是我沒有找到解決方案我的問題。Swift - AWS Cognito-Facebook登錄

當用戶打開應用程序時,它將檢查用戶是否使用IdentityManager登錄。如果沒有,它將打開一個新的視圖,用戶可以在Facebook上使用Facebook SDK登錄。之後,如文檔所述,我使用自定義IdentityProvider存儲了令牌(不贊成使用credentialsProvider.logins)。似乎一切正常,但每次我重新打開應用程序,我的會話不會恢復。

我發現如果我使用AWSIdentityManager.defaultIdentityManager().resumeSessionWithCompletionHandler(handler)我恢復了我的會話,但萬一用戶沒有登錄,它不會按預期顯示我的自定義登錄屏幕,而是顯示到Facebook的Safari網頁瀏覽。

這裏是我的代碼:

AppDelegate.swift

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

    let identityManager = AWSIdentityManager.defaultIdentityManager() 

    identityManager.resumeSessionWithCompletionHandler({ 
     (result, error) -> Void in 

     if !identityManager.loggedIn { 
      let mainStoryboard : UIStoryboard = UIStoryboard(name: "Main", bundle: nil) 
      let initialViewControlleripad : UIViewController = mainStoryboard.instantiateViewControllerWithIdentifier("SignIn") as UIViewController 
      self.window = UIWindow(frame: UIScreen.mainScreen().bounds) 
      self.window?.rootViewController = initialViewControlleripad 
      self.window?.makeKeyAndVisible() 
     } 
    }) 

    return AWSMobileClient.sharedInstance.didFinishLaunching(application, withOptions: launchOptions) 
} 

SignInViewController.swift

@IBAction func openFacebookLoginScreen(sender: AnyObject) { 
    FBSDKLoginManager().logInWithReadPermissions(FACEBOOK_PERMISSIONS, fromViewController: self, handler: { (result, error) -> Void in 

     if error == nil { 
      let fbLoginResult : FBSDKLoginManagerLoginResult = result 

      if fbLoginResult.isCancelled { 
       print("Cancelled") 
      } 
      else { 
       if FBSDKAccessToken.currentAccessToken() != nil { 
        self.signInFacebook(FBSDKAccessToken.currentAccessToken().tokenString) 
        self.dismissSignInView() 
       } 
      } 
     } 
    }) 
} 

func signInFacebook(fbToken: String){ 

    let logins = [AWSIdentityProviderFacebook : fbToken] 

    let customProviderManager = CustomIdentityProvider(tokens: logins) 

    let credentialsProvider = AWSCognitoCredentialsProvider(
     regionType:.USEast1, 
     identityPoolId: COGNITO_IDENTITY_POOL_ID, 
     identityProviderManager: customProviderManager) 

    let configuration = AWSServiceConfiguration(region:.USEast1, credentialsProvider: credentialsProvider) 
    AWSServiceManager.defaultServiceManager().defaultServiceConfiguration = configuration 
} 

class CustomIdentityProvider: NSObject, AWSIdentityProviderManager { 
    var tokens : [NSString : NSString]? 

    init(tokens: [NSString : NSString]) { 
     self.tokens = tokens 
    } 

    @objc func logins() -> AWSTask { 
     return AWSTask(result: tokens) 
    } 
} 

回答

1

顯然,我的問題是,我是裏面的AppDelegate調用IdentityManager.loggedIn .swift,所以我把它移到我的主視圖c中的viewDidLoad() ontroller。

此外,我改變了我的登錄代碼:

@IBAction func openFacebookLoginScreen(_: AnyObject) { 
    handleLoginWithSignInProvider(AWSFacebookSignInProvider.sharedInstance()) 
} 

func handleLoginWithSignInProvider(signProvider: AWSSignInProvider){ 
    AWSIdentityManager.defaultIdentityManager().loginWithSignInProvider(signProvider) { (result, error) in 
     if(error == nil){ 
      let logins = [AWSIdentityProviderFacebook : FBSDKAccessToken.currentAccessToken().tokenString!] 

      let customProviderManager = CustomIdentityProvider(tokens: logins) 

      let credentialsProvider = AWSCognitoCredentialsProvider(
       regionType:.USEast1, 
       identityPoolId: self.COGNITO_IDENTITY_POOL_ID, 
       identityProviderManager: customProviderManager) 

      let configuration = AWSServiceConfiguration(region:.USEast1, credentialsProvider: credentialsProvider) 
      AWSServiceManager.defaultServiceManager().defaultServiceConfiguration = configuration 

      self.dismissSignInView() 
     } 
    } 
}