Ios Firebase 3.x-Facebook登录

在

Firebase 2.5.1

中，我曾经这样做过，它正在工作：

@IBAction func facebookLoginDidTouch(sender: AnyObject) {

   let facebookLogin = FBSDKLoginManager() 

  facebookLogin.logInWithReadPermissions(["public_profile", "email"], fromViewController: self, handler: {
    (facebookResult, facebookError) -> Void in
        if facebookError != nil {
            print("Facebook login failed. Error \(facebookError)")
        } else if facebookResult.isCancelled {
            print("Facebook login was cancelled.")
        } else {
            let accessToken = FBSDKAccessToken.currentAccessToken().tokenString
            myRootRef.authWithOAuthProvider("facebook", token: accessToken, withCompletionBlock: { error, authData in

                    if error != nil {
                        print("Login failed. \(error)")
                    } else {
                        print("Logged in!")
                        let newUser = [
                            "provider": user.provider,  
                            "imageUrl": user!.providerData["profileImageURL"] as String,    // etc
                        ]
                    }
             })
         }
   })
}

现在我正试图在

Firebase 3.x

中实现这一点。然而，我对应该在哪里放置权限和内容感到困惑

这就是我到目前为止所尝试的

@IBAction func facebookLoginDidTouch(sender: AnyObject) {

   let facebookLogin = FBSDKLoginManager()

   let credential = FIRFacebookAuthProvider.credentialWithAccessToken(FBSDKAccessToken.currentAccessToken().tokenString)

   FIRAuth.auth()?.signInWithCredential(credential) { (user, error) in
    if error != nil {
        print("Login failed. \(error)")
    } else {
        print("Logged in!")

        let newUser = [
           "provider": user.provider,
           "imageUrl": user!.providerData["profileImageURL"] as String
        ]
    }
   })
}

更新：

 facebookLogin.logInWithReadPermissions(["public_profile", "email"], fromViewController: self, handler: {
    (facebookResult, facebookError) -> Void in
    if facebookError != nil {
        print("Facebook login failed. Error \(facebookError)")
    } else if facebookResult.isCancelled {
        print("Facebook login was cancelled.")
    } else {
        // your firebase authentication stuff..

        let credential = FIRFacebookAuthProvider.credentialWithAccessToken(FBSDKAccessToken.currentAccessToken().tokenString)

        FIRAuth.auth()?.signInWithCredential(credential) { (user, error) in
            if error != nil {
                print("Login failed. \(error)")
            } else {
                print("Logged in!")

                let userID = Helpers.extractUID(user!)

                let rootRef = FIRDatabase.database().reference()
                let userRef = rootRef.child("users").child(userID)

                userRef.observeEventType(.Value, withBlock: { snapshot in
                    if snapshot.value is NSNull {
                        let newUser = [
                            "providerId": user?.providerID,
                            "displayName": user?.displayName,
                        ]
                       userRef.setValue((newUser as! AnyObject))
                       // perform segue
                    }
                })
             }
         })

---

成功登录facebook并获取用户数据后。。。你必须添加firebase身份验证之类的东西

 @IBAction func facebookLoginDidTouch(sender: AnyObject) {

   let facebookLogin = FBSDKLoginManager() 

   facebookLogin.logInWithReadPermissions(["public_profile", "email"], fromViewController: self, handler: {
    (facebookResult, facebookError) -> Void in
        if facebookError != nil {
            print("Facebook login failed. Error \(facebookError)")
        } else if facebookResult.isCancelled {
            print("Facebook login was cancelled.")
        } else {
            // your firebase authentication stuff..

            let credential = FIRFacebookAuthProvider.credentialWithAccessToken(FBSDKAccessToken.currentAccessToken().tokenString)

            FIRAuth.auth()?.signInWithCredential(credential) { (user, error) in
            if error != nil {
                  print("Login failed. \(error)")
            } else {
                 print("Logged in!")

            }
          })
        }
   })
}

---

成功登录facebook并获取用户数据后。。。你必须添加firebase身份验证之类的东西

 @IBAction func facebookLoginDidTouch(sender: AnyObject) {

   let facebookLogin = FBSDKLoginManager() 

   facebookLogin.logInWithReadPermissions(["public_profile", "email"], fromViewController: self, handler: {
    (facebookResult, facebookError) -> Void in
        if facebookError != nil {
            print("Facebook login failed. Error \(facebookError)")
        } else if facebookResult.isCancelled {
            print("Facebook login was cancelled.")
        } else {
            // your firebase authentication stuff..

            let credential = FIRFacebookAuthProvider.credentialWithAccessToken(FBSDKAccessToken.currentAccessToken().tokenString)

            FIRAuth.auth()?.signInWithCredential(credential) { (user, error) in
            if error != nil {
                  print("Login failed. \(error)")
            } else {
                 print("Logged in!")

            }
          })
        }
   })
}

---

在其他部分…添加这些内容<代码>如果facebookError！=无{print（“Facebook登录失败。错误\（facebookError）”）}如果facebookResult.isCancelled{print（“Facebook登录被取消”）}否则{让凭证…}在其他部分…添加此内容<代码>如果facebookError！=无{print（“Facebook登录失败。错误\（facebookError）”）}如果facebookResult.isCancelled{print（“Facebook登录被取消”）}否则{让凭证…}在“你的firebase身份验证材料”中，我应该包括其他内容还是你的意思是

let-credential…

内容？在“你的firebase身份验证内容”中，我应该包括其他内容还是你的意思是

let-credential…

内容？