Integrate Facebook login for iOS using swift

So let’s start with the coding part! With a explanation of integrate Facebook login for iOS.

Integrate Facebook login for iOS

Here you can find very simple way to integrate Facebook login for iOS on your Xcode project. So that, with the help of this you can integrate Facebook login for iOS using swift language easily. When people do Facebook login into your app, they can grant permissions to your app so you can retrieve information from their Facebook account and you can authorised them for using the application or perform actions as you want.

On different – 2 website you get different different answer of the question, How to do Facebook login for iOS using swift language. Therefore, you will get it in very easy and simple process.

• Create new Xcode Project
• Create Pod file in your project! via
• Get your project root location into terminal with the help of terminal command cd.
• like MacBook-Pro:~ pushpendra$ cd /Users/pushpendra/Desktop/FB-Login
• Create new Application on Facebook developer account. and follow the procedure to register the application. You can also follow the below link.

Open your terminal and run below command at your project location.

$ pod init
$ pod install

Close your FB-Login.xcodeproj and open FB-Login.xcworkspace. After that open your Podfile and write the below code!

# Uncomment the next line to define a global platform for your project
# platform :ios, '9.0'

target 'FB-Login' do
  # Comment the next line if you don't want to use dynamic frameworks
  use_frameworks!

  # Pods for FB-Login
  pod 'FacebookLogin'
  pod 'FacebookSDK'

  target 'FB-LoginTests' do
    inherit! :search_paths
    # Pods for testing
  end
  target 'FB-LoginUITests' do
    # Pods for testing
  end

end

Now open your AppDelegate.swift and write the below code!

import UIKit
import FacebookCore

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        ApplicationDelegate.shared.application(application, didFinishLaunchingWithOptions: launchOptions)
        return true
    }
    // MARK: UISceneSession Lifecycle
    func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
        // Called when a new scene session is being created.
        // Use this method to select a configuration to create the new scene with.
        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
    }

    func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
        // Called when the user discards a scene session.
        // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
        // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
    }
}

After that, finally code for your ViewController.swift. Or it may be any file where ever you want to create your login! In addition, this file just contains the necessary code.

import UIKit
import FacebookLogin
import FacebookCore
import FBSDKLoginKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        let loginButton = FBLoginButton(permissions: [ .publicProfile, .email ])
        loginButton.center = view.center
        view.addSubview(loginButton)
        
        loginButton.addTarget(self, action: #selector(facebookManager), for: .touchUpInside)
        
        if let accessTocken = AccessToken.current {
            print("ACCESS_TOKEN - " + accessTocken.tokenString)
            fetchUserProfile()
        }
    }
    
    func fetchUserProfile()
    {
        let graphRequest : GraphRequest = GraphRequest(graphPath: "me", parameters: ["fields":"id, email, name, picture.width(480).height(480)"])
        
        graphRequest.start(completionHandler: { (connection, result, error) -> Void in
            
            if ((error) != nil)
            {
                print("Error took place: \(String(describing: error))")
            }
            else
            {
                print("Print entire fetched result: \(String(describing: result))")
                let alertController = UIAlertController(
                    title: "Login Success",
                    message: "Login succeeded with granted permissions: \(String(describing: result!))",
                    preferredStyle: UIAlertController.Style.alert
                )
                self.present(alertController, animated: true, completion: nil)
            }
        })
    }
    
    
    @objc func facebookManager() {
        let loginManager = LoginManager()
        loginManager.logIn(
            permissions: [.publicProfile, .userFriends, .email],
            viewController: self
        ) { result in
            self.loginManagerDidComplete(result)
        }
    }
    
    func loginManagerDidComplete(_ result: LoginResult) {
           let alertController: UIAlertController
           switch result {
           case .cancelled:
               alertController = UIAlertController(
                   title: "Login Cancelled",
                   message: "User cancelled login.",
                   preferredStyle: UIAlertController.Style.alert
               )

           case .failed(let error):
               alertController = UIAlertController(
                   title: "Login Fail",
                   message: "Login failed with error \(error)",
                   preferredStyle: UIAlertController.Style.alert
               )

           case .success(let grantedPermissions, _, _):
               alertController = UIAlertController(
                   title: "Login Success",
                   message: "Login succeeded with granted permissions: \(grantedPermissions)",
                   preferredStyle: UIAlertController.Style.alert
               )
            
               
           }
           self.present(alertController, animated: true, completion: nil)
       }
}

In Conclusion, I hope no this question is clear how to do Facebook login for iOS with swift? And I am sure that, this will help you for your problem. Here you can find more tutorial which may help you for this problem.

• How To Add Google Analytics To IOS App
• Why Facebook Use Blue Color?
• What’s The Thing To Know About IOS