Google SignIn Delegate Navigation to second viewController SWIFT 4

I have some problem in login google, i want to google login auto to next layout, no back to firstViewController but next viewController ( secondViewcontroller )

Google button --> Sign In --> First Controller 

Google button --> Sign In --> Second View Controller

and finally i solve problem like this code below.

1.  func sign 

import UIKit
import GoogleSignIn


class LoginViewController: UIViewController, GIDSignInUIDelegate, GIDSignInDelegate{ 
func sign(_ signIn: GIDSignIn!, didSignInFor user: GIDGoogleUser!, withError error: Error!) {
        
        if GIDSignIn.sharedInstance().hasAuthInKeychain() {
            // Signed in
            
            let vc = secondViewController()
            self.navigationController?.setViewControllers([vc], animated: true)

            
        } else {
            self.dismiss(animated: true, completion: nil)
            
        }
.....







2. in ViewDidLoad




       override func viewDidLoad() {
        super.viewDidLoad()
        
        GIDSignIn.sharedInstance().uiDelegate = self
        GIDSignIn.sharedInstance().delegate = self
        GIDSignIn.sharedInstance().signInSilently()
        

        TextFiled()
        //if the user is already logged in
        if (FBSDKAccessToken.current()) != nil{
            getFBUserData()
        }

    }




Full LoginViewController.swift




import UIKit
import GoogleSignIn



class LoginViewController: UIViewController, GIDSignInUIDelegate, GIDSignInDelegate{
    
    func sign(_ signIn: GIDSignIn!, didSignInFor user: GIDGoogleUser!, withError error: Error!) {
        
        if GIDSignIn.sharedInstance().hasAuthInKeychain() {
            // Signed in
            
           let vc = secondViewController()
            self.navigationController?.setViewControllers([vc], animated: true)

            
        } else {
            self.dismiss(animated: true, completion: nil)
            
        }
        
       
    }
    
    
    var user = GIDSignIn()
  

    @IBAction func gButton(_ sender: Any) {

        GIDSignIn.sharedInstance().signIn()
        
        
    }
    
    
    
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        GIDSignIn.sharedInstance().uiDelegate = self
        GIDSignIn.sharedInstance().delegate = self
        GIDSignIn.sharedInstance().signInSilently()
        

    }
    


}










This my note as my problem and solution @luffyselah