Cognito Delegate Implementation in AppDelegate.swift

AppDelegate.swift

extension AppDelegate: AWSCognitoIdentityInteractiveAuthenticationDelegate {
    
    func startPasswordAuthentication() -> AWSCognitoIdentityPasswordAuthentication {
        if(self.navigationController == nil) {
            self.navigationController = self.window?.rootViewController as? UINavigationController
        }
        
        if(self.loginViewController == nil) {
            self.loginViewController = self.storyboard?.instantiateViewController(withIdentifier: "LoginViewController") as? LoginViewController
        }
        
        DispatchQueue.main.async {
            if(self.loginViewController!.isViewLoaded || self.loginViewController!.view.window == nil) {
                self.navigationController?.present(self.loginViewController!, animated: true, completion: nil)
            }
        }
        
        return self.loginViewController!
    }
    
    func startNewPasswordRequired() -> AWSCognitoIdentityNewPasswordRequired {
        if (self.resetPasswordViewController == nil) {
            self.resetPasswordViewController = self.storyboard?.instantiateViewController(withIdentifier: "ResetPasswordController") as? ResetPasswordViewController
        }
        
        DispatchQueue.main.async {
            if(self.resetPasswordViewController!.isViewLoaded || self.resetPasswordViewController!.view.window == nil) {
                self.navigationController?.present(self.resetPasswordViewController!, animated: true, completion: nil)
            }
        }
        
        return self.resetPasswordViewController!
    }
    
}