Snippet of code on How to add Facebook Ads Banner to ViewController

ViewController.m

//
//  ViewController.m
//
//  Created by Antonio081014 on 6/4/16.
//  Copyright © 2016 Antonio081014.com. All rights reserved.
//

#import "ViewController.h"
@import FBAudienceNetwork;

@interface ViewController () <FBAdViewDelegate>
@property(nonatomic, strong) FBAdView *adView;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    self.adView = [[FBAdView alloc] initWithPlacementID:@"XXX"
                                                      adSize:kFBAdSizeHeight50Banner
                                          rootViewController:self];
    
    [FBAdSettings addTestDevice:@"Hash ID for testing on real device purpose."];
    
    self.adView.delegate = self;
    
    NSLog(@"%@", NSStringFromCGRect(self.adView.frame));
    
    self.adView.frame = CGRectMake(0, CGRectGetMinY(self.view.bounds) + self.topLayoutGuide.length, CGRectGetWidth(self.view.bounds), 50);
    
    [self.view addSubview:self.adView];
    
    [self.adView loadAd];
}

- (void)viewDidLayoutSubviews {
    [super viewDidLayoutSubviews];
    
    self.adView.frame = CGRectMake(0, CGRectGetMinY(self.view.bounds) + self.topLayoutGuide.length, CGRectGetWidth(self.view.bounds), 50);
}

- (void)adView:(FBAdView *)adView didFailWithError:(NSError *)error;
{
    NSLog(@"Ad failed to load");
    // Add code to hide the ad unit...
    // E.g. adView.hidden = YES;
}

- (void)adViewDidLoad:(FBAdView *)adView;
{
    NSLog(@"Ad was loaded and ready to be displayed");
    // Add code to show the ad unit...
    // E.g. adView.hidden = NO;
}

- (void)adViewDidClick:(FBAdView *)adView
{
    NSLog(@"The user clicked on the ad and will be taken to its destination.");
}

- (void)adViewDidFinishHandlingClick:(FBAdView *)adView
{
    NSLog(@"The user finished to interact with the ad.");
}

- (UIViewController *)viewControllerForPresentingModalView
{
    // return the view controller that is currently presenting the ad unit.
    return self;
}

@end

ViewController.swift

//
//  ViewController.swift
//
//  Created by Antonio081014 on 6/4/16.
//  Copyright © 2016 Antonio081014.com. All rights reserved.
//

import UIKit
import FBAudienceNetwork

class ViewController: UIViewController, FBAdViewDelegate {

    var adView:FBAdView = FBAdView.init()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        adView = FBAdView.init(placementID: "XXX", adSize: kFBAdSizeHeight50Banner, rootViewController: self)
        adView.delegate = self
        
        FBAdSettings.addTestDevice("Hash ID for testing on real device purpose.")
        self.view.addSubview(adView)
        
        adView.loadAd()
    }

    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        
        adView.frame = CGRectMake(CGRectGetMinX(self.view.bounds), CGRectGetMinY(self.view.bounds) + self.topLayoutGuide.length, CGRectGetWidth(self.view.bounds), 50)
    }
    
    func adViewDidLoad(adView: FBAdView) {
        print("Ad was loaded and ready to be displayed")
    }
    
    func adView(adView: FBAdView, didFailWithError error: NSError) {
        print("Ad failed to load")
    }
    
    func adViewDidClick(adView: FBAdView) {
        print("The user clicked on the ad and will be taken to its destination.")
    }
    
    func adViewDidFinishHandlingClick(adView: FBAdView) {
        print("The user finished to interact with the ad.")
    }
    
    func viewControllerForPresentingModalView() -> UIViewController {
        return self
    }

}