How to Add AdMob Banner Ads to Your iOS Swift App

Final product image
What You'll Be Creating

Banner ads are an important source of revenue for many app developers. In this tutorial you will learn how to add AdMob ads to your iOS app, using Swift 3 and Xcode 8.

Create a Banner Unit ID

The very first thing to do to prepare your iOS app to show banner ads is to create its Unit ID on the AdMob website. If you don't have a Google account, I suggest you sign up for a new one—it's free, and it gives you access to all Google services.

Once you've entered the AdMob home page, click on the red Monetize New App button.

AdMob website Home page

If your app is not on the iTunes App Store yet, you will have to select Add Your App Manually. Then type your application's name, select the iOS Platform, and click the Add App button.

Start monetizing your app

On the next screen, you will see your newly generated AdMob App ID below the Apple grey icon. Please note that it is not the same as the Unit ID that needs to be pasted into your Xcode project. We'll get to the Unit ID in a little bit.

Click Banner to select the ad format. I suggest you leave the Ad type, Automatic refresh, and Text ad style settings at their default values. If you do want to customize the Ad style, you can click on the Standard combo box and select Customized. For a custom banner, you can customize the background, border, title, text, and URL color.

Finally, type a name in the Ad unit name box. That will not be your banner identifier, but just a reference name for your Unit ID. Click Save to move on to the third step.

Create a Banner Unit ID

Step 3 is optional and lets you link your AdMob app to Firebase and to share your data from the free Firebase Analytics tool. For now, just click on Skip to go on.

Link AdMob to Firebase Analytics optional

Finally, you can download the latest GoogleMobileAds.framework file from the Firebase server. This fourth step will also show you the Ad unit ID you'll have to paste into the main .swift file of your Xcode project, as we'll see later.

Finish creating your banner ID

Click on the Download the Google Mobile Ads SDK link. A new tab will open up in your browser, and you'll be able to download the latest official package zip file. 

Download Google Mobile SDK package

Go back to the AdMob website and click Done. The next screen will show you the Ad unit ID you've just created, ready to be copied and pasted in your .swift file in Xcode. I'm assuming you've already created a new Xcode project or you have your own one into which you want to add AdMob ads.

Implement AdMob in Your Xcode project

Extract the file you've previously downloaded from the Firebase server, open its folder, and copy GoogleMobileAds.framework only.

Copy GoogleMobileAdsframework

Paste it into your project folder.

Paste GoogleMobileAdsframework into your project folder

Now enter your Xcode project and go to the General tab, scroll down to the Linked Frameworks and Library section, and drag the GoogleMobileAds.framework file over to it.

Drag GoogleMobileAdsframework into your Xcode window

You may have to add additional iOS Frameworks to your Xcode project in order for AdMob to receive and display banners in your app. 

Click on the + sign at the bottom and import the following frameworks one by one:

  • EventKit 
  • EventKitUI 
  • AVFoundation 
  • AdSupport 
  • AudioToolbox 
  • AVFoundation 
  • CoreGraphics 
  • CoreTelephony 
  • CoreMedia 
  • MessageUI 
  • StoreKit 
  • SystemConfiguration 
Import iOS frameworks in Xcode

The thing to do is to switch to the Build Settings tab and search for bitcode. Xcode will bring up the Enable Bitcode option, and you will have to set it to be No.

Enable Bitcode option set to No

You're now ready to write some code to make AdMob ads show up in your app!

The Code

Based on how your app is built, you'll want AdMob ads to show up in your view controllers. So you need to enter the .swift file of the controller you want ads to be displayed and import the following frameworks at the top of the file:

Adopt the GADBannerViewDelegate protocol by adding it to the end of your class declaration:

Add the AdMob banner view above the viewDidLoad() method in your class:

The following line of code is a simple string that recalls the Ad unit ID you've previously created:

Here you'll have to replace ca-app-pub-9733347540588953/6145924825 with your own banner unit ID, so go back to your AdMob Ad Units page in your browser to copy that string and paste it in the code above.

Now add the functions below inside your viewDidLoad() method:

Lastly, paste the following method declaration wherever you want in your .swift file (before the class closing bracket and not into an existing method):

Please note that AdMob banners have different sizes based on the device used, so the first lines of code in func initAdMobBanner() set the size of the banners for iPhone/iPod Touch and iPad.

If you're curious about the available banner sizes for AdMob ads, you can check out the AdMob documentation. Anyway, the best banner sizes for iPhone and iPad devices are the ones we've set in the code above:

  • 320 x 50 px for iPhones
  • 468 x 60 px for iPads

CodeCanyon Template

On CodeCanyon, I'm selling an iOS app template that comes with AdMob banners built in, and also has support for interstitial ads. So, if you want to speed up your development, you can just purchase that template and kick-start your app.

AdMob Banner  Interstitial ads iOS Universal app template

Find it here: iOS AdMob Banner + Interstital Ads Template | Universal (Swift).

There are hundreds of other iOS app templates on CodeCanyon. Go check them out! You might just save hours of work on your next app.


Thanks for reading, and I'll see you next time! Please check out some of our other courses and tutorials about iOS app development with Swift.



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