Set up direct access for Ad Exchange

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The Google Mobile Ads SDK supports monetizing your apps with an Ad Exchange property. This guide shows you how to configure your apps for all ad formats supported by Ad Exchange.

Prerequisites

Configure your app for accessing Ad Exchange

Update your app's Info.plist file to set the GADApplicationIdentifier key with a string value of your Ad Manager app ID (identified in the Ad Manager UI).

Note also that failure to set the GADApplicationIdentifier key in the info.plist file as shown above results in a crash with the message:

Terminating app due to uncaught exception 'GADInvalidInitializationException',
reason: 'The Google Mobile Ads SDK was initialized without an application ID.
Google AdMob publishers, follow instructions at
https://googlemobileadssdk.page.link/admob-ios-update-plist to set a valid
application ID. Google Ad Manager publishers, follow instructions at
https://googlemobileadssdk.page.link/ad-manager-ios-update-plist.'

Next, you can select an ad format to display. The rest of this guide implements the banner format to illustrate how you can load an ad from Ad Exchange. The same steps can apply to any ad formats supported by the Google Mobile Ads SDK.

Load an ad from Ad Exchange

You can use an Ad Exchange web property code with a trailing forward slash, in your app in place of an ad unit ID.

In order to load and display banner ads, GAMBannerView requires an adUnitID. You can set this property to an Ad Exchange web property ID as follow:

override func viewDidLoad() {
  super.viewDidLoad()
  ...

  bannerView.adUnitID = "ca-mb-app-pub-5629679302779023/"
  bannerView.rootViewController = self
}

Note that failure to add a trailing forward slash to the Ad Exchange web property code as shown above results in an ad request error with the message:

Invalid Request. Cannot determine request type. Is your ad unit id correct?

Note also that you can convert an Ad Exchange web property code into an ad unit. After that you can use the Ad Manager UI to generate an Ad Exchange Tag and copy it into your app. The generated tag should have the Ad Exchange web property code, followed by descendant ad unit IDs without a trailing forward slash, for example: ca-mb-app-pub-5629679302779023/banner

Once the GAMBannerView is in place and its properties configured, you can load an ad and customize the behavior of your ad using ad events.

That's it! Your app is now ready to load and display banner ads from Ad Exchange.

In addition, you can use an Ad Exchange web property to load and display other ad formats from Ad Exchange by following respective guides: