1. Setup

Initialization

In your MauiProgram.cs call the following method on your app builder:

builder.UseAdMob()

Android setup

You need to update your app's manifest (Platforms/Android/AndroidManifest.xml) to include:

• the AdActivity activity
• the ACCESS_NETWORK_STATE and INTERNET permissions (if they are not present already)
• the APPLICATION_ID (make sure this is added inside the <application> element)

<?xml version="1.0" encoding="utf-8"?>
<manifest ...>
  <application ...>
    <activity android:name="com.google.android.gms.ads.AdActivity" android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" android:theme="@android:style/Theme.Translucent" />
    <meta-data
    	android:name="com.google.android.gms.ads.APPLICATION_ID"
    	android:value="ca-app-pub-3940256099942544~3347511713" />
  </application>
  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
  <uses-permission android:name="android.permission.INTERNET" />
</manifest>

For more details you can check the official docs: https://developers.google.com/admob/android/quick-start

iOS setup

1. Modify your Platforms/iOS/Info.plist by adding your GADApplicationIdentifier and SKAdNetworkItems as described here: https://developers.google.com/admob/ios/quick-start
2. Go to your Platforms/iOS/AppDelegate.cs and make a call to Google.MobileAds.MobileAds.SharedInstance.Start(completionHandler: null). Your AppDelegate should look similar to this:

[Register("AppDelegate")]
public class AppDelegate : MauiUIApplicationDelegate
{
    protected override MauiApp CreateMauiApp()
    {
        var app = MauiProgram.CreateMauiApp();

        Google.MobileAds.MobileAds.SharedInstance.Start(completionHandler: null);

        return app;
    }
}