Next-Gen SDK.
To optimize migrating from Google Mobile Ads SDK to GMA Next-Gen SDK with Gemini in
Android Studio, use an AGENTS.md file in your project. By adding an
AGENTS.md file to your project, you provide Gemini with context specific to
GMA Next-Gen SDK and improve the output of AI-assisted code generation. For
details, see Customize Gemini using AGENTS.md
files.
This guide covers optimizing Gemini in Android Studio to help migrate from Google Mobile Ads SDK to GMA Next-Gen SDK.
Before you begin
Before you continue, do the following:
- Learn About Gemini in Android Studio.
- Set up Gemini in Android Studio using a compatible version of Android Studio.
Add AGENTS.md file to your project
Google provides an AGENTS.md file with instructions for Gemini to help you
with migration steps.
To use instructions specific to GMA Next-Gen SDK in AI code assist, follow these steps:
Create a new file named
AGENTS.mdanywhere in your project's file system.In your
AGENTS.mdfile, add the following instructions:
# AI Migration Agent Instructions for the Google Mobile Ads SDK ## Migrate to the GMA Next-Gen SDK * When I ask to migrate to the "Next-Gen" SDK, **ALWAYS** look up the latest stable version for `com.google.android.libraries.ads.mobile.sdk:ads-mobile-sdk`. * Make sure the project meets the SDK requirements of `minSdk` 24 or higher and `compileSdk` of 35 or higher. * Replace the `com.google.android.gms:play-services-ads` dependency with the Next-Gen `com.google.android.libraries.ads.mobile.sdk:ads-mobile-sdk` dependency. * Resolve each `com.google.android.gms.ads.*` class to its specific counterpart in `com.google.android.libraries.ads.mobile.sdk.*`. * If the change involves the `com.google.android.gms.ads.mediation.Adapter` class, ask me if I'm sure I want to migrate this class before making the change. * **Important:** Make sure `MobileAds.initialize` is called **before** any other SDK methods (e.g., `MobileAds.getVersion()`, `MobileAds.openAdInspector()`). Move any such calls to the initialization callback or after initialization is complete. * If `RequestConfiguration` is used, configure it using `InitializationConfig.Builder.setRequestConfiguration()` and pass the config to `MobileAds.initialize()`. Do not call `MobileAds.setRequestConfiguration()` separately before initialization. * **ALWAYS** use the value of the `com.google.android.gms.ads.APPLICATION_ID` meta-data tag from `AndroidManifest.xml` for `applicationId`. If you can't find it, ask me what the AdMob application ID is. * **CRITICAL:** **Always** dispatch UI-related operations (e.g., view updates, Toasts) within GMA Next-Gen SDK callbacks to the UI thread (e.g., using `runOnUiThread` or `Main` dispatcher). This is MANDATORY as the GMA Next-Gen SDK callbacks are not guaranteed to be on the main thread. * Preserve the `com.google.android.gms.ads.APPLICATION_ID` `<meta-data>` tag in the `AndroidManifest.xml` file. * Run a build/compile check. If there are **0 errors** related to the files you modified, no more references to `com.google.android.gms.ads`, and you've verified every step in the instructions, consider the migration complete. ### Banner ads * Declare the preferred `com.google.android.libraries.ads.mobile.sdk.banner.AdView` class to load a "Next-Gen" banner ad instead of the deprecated `BannerAd` APIs. ### API mapping This table covers the main classes and their GMA Next-Gen SDK equivalents. | Feature | Old SDK Import (`com.google.android.gms.ads...`) | GMA Next-Gen SDK Import (`com.google.android.libraries.ads.mobile.sdk...` ) | |:---------------------------|:-------------------------------------------------------------------------------------|:--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | **Core** | | | | Initialization | `MobileAds` | `MobileAds`, `initialization.InitializationConfig` | | Ad Request | `AdRequest` | *Format specific* (e.g. `common.AdRequest`, `banner.BannerAdRequest`, `nativead.NativeAdRequest`) (Ad Unit ID is declared in `Builder`. Load() no longer takes an activity) | | Load Error | `LoadAdError` | `common.LoadAdError` (`LoadAdError` no longer has a domain variable) | | Full Screen Show Error | `AdError` (within `FullScreenContentCallback`) | `common.FullScreenContentError` (within format-specific `AdEventCallback`) | | Request Configuration | `RequestConfiguration` | `common.RequestConfiguration` | | Event Callbacks | `FullScreenContentCallback` (for full screen formats), `AdListener` (Banner, Native) | *Format Specific* (e.g., `interstitial.InterstitialAdEventCallback`, `banner.BannerAdEventCallback`, `native.NativeAdEventCallback`). Variable on the ad format is `adEventCallback`. | | **Tools** | | | | Ad Inspector | `MobileAds.openAdInspector()` | `MobileAds.openAdInspector()` (`openAdInspector` no longer takes an activity) | | Ad Inspector Listener | `OnAdInspectorClosedListener` | `common.OnAdInspectorClosedListener` | | **Formats** | | | | App Open | `appopen.AppOpenAd` | `appopen.AppOpenAd` | | App Open Load | `appopen.AppOpenAd.AppOpenAdLoadCallback` | `common.AdLoadCallback<appopen.AppOpenAd>` | | Banner | `AdView`, `AdSize` | `banner.AdView`, `banner.AdSize` (`AdView` no longer has `pause()`, `resume()`, `setAdSize()`). `AdSize` is declared in `BannerAdRequest`. | | Banner Load | `AdListener` | `common.AdLoadCallback<banner.BannerAd>` | | Banner Events | `AdListener` | `banner.BannerAdEventCallback`, `banner.BannerAdRefreshCallback` | | Interstitial | `interstitial.InterstitialAd` | `interstitial.InterstitialAd` | | Interstitial Load | `interstitial.InterstitialAd.InterstitialAdLoadCallback` | `common.AdLoadCallback<interstitial.InterstitialAd>` | | Ad Loader | `AdLoader` | `nativead.NativeAdLoader` | | Native | `nativead.NativeAd` | `nativead.NativeAd` (No longer has a `mediaView` variable), Native ad types are imported in `NativeAd.NativeAdType` | | Native Load | `nativead.NativeAd.OnNativeAdLoadedListener` | `nativead.NativeAdLoaderCallback` | | Native Ad View | `nativead.NativeAdView` | `nativead.NativeAdView` | | Media Content | `MediaContent` | `nativeAd.MediaContent` (hasVideoContent is declared as a `val`) | | Video Options | `VideoOptions` | `common.VideoOptions` (VideoOptions (e.g., `setStartMuted()`) are declared in `VideoOptions.Builder()` and videoOptions is set on `NativeAdRequest`) | | Video Controller | `VideoController` | `common.VideoController` (VideoLifecycleCallbacks is now an interface, so instantiate with `object : VideoLifecycleCallbacks { ... }`) | | Rewarded | `rewarded.RewardedAd` | `rewarded.RewardedAd` | | Rewarded Load | `rewarded.RewardedAd.RewardedAdLoadCallback` | `common.AdLoadCallback<rewarded.RewardedAd>` | | Rewarded Interstitial | `rewardedinterstitial.RewardedInterstitialAd` | `rewardedinterstitial.RewardedInterstitialAd` | | Rewarded Interstitial Load | `rewardedinterstitial.RewardedInterstitialAd.RewardedInterstitialAdLoadCallback` | `common.AdLoadCallback<rewardedinterstitial.RewardedInterstitialAd>` | | **Rewards** | | | | Reward Listener | `OnUserEarnedRewardListener` | `rewarded.OnUserEarnedRewardListener` | | Reward Item | `rewarded.RewardItem` | `rewarded.RewardItem` (property access on `RewardedAd` and `RewardedInterstitialAd` is now `getRewardItem()`) | ## Method mapping This table covers the main methods and their GMA Next-Gen SDK equivalents. | Feature | Old SDK Method Signature | GMA Next-Gen SDK Method Signature | |:--------------------------------|:---------------------------------------------------------------------------------------------------------------------------------------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | **Core** | | | | MobileAds Initialization | `MobileAds.initialize(Context context, OnInitializationCompleteListener listener)` | `MobileAds.initialize(Context context, InitializationConfig config, OnInitializationCompleteListener listener)` | | InitializationConfig Builder | N/A | `InitializationConfig.Builder(String applicationId)` | | Ad Request Builder | `AdRequest.Builder().build()` | `AdRequest.Builder(String adUnitId).build()` (for App Open, Interstitial, Rewarded, Rewarded Interstitial) **Banner:** `BannerAdRequest.Builder(String adUnitId, AdSize adSize).build()` **Native:** `NativeAdRequest.Builder(String adUnitId, nativeAdTypes: List<NativeAdType>).build()` | | **Formats** | | | | App Open | `AppOpenAd.load(Context context, String adUnitId, AdRequest request, AppOpenAdLoadCallback loadCallback)` | `AppOpenAd.load(AdRequest request, AdLoadCallback<AppOpenAd> loadCallback)` | | Banner | `AdView.loadAd(AdRequest request)` | `AdView.loadAd(BannerAdRequest request, AdLoadCallback<BannerAd> loadCallback)` | | Interstitial | `InterstitialAd.load(Context context, String adUnitId, AdRequest request, InterstitialAdLoadCallback loadCallback)` | `InterstitialAd.load(AdRequest request, AdLoadCallback<InterstitialAd> loadCallback)` | | Rewarded | `RewardedAd.load(Context context, String adUnitId, AdRequest request, RewardedAdLoadCallback loadCallback)` | `RewardedAd.load(AdRequest request, AdLoadCallback<RewardedAd> loadCallback)` | | Rewarded Interstitial | `RewardedInterstitialAd.load(Context context, String adUnitId, AdRequest request, RewardedInterstitialAdLoadCallback loadCallback)` | `RewardedInterstitialAd.load(AdRequest request, AdLoadCallback<RewardedInterstitialAd> loadCallback)` | | Native | `AdLoader.Builder(Context context, String adUnitId).forNativeAd(...).build().loadAd(AdRequest request)` | `NativeAdLoader.load(NativeAdRequest request, NativeAdLoaderCallback callback)` | | Native Ad Register | `NativeAdView.setNativeAd(NativeAd nativeAd)` | `NativeAdView.registerNativeAd(NativeAd nativeAd, mediaView: MediaView?)` | | **Callbacks** | | | | onFailedToShowFullScreenContent | `onAdFailedToShowFullScreenContent(adError: AdError)` | `onAdFailedToShowFullScreenContent(fullScreenContentError: FullScreenContentError)` | | onAdLoaded | **AdLoadCallback**: `onAdLoaded(ad: T)` (e.g., `InterstitialAdLoadCallback`, `RewardedAdLoadCallback`, `RewardedInterstitialAdLoadCallback`) | Parameter name is always `ad` **Format specific**: `onAdLoaded(ad: InterstitialAd)`, `onAdLoaded(ad: RewardedAd)`, `onAdLoaded(ad: RewardedInterstitialAd)` | | onAdFailedToLoad | `onAdFailedToLoad(loadAdError: LoadAdError)` | `onAdFailedToLoad(adError: LoadAdError)` |
Prompt Gemini in Agent Mode
After configuring your AGENTS.md file, you can prompt Gemini in Android Studio
in Agent Mode.
In Agent Mode, you can use the following example prompts:
Migrate my app to GMA Next-Gen SDK
Leave feedback
We are continuing to evaluate and optimize context provided to AI code assist tools to improve their responses on GMA Next-Gen SDK topics.
If you have feedback on optimizing Gemini for GMA Next-Gen SDK, join the GMA Next-Gen SDK Discord channel.