To optimize migrating from Google Mobile Ads SDK to GMA Next-Gen SDK with your AI tool, add a skill to your AI environment. By adding a skill, you provide your AI tool with context specific to GMA Next-Gen SDK and improve the output of AI-assisted code generation.
This guide covers optimizing your AI model to help migrate from Google Mobile Ads SDK to GMA Next-Gen SDK.
Prerequisites
If you use Android Studio, do the following:
- Learn About Gemini in Android Studio.
- Set up Gemini in Android Studio using Android Studio Panda 3 Canary 2 or later.
Add a skill
Google provides a SKILL.md file with instructions for your AI tool to help you
with migration steps.
To use a skill specific to GMA Next-Gen SDK with your AI tool, follow these steps:
Android Studio
In your project's root directory, create a folder named
.skills/.Create a directory for your skill named
gma-migrate.In the
gma-migratedirectory, create a file namedSKILL.md.In your
SKILL.mdfile, add the following instructions:--- name: gma-migrate description: Migrates applications from the old Google Mobile Ads (GMA) SDK (com.google.android.gms:play-services-ads) to the new GMA Next-Gen SDK (com.google.android.libraries.ads.mobile.sdk:ads-mobile-sdk). Use when migrating an existing codebase from the old SDK to the new Next-Gen SDK. Includes comprehensive mapping tables for imports, classes, and method signatures to help determine migration steps. metadata: version: 1.0 --- # AI Migration Agent Instructions for the Google Mobile Ads SDK ## Migration Workflow Use this checklist to track your migration progress: * **Configure Gradle**: - [ ] Replace `com.google.android.gms:play-services-ads` with the latest stable version of `com.google.android.libraries.ads.mobile.sdk:ads-mobile-sdk`. - [ ] Update `minSdk` (24+) and `compileSdk` (35+). - [ ] Exclude `play-services-ads` and `play-services-ads-lite` from all dependencies globally in the app-level build file to avoid duplicate symbol errors. - [ ] Sync Gradle before moving on to the next step. * **Per-File Migration**: - [ ] Refactor the codebase following the API Mapping and Method Mapping tables to migrate imports, class names, and method signature to GMA Next-Gen SDK. * **Verify and Build**: - [ ] Confirm a successful clean build. ## Core Migration Rules * **SDK Versions**: **ALWAYS** look up and use the latest stable version for `com.google.android.libraries.ads.mobile.sdk:ads-mobile-sdk`. Do not assume a version number. * **App ID Usage**: **Always** use the value of the `com.google.android.gms.ads.APPLICATION_ID` meta-data tag from `AndroidManifest.xml` for the `applicationId` in `InitializationConfig`. * *Constraint*: Preserve the `<meta-data>` tag in the manifest; it is still required for publishers using the User Messaging Platform SDK. * **Initialization Sequence**: 1. Call `MobileAds.initialize()` on a background thread. 2. Ensure `initialize()` is called **before** any other SDK methods. 3. If using `RequestConfiguration`, bundle it into `InitializationConfig.Builder.setRequestConfiguration()`. **Do not** call `MobileAds.setRequestConfiguration()` before initialization. * **UI Threading**: **MANDATORY**: Callbacks in GMA-Next Gen SDK are invoked on a background thread. Wrap UI-related operations (Toasts, View updates) in `runOnUiThread {}` or `Dispatchers.Main.launch {}` within SDK callbacks. * **Mediation**: Classes implementing `com.google.android.gms.ads.mediation.Adapter` MUST continue using `com.google.android.gms.ads`. ## Format Specifics ### Banner Ads * Use `com.google.android.libraries.ads.mobile.sdk.banner.AdView` for loading GMA Next-Gen SDK banners. * The following API checks if a banner is collapsible: `adView.getBannerAd().isCollapsible()`. ### Native Ads * The following APIs are now set on the `NativeAdRequest.Builder`: * `.setCustomFormatIds(customFormatIds: List<String>)` * `.disableImageDownloading()` * `.setMediaAspectRatio(mediaAspectRatio: NativeMediaAspectRatio)` * `.setAdChoicesPlacement(adChoicesPlacement: AdChoicesPlacement)` * `.setVideoOptions(videoOptions: VideoOptions)` * **Removal**: Delete all "Mute This Ad" logic; it is unsupported in GMA Next-Gen SDK. * **MediaView**: `NativeAd` no longer has a direct `mediaView` variable; use `registerNativeAd(nativeAd, mediaView)` to associate the ad with the view. ### Ad preloading * Unless specified in the mapping table, ad preloading methods in the GMA Next-Gen SDK retain the same API signatures and parameters as the Old SDK. ## 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. REMOVE the domain variable if found.) | | Full Screen Show Error | `AdError` (within `FullScreenContentCallback`) | `common.FullScreenContentError` (within format-specific `AdEventCallback`) | | Request Configuration | `RequestConfiguration` | `common.RequestConfiguration` (Nested Enums/Constants for RequestConfiguration are now under 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 Custom Format Ad | `nativead.NativeCustomFormatAd` | `nativead.CustomNativeAd` | | Native Custom Click | `nativead.NativeCustomFormatAd.OnCustomClickListener` | `nativead.OnCustomClickListener` (set on the `CustomNativeAd` object (e.g., `.onCustomClickListener`) | | 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`) | | Media Aspect Ratio | `MediaAspectRatio` | `nativead.MediaAspectRatio` | | Video Options | `VideoOptions` | `common.VideoOptions` | | Video Controller | `VideoController` | `common.VideoController` (VideoLifecycleCallbacks is now an interface, so instantiate with `object : VideoController.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>` | | Paid Event Listener | `OnPaidEventListener` | `common.AdEventCallback` | | Response Info | `ResponseInfo` | `common.ResponseInfo` (property access is now `getResponseInfo()`. `loadedAdapterResponseInfo` is now `loadedAdSourceResponseInfo`.) | | **Rewards** | | | | Reward Listener | `OnUserEarnedRewardListener` | `rewarded.OnUserEarnedRewardListener` | | Reward Item | `rewarded.RewardItem` | `rewarded.RewardItem` (property access on `RewardedAd` and `RewardedInterstitialAd` is now `getRewardItem()`) | | Ad Value | `AdValue` | `common.AdValue` | | **Preloading** | | | | Configuration | `preload.PreloadConfiguration` | `common.PreloadConfiguration` | | Callback | `preload.PreloadCallbackV2` | `common.PreloadCallback` (Now an interface instead of an abstract class) | | Interstitial Preloader | `interstitial.InterstitialPreloader` | `interstitial.InterstitialAdPreloader` | | **Ad Manager** | | | | Ad Request | `admanager.AdManagerAdRequest` | `common.AdRequest` (Now directly implemented in the `AdRequest` class) | | Ad View | `admanager.AdView` | `banner.AdView` (No `AdManagerAdView` class) | | App Event Listener | `admanager.AppEventListener` | `common.OnAppEventListener` | ## 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()` | | Add Network Extras (AdMobAdapter) | `AdRequest.Builder().addNetworkExtrasBundle(Class<MediationExtrasReceiver>, Bundle networkExtras)` | `AdRequest.Builder(String adUnitId).setGoogleExtrasBundle(Bundle extraBundle)` | | Add Network Extras (Ad Source Adapter) | `AdRequest.Builder().addNetworkExtrasBundle(Class<MediationExtrasReceiver>, Bundle networkExtras)` | `AdRequest.Builder(String adUnitId).putAdSourceExtrasBundle(Class<MediationExtrasReceiver> adapterClass, Bundle adSourceExtras)` | | Custom Targeting | `AdRequest.Builder().setCustomTargeting(String key, String value)` | `AdRequest.Builder(String adUnitId).putCustomTargeting(String key, String value)` | | **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 Builder | `AdLoader.Builder(Context context, String adUnitId).forNativeAd(NativeAd.OnNativeAdLoadedListener onNativeAdLoadedListener)` | `NativeAdRequest.Builder(String adUnitId, nativeAdTypes: List<NativeAdType>)` (Include `NativeAd.NativeAdType.NATIVE` in `nativeAdTypes`) | | Native Load | `AdLoader.Builder(...).build().loadAd(AdRequest request)` | `NativeAdLoader.load(NativeAdRequest request, NativeAdLoaderCallback callback)` | | Native Ad Register | `NativeAdView.setNativeAd(NativeAd nativeAd)` | `NativeAdView.registerNativeAd(NativeAd nativeAd, mediaView: MediaView?)` | | Set an App Event Listener (Banner) | `AdManagerAdView.appEventListener` | `BannerAd.adEventCallback` (`onAppEvent(name: String, data: String?)` is now part of the `BannerAdEventCallback`) | | Set an App Event Listener (Interstitial) | `AdManagerInterstitialAd.appEventListener` | `InterstitialAd.adEventCallback` (`onAppEvent(name: String, data: String?)` is now part of the `InterstitialAdEventCallback`) | | **Callbacks** | | | | onAdOpened | `AdListener.onAdOpened()` | `AdEventCallback.onAdShowedFullScreenContent()` | | onAdClosed | `AdListener.onAdClosed()` | `AdEventCallback.onAdDismissedFullScreenContent()` | | 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)` | | onCustomFormatAdLoaded | `OnCustomFormatAdLoadedListener.onCustomFormatAdLoaded(NativeCustomFormatAd ad)` | `NativeAdLoaderCallback.onCustomNativeAdLoaded(CustomNativeAd customNativeAd)` | | onPaidEventListener | `OnPaidEventListener.onPaidEvent(AdValue value)` | `AdEventCallback.onAdPaid(value: AdValue)` (Format-specific e.g., `banner.BannerAdEventCallback.onAdPaid(value: AdValue)`) | | onVideoMute | `onVideoMute(muted: Boolean)` | `onVideoMute(isMuted: Boolean)` | | onAdPreloaded | `onAdPreloaded(preloadId: String, responseInfo: ResponseInfo?)` | `onAdPreloaded(preloadId: String, responseInfo: ResponseInfo)` | | **Preloading** | | | | Configuration | `PreloadConfiguration.Builder(String adUnitId).build()` | `PreloadConfiguration(AdRequest request)` |
For details, see Extend Agent Mode with skills.
Invoke the skill in your prompt
After you have added the skill to your project, use the following example prompts to invoke it in your AI tool:
Android Studio
To invoke the skill, type @ and select the gma-migrate skill.
@gma-migrate Migrate the files in my project from the old Google Mobile Ads SDK to the new 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.