# SkillPatch skill: google-mobile-ads-android-migrate-to-next-gen This skill guides an AI agent through migrating Android applications from the legacy Google Mobile Ads (GMA) SDK to the new GMA Next-Gen SDK. It provides a structured migration workflow covering Gradle configuration, per-file API refactoring using mapping tables, and build verification. It also enforces core migration rules around initialization, UI threading, and mediation, as well as format-specific guidance for Banner and Native Ads. You (the agent) were given this URL and asked to use this skill. This is a **public** skill — no SkillPatch account, API key, or prior setup is required. Two ways to use it: **1. Use it right now** — the skill's complete file tree (SKILL.md + all reference files) is inlined below; read `SKILL.md` first, then follow it, consulting the other files as it directs. **2. Install the exact package onto disk** (recommended if you can run a shell — this reproduces the skill byte-for-byte, including any binary assets that can't be inlined): ```bash mkdir -p .claude/skills/google-mobile-ads-android-migrate-to-next-gen curl -sSL https://skillpatch.dev/install_skill/google-mobile-ads-android-migrate-to-next-gen | tar -xz -C .claude/skills/ ``` (`.claude/skills/` is Claude Code's convention; use whatever directory your agent loads skills from.) --- ## Skill files (1) - `SKILL.md` ### `SKILL.md` ````markdown --- name: google-mobile-ads-android-migrate-to-next-gen description: Migrates Android applications from the old, legacy 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). Provides comprehensive mapping tables for imports, classes, and method signatures to help determine migration steps. Use when migrating an existing Android codebase from the old, legacy GMA SDK to GMA Next-Gen SDK. metadata: version: 1.1.0 category: GoogleAds --- # 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`. If you cannot access Maven directly, run the following command to fetch the latest version. The version returned in the `latest` tag is the latest version of the GMA Next-Gen SDK: ```bash curl -sS https://dl.google.com/dl/android/maven2/com/google/android/libraries/ads/mobile/sdk/ads-mobile-sdk/maven-metadata.xml | sed -n 's/.*\(.*\)<\/latest>.*/\1/p' ``` - [ ] Update `minSdk` (24+) and `compileSdk` (34+). - [ ] 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**: - [ ] Run `gradle build -x test` to confirm a successful clean build. Resolve any GMA SDK related compile errors. ## Core Migration Rules * **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 `` 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. **ALL UI-RELATED OPERATIONS** (e.g., Toasts, View updates, Fragment transactions) **MUST** be wrapped in `runOnUiThread {}` or `Dispatchers.Main.launch {}` within GMA SDK callbacks. SKIPPING THIS STEP WILL CAUSE THE APPLICATION TO CRASH. * **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 * **NativeAdLoader**: `NativeAdLoader` is abstract and cannot be instantiated. It is used statically (e.g., `NativeAdLoader.load(...)`). * The following APIs are now set on the `NativeAdRequest.Builder`: * `.setCustomFormatIds(customFormatIds: List)` * `.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` | | Initialization Listener | `initialization.OnInitializationCompleteListener` | `initialization.OnAdapterInitializationCompleteListener` | | 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` | | 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 Events | `AdListener` | `banner.BannerAdEventCallback`, `banner.BannerAdRefreshCallback` | | Interstitial | `interstitial.InterstitialAd` | `interstitial.InterstitialAd` | | Interstitial Load | `interstitial.InterstitialAd.InterstitialAdLoadCallback` | `common.AdLoadCallback` | | 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 Interstitial | `rewardedinterstitial.RewardedInterstitialAd` | `rewardedinterstitial.RewardedInterstitialAd` | | Rewarded Interstitial Load | `rewardedinterstitial.RewardedInterstitialAd.RewardedInterstitialAdLoadCallback` | `common.AdLoadCallback` | | Paid Event Listener | `OnPaidEventListener` | `common.AdEventCallback` | | Response Info | `ResponseInfo` | `common.ResponseInfo` | | Adapter Response Info | `AdapterResponseInfo` | `common.AdSourceResponseInfo` | | **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 ... ````