This is called at the end of the mediator's life cycle. The adapter is expected to release any resources and shut down. After this method is called, any subsequent calls to any other method on this adapter may throw an IllegalStateException.
This method is not guaranteed to be called. There are a number of reasons that this method can be skipped, such as a force close of the application.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-20 UTC."],[[["\u003cp\u003e\u003ccode\u003eMediationAdapter\u003c/code\u003e is an interface for third-party ad networks, but it's now deprecated in favor of \u003ccode\u003ecom.google.android.gms.ads.mediation.Adapter\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eIt defines methods to manage the adapter's lifecycle, such as \u003ccode\u003eonDestroy\u003c/code\u003e, \u003ccode\u003eonPause\u003c/code\u003e, and \u003ccode\u003eonResume\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eMediationAdapter\u003c/code\u003e includes constants like \u003ccode\u003eCAPABILITIES_DELAYED_IMPRESSIONS\u003c/code\u003e, \u003ccode\u003eCAPABILITIES_FLOOR_CPM\u003c/code\u003e, and \u003ccode\u003eCAPABILITIES_RETURNS_CPM\u003c/code\u003e to indicate the adapter's capabilities.\u003c/p\u003e\n"],["\u003cp\u003eThe direct subclasses (\u003ccode\u003eMediationBannerAdapter\u003c/code\u003e, \u003ccode\u003eMediationInterstitialAdapter\u003c/code\u003e, \u003ccode\u003eMediationNativeAdapter\u003c/code\u003e) are also deprecated and should be replaced with \u003ccode\u003ecom.google.android.gms.ads.mediation.Adapter\u003c/code\u003e.\u003c/p\u003e\n"]]],["`MediationAdapter` is a deprecated interface for third-party ad networks, replaced by `com.google.android.gms.ads.mediation.Adapter`. Key actions include tearing down adapter control via `onDestroy`, pausing processing with `onPause`, and resuming with `onResume`. It supports delayed impressions (`CAPABILITIES_DELAYED_IMPRESSIONS`), specifying floor CPM values per request (`CAPABILITIES_FLOOR_CPM`), and returning CPM values per response (`CAPABILITIES_RETURNS_CPM`). There is also a nested `AdapterInfoBuilder` class. The use of the subclasses `MediationBannerAdapter`, `MediationInterstitialAdapter` and `MediationNativeAdapter` is also deprecated.\n"],null,["# MediationAdapter\n================\n\nKotlin \\|[Java](/admob/android/early-access/nextgen/reference/com/google/android/gms/ads/mediation/MediationAdapter \"View this page in Java\") \n\n\n```\ninterface MediationAdapter : MediationExtrasReceiver\n```\n\n\u003cbr /\u003e\n\nKnown direct subclasses \n[MediationBannerAdapter](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationBannerAdapter), [MediationInterstitialAdapter](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationInterstitialAdapter), [MediationNativeAdapter](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationNativeAdapter) \n\n|--------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------|\n| [MediationBannerAdapter](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationBannerAdapter) | **This interface is deprecated.** Use \\[com.google.android.gms.ads.mediation.Adapter\\] instead |\n| [MediationInterstitialAdapter](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationInterstitialAdapter) | **This interface is deprecated.** Use \\[com.google.android.gms.ads.mediation.Adapter\\] instead. |\n| [MediationNativeAdapter](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationNativeAdapter) | **This interface is deprecated.** Use \\[com.google.android.gms.ads.mediation.Adapter\\] instead |\n\n*** ** * ** ***\n\n| **This interface is deprecated.** \n| Use \\[com.google.android.gms.ads.mediation.Adapter\\] instead.\n\nAdapter for third party ad networks.\n\nSummary\n-------\n\n| ### Nested types |\n|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `class `[MediationAdapter.AdapterInfoBuilder](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationAdapter.AdapterInfoBuilder) Builder class to specify adapter information. |\n\n| ### Constants |\n|------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `const `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html) | [CAPABILITIES_DELAYED_IMPRESSIONS](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationAdapter#CAPABILITIES_DELAYED_IMPRESSIONS())` = 1` Specifies that the adapter supports delayed impressions. |\n| `const `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html) | [CAPABILITIES_FLOOR_CPM](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationAdapter#CAPABILITIES_FLOOR_CPM())` = 2` Specifies that the adapter supports specifying a floor cpm value per ad request. |\n| `const `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html) | [CAPABILITIES_RETURNS_CPM](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationAdapter#CAPABILITIES_RETURNS_CPM())` = 4` Specifies that the adapter supports returning a floor cpm value per ad response. |\n\n| ### Public functions |\n|------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onDestroy](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationAdapter#onDestroy())`()` Tears down the adapter control. |\n| [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onPause](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationAdapter#onPause())`()` Called when the application calls [onPause](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationAdapter#onPause()) on the ad view. |\n| [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onResume](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationAdapter#onResume())`()` Called when the application calls [onResume](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationAdapter#onResume()) on the ad view. |\n\nConstants\n---------\n\n### CAPABILITIES_DELAYED_IMPRESSIONS\n\n```\nconst val CAPABILITIES_DELAYED_IMPRESSIONS = 1: Int\n```\n\nSpecifies that the adapter supports delayed impressions. \n\n### CAPABILITIES_FLOOR_CPM\n\n```\nconst val CAPABILITIES_FLOOR_CPM = 2: Int\n```\n\nSpecifies that the adapter supports specifying a floor cpm value per ad request. \n\n### CAPABILITIES_RETURNS_CPM\n\n```\nconst val CAPABILITIES_RETURNS_CPM = 4: Int\n```\n\nSpecifies that the adapter supports returning a floor cpm value per ad response. \n\nPublic functions\n----------------\n\n### onDestroy\n\n```\nfun onDestroy(): Unit\n```\n\nTears down the adapter control.\n\nThis is called at the end of the mediator's life cycle. The adapter is expected to release any resources and shut down. After this method is called, any subsequent calls to any other method on this adapter may throw an [IllegalStateException](https://developer.android.com/reference/java/lang/IllegalStateException.html).\n\nThis method is not guaranteed to be called. There are a number of reasons that this method can be skipped, such as a force close of the application. \n\n### onPause\n\n```\nfun onPause(): Unit\n```\n\nCalled when the application calls [onPause](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationAdapter#onPause()) on the ad view. The adapter is expected to pause any processing associated with the ad being shown. \n\n### onResume\n\n```\nfun onResume(): Unit\n```\n\nCalled when the application calls [onResume](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/MediationAdapter#onResume()) on the ad view. The adapter is expected to resume any processing associated with the ad being shown."]]