[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-20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\u003eSignalCallbacks\u003c/code\u003e is an interface used for generating signals from third-party SDKs for bidding in AdMob.\u003c/p\u003e\n"],["\u003cp\u003eIt provides callbacks for success (\u003ccode\u003eonSuccess\u003c/code\u003e) and failure (\u003ccode\u003eonFailure\u003c/code\u003e) during signal generation.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eonFailure\u003c/code\u003e is called with an \u003ccode\u003eAdError\u003c/code\u003e object providing details about the failure, and a deprecated version using a \u003ccode\u003eString\u003c/code\u003e for the failure reason.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eonSuccess\u003c/code\u003e is called with a \u003ccode\u003eString\u003c/code\u003e containing the encrypted signals from the third-party SDK.\u003c/p\u003e\n"]]],["`SignalCallbacks` is an interface for signal generation from third-party SDKs during bidding. It provides two core actions: `onSuccess` and `onFailure`. `onSuccess` is a callback triggered upon successful signal generation, returning the encrypted 3p SDK signals as a string. `onFailure` is called when signal generation fails. There are two version of `onFailure`: one that uses an `AdError` object, and a deprecated one that uses a simple `String` for the reason of failure.\n"],null,["# SignalCallbacks\n===============\n\nKotlin \\|[Java](/admob/android/early-access/nextgen/reference/com/google/android/gms/ads/mediation/rtb/SignalCallbacks \"View this page in Java\") \n\n\n```\ninterface SignalCallbacks\n```\n\n\u003cbr /\u003e\n\n*** ** * ** ***\n\nCallback for signal generation from 3p SDKs for bidding.\n\nSummary\n-------\n\n| ### Public functions |\n|------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onFailure](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/rtb/SignalCallbacks#onFailure(com.google.android.gms.ads.AdError))`(adError: `[AdError](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/AdError)`)` Called when signal generation fails. |\n| [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | ~~[onFailure](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/rtb/SignalCallbacks#onFailure(kotlin.String))~~`(failure: `[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`)` **This function is deprecated.** Use \\[SignalCallbacks#onFailure(AdError)\\] instead. |\n| [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onSuccess](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/rtb/SignalCallbacks#onSuccess(kotlin.String))`(signals: `[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`)` Success callback for a 3p signal generation. |\n\nPublic functions\n----------------\n\n### onFailure\n\n```\nfun onFailure(adError: AdError): Unit\n```\n\nCalled when signal generation fails. \n\n| Parameters |\n|---------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------|\n| `adError: `[AdError](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/AdError) | [AdError](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/AdError) detailing the cause of the failure. |\n\n### onFailure\n\n```\nfun [onFailure](/admob/android/early-access/nextgen/reference/kotlin/com/google/android/gms/ads/mediation/rtb/SignalCallbacks#onFailure(kotlin.String))(failure: String): Unit\n```\n| **This function is deprecated.** \n| Use \\[SignalCallbacks#onFailure(AdError)\\] instead.\n\nCalled when signal generation fails. \n\n| Parameters |\n|---------------------------------------------------------------------------------------------|-----------------|\n| `failure: `[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) | Failure reason. |\n\n### onSuccess\n\n```\nfun onSuccess(signals: String): Unit\n```\n\nSuccess callback for a 3p signal generation. \n\n| Parameters |\n|---------------------------------------------------------------------------------------------|-------------------------------|\n| `signals: `[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) | The encrypted 3p SDK signals. |"]]