Programming Tutorials

  Few logging scenarios are more frustrating for an Android Build Engineer than seeing an   ERROR_CODE_MEDIATION_SHOW_ERROR   or   ClassDefNotFound   exception immediately after configuring a mediation network. You have the SDKs installed, the AdMob dashboard is configured, yet the Meta Audience Network (formerly Facebook Audience Network) refuses to fill requests. The error logs often present as generic "Adapter not found" warnings or crashes pointing to missing methods within  com.facebook.ads . This is rarely a configuration error in the AdMob UI. It is almost exclusively a dependency resolution conflict within Gradle, specifically regarding how the Google Mobile Ads (GMA) SDK adapter interacts with the underlying Meta SDK. The Root Cause: Transitive Dependency Drift To understand why the adapter fails, we must look at the dependency tree. The AdMob mediation adapter is not a standalone binary; it is a bridge. It is compiled against a specific snapshot o...

  If your Meta Audience Network (MAN) revenue has plummeted or your fill rates have flatlined to 0%, you are likely a casualty of Meta’s deprecation of waterfall mediation. Meta has aggressively shifted to a "Bidding Only" model, rendering traditional eCPM floor setups obsolete. For AdOps specialists and developers, this isn't just a configuration tweak; it is a fundamental architectural change in how ad requests are authenticated and auctioned. This guide provides the specific technical steps to migrate from Waterfall to Partner Bidding within AdMob and AppLovin MAX, ensuring your implementation handles the required Real-Time Bidding (RTB) signals correctly. The Root Cause: Why Waterfall Failed To fix the issue, you must understand the mechanism failing under the hood. In a  Waterfall  setup, your mediation platform (AdMob/MAX) called network adapters sequentially based on historical eCPM. When it called Meta, it requested an ad with a hardcoded placement ID. Meta checke...