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Fixing the "4 issues were found when checking AAR metadata" Error The error   Execution failed for task ':app:checkDebugAarMetadata'   is a common but frustrating build failure in Android Studio. It indicates a problem with the metadata of one or more Android Archive (AAR) libraries your project depends on. This guide will help you diagnose the root cause and provide step-by-step solutions to resolve it. Step 1: Diagnose the Problem The error message is generic. To find the specific culprit, you need more detailed logs. Open the   Terminal   in Android Studio ( View > Tool Windows > Terminal ). Run one of the following commands to get verbose output: bash ./gradlew :app:checkDebugAarMetadata --info or for even more detail: bash ./gradlew :app:checkDebugAarMetadata --debug Scan the output   for lines containing "AAR metadata" or specific library names. The log will explicitly tell you which library is causing the issue and why (e.g.,   minSdkVersion ...

Fixing "Unable to delete directory" Build Errors in Android Studio If you're encountering the frustrating   "Unable to delete directory '...\app\build'"   error on Windows, you're not alone. This is a common issue where a process, often Android Studio itself or a Gradle daemon, retains a lock on files within the build directory, preventing Gradle from cleaning or rebuilding your project. This guide will walk you through the most effective solutions to resolve this file lock issue and get your builds working again. Understanding the Error The error message typically looks like this: Unable to delete directory 'C:\Users\YourName\YourProject\app\build' Failed to delete some children. This might happen because a process has files open or has its working directory set in the target directory. This is almost always a   Windows file locking issue . The culprit can be: The Gradle Daemon (a background process) Android Studio's internal processes W...

How to Debug Which Dependency Adds a Specific Library or Class Encountering a duplicate class error or an unexpected library in your Android project? A common culprit is a   transitive dependency —a library that is automatically included by one of your direct dependencies. Thankfully, Gradle provides a powerful tool to investigate this: the dependency tree. This guide will show you how to generate and read this tree to find the source of any problem library, like the common   listenablefuture   conflict. The Quick Command The simplest way to see your project's dependency hierarchy is to run a command in the terminal. Open the   Terminal   inside Android Studio ( View > Tool Windows > Terminal ). Run the following command: bash ./gradlew app:dependencies This will output the entire dependency tree for your   app   module to the terminal. If your main module has a different name (e.g.,   myapp ), replace   app   with that name: bash ...