This error, encountered during Android application development, signifies a problem in the process of combining application code with its resources, such as layouts, images, and strings. An example includes a scenario where the application attempts to use a resource ID that is undefined or incorrectly referenced within the project’s XML or Java/Kotlin code. This failure halts the build process, preventing the creation of a final application package (APK or AAB).
Its resolution is crucial for successful application builds and deployments. Addressing the underlying issues ensures proper application functionality, correct user interface display, and overall stability. Historically, these issues arose frequently due to manual resource management, naming conflicts, or inconsistencies between resource declarations and references within the application code. Proper build environment configurations, including up-to-date Android SDK Build-Tools, contribute to a smoother compilation process.
