Provides a reusable base activity for launching sample applications with language choice (Java/Kotlin). Encapsulates the logic for presenting a list of samples and handling user selection, making it easily extractable for any Android project needing a similar launcher UI. Demonstrates clean separation of concerns and minimal Firebase coupling.

A generic RecyclerView adapter for displaying sample choices with titles and descriptions. Designed to be decoupled from specific data models and Firebase dependencies, allowing reuse in any Android app requiring a simple list selector. Shows skilled implementation of view binding and click handling patterns.

Custom lint detector that identifies and flags Hungarian notation in variable names. Self-contained and framework-independent, this detector can be plugged into any Android project's lint configuration to enforce naming conventions. Demonstrates expertise in creating precise, useful lint rules that improve code readability.

Custom lint detector that prevents mixing of Java and Kotlin packages in imports (e.g., importing android.view.View in Kotlin files). Helps maintain language purity in mixed-language projects. Highly reusable across Android projects as it addresses a common interoperability issue with minimal configuration.