This repository is a collection of Android quickstart samples demonstrating various Firebase products. Each sample is a standalone Android application showcasing integration with Firebase services such as Authentication, Realtime Database, Firestore, Cloud Storage, Cloud Functions, Analytics, and more. The samples are provided in both Java and Kotlin, often with parallel implementations, and follow modern Android architecture patterns including ViewModels, Navigation Component, and Jetpack Compose in newer samples. The repository includes shared internal modules for common UI components (chooserx) and custom lint rules (lintchecks) to maintain code quality across samples. The primary purpose is to serve as educational resources for developers learning to integrate Firebase into Android applications.