What you are building and learning

Understand the complete notes-to-study flow before opening the IDE.

PocketCards turns your study notes into editable flashcards using Gemini through Firebase AI Logic. You will run the app, trace its implementation, enable real inference, make a test-first validation improvement, and verify failures. The goal is to understand why the code works and where its guarantees stop.

Meet PocketCards

PocketCards home screen with a sample deck and personal library — Your learning library

PocketCards light theme with layered flashcards and daily progress — Study one card at a time

PocketCards dark theme with review actions and flashcard filters — Keep learning in dark mode

Baseline, not an empty starter

This codelab starts from the completed sample at commit c527701. There is no separate starter project. Reading exercises are explicitly labeled; the duplicate-validation exercise is a real code change you implement and test.

By the end you can

Distinguish a model request from manual cards and fake-backed tests.
Explain prompting, structured output and local validation.
Trace Compose → ViewModel → adapter/repository and handle cancellation.
Configure your own Firebase project without publishing configuration or debug tokens.
Verify save failures, last-card completion and source-supported answers.

Plan for 4–5 hours, including experiments. You need basic Kotlin, Compose and coroutines, Git, Android Studio, JDK 17, Android SDK 36 / Build Tools 36.0.0, and an API 26+ device. Firebase is needed only for cloud generation; the manual path and unit tests work without it.

PocketCards source on GitHub

Browse the exact app revision used in this codelab, including setup, Kotlin source and tests.

Companion roadmap

Read the conceptual lessons and complete the module assignments alongside this lab.

Course study guide

Follow the lesson-to-codelab sequence, checkpoints and evidence requirements.

Final assessment

Check your understanding and score your project after completing the course.

Android + AIIntermediate4–5 hours

PocketCards: Understand and Extend an Android AI App

Learn AI fundamentals through a real Kotlin app: clone PocketCards, configure Firebase, generate grounded flashcards, trace MVVM state, and implement a tested validation improvement.

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