4. Android app architecture

This section presents the basic building blocks of Android apps: activities, viewmodels and fragments. We will learn how they can be created, connected and managed. Furthermore, we will study best practices for defining the architecture of an Android app.

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Table of contents

• 4.1. Activities
• 4.2. ViewModels
• 4.3. Fragments
• 4.4. 1-N vs N-N architectures