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Software design principles and Android architecture patterns: modularization, SOLID, Clean Architecture, MVVM, and testing.

Chapters

#	Chapter	Topics
16	Gradle & Multi-Module Architecture	Module types, REP/CCP/CRP, api vs implementation, version catalogs, convention plugins
17	SOLID Principles	SRP, OCP, LSP, ISP, DIP — with Kotlin examples and Clean Architecture attribution
18	Architecture & Pragmatic Wisdom	Clean Architecture layers, MVVM, state/events, DI, ETC/DRY/Orthogonality
19	Testing	Testing pyramid, FIRST principles, unit/integration/UI/E2E tests

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Table of contents

• Gradle & Multi-Module Architecture
• SOLID Principles
• Architecture & Pragmatic Wisdom
• Testing