The Complete Android 16 Developer Course [Part 5] - Pos App

What you'll learn

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Build a complete, real-world Point of Sale app from scratch with Kotlin and Jetpack Compose
Scan barcodes and QR codes with CameraX and ML Kit to add items to the cart instantly
Structure a production-ready app with MVVM and Clean Architecture & Repositories
Manage complex UI state with ViewModel, StateFlow, and unidirectional data flow so the cart stays in sync across screens
Store products, categories & orders offline with Room so the app keeps selling without internet
Implement a full checkout flow with quantities, discounts, taxes, multiple payment methods, and change calculation
Build inventory management with stock tracking, low-stock alerts, and product images
Create sales reports and dashboards with charts, filtered by date, cashier, and payment method
Handle admin and cashier roles with login, permissions, and session management
Navigate between screens using Compose Navigation with type-safe arguments and nested graphs
Requirements

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Nothing, Just your Laptop!
Description

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Stop building small demo apps. Build an Android application a real business could use.In Part 5 of The Complete Android 16 Developer Course, you'll build a complete Point of Sale system from scratch using Kotlin and Jetpack Compose.This isn't a simplified checkout screen or another disconnected tutorial project. You'll create a production-style electronics retail POS app with a responsive product catalog, live shopping cart, checkout workflow, inventory management, receipt generation, offline storage and sales analytics.The product catalog includes smartphones, gaming consoles, computers, GPUs, laptops, accessories and other electronics-giving you a realistic project that looks impressive in a professional portfolio.WHAT YOU'LL BUILDA fast, responsive electronics product catalogProduct search, filtering and category navigationA live shopping cart managed through a ViewModelQuantity controls and automatic total calculationsDiscounts, taxes and checkout validationMultiple and partial payment scenariosOffline-first storage with Room DatabaseInventory and stock managementOut-of-stock protectionReceipt generationRefund and transaction handlingA sales and analytics dashboardClean navigation between application screensLoading, empty and error statesWHAT YOU'LL LEARNYou'll learn how the parts of a modern Android application work together-not just how to create individual Compose components.You'll understand:How to structure a scalable Android projectHow MVVM separates UI, state and business logicWhy cart state belongs in a ViewModelHow StateFlow keeps Compose screens reactiveHow repositories connect Room to the rest of the appHow to model products, orders, payments and inventoryHow to handle real-world checkout edge casesHow to build reusable Material 3 componentsHow to keep a growing codebase maintainableHow to design an application that works without an internet connectionTECHNOLOGIES USEDKotlinAndroid 16Jetpack ComposeMaterial 3Room DatabaseHilt dependency injectionMVVMClean ArchitectureKotlin CoroutinesStateFlowCompose NavigationHOW THE COURSE WORKSWe build the application together, one feature at a time. Every architectural decision is explained, and every important line of code is written during the course.There are no unexplained starter projects, large copy-pasted sections or sudden jumps to finished code. You'll see how the application grows from an empty project into a complete POS system.Who this course is for

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This course is ideal for:Android developers ready to move beyond beginner projectsStudents who want a strong portfolio applicationKotlin developers learning production-style Android architectureFreelancers interested in creating software for local businessesDevelopers who want practical experience with Compose, Room and MVVMStudents who completed Parts 1-4 of this seriesRequirements

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You should understand Kotlin fundamentals and have basic familiarity with Jetpack Compose.If you completed Parts 1-4 of The Complete Android 16 Developer Course, you're ready to begin. Developers joining from elsewhere with equivalent Kotlin and Compose experience will also be able to follow along.BY THE END OF THE COURSEYou'll have a complete, portfolio-ready Point of Sale application and a much deeper understanding of how professional Android apps are planned, structured and built.More importantly, you'll develop the architectural confidence to create your next application without depending on step-by-step tutorials.Enroll now and build the Android project that proves you can ship real software.
Android developers who know Kotlin basics but have never built a complete, commercial-grade app from start to finish,Students who finished Parts 1-4 of this series and are ready to put everything together in one real project,Developers stuck in tutorial hell - you can follow along with small demos, but freeze when facing a full app with real Requirements

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,Freelancers and indie developers who want a sellable app they can customize for shops, cafés, and small businesses
Homepage

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