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

Release year: 8/2026
Udemy
Author: Abbass Masri - MasterCoding.io
Duration: 12h 15m
Type of distributed material: Video tutorial
Language: English
Description: This course is Part 5 of The Complete Android 16 Developer Course, where you build a complete Point of Sale system from scratch using Kotlin and Jetpack Compose—a production-style electronics retail POS app rather than a simplified demo. It includes a fast, responsive product catalog with smartphones, gaming consoles, computers, GPUs, laptops, and accessories; product search, filtering, and category navigation; a live shopping cart managed through a ViewModel with quantity controls and automatic totals; discounts, taxes, and checkout validation; multiple and partial payment scenarios; offline-first storage with Room Database; inventory and stock management with out-of-stock protection; receipt generation; refund and transaction handling; a sales and analytics dashboard; clean navigation between screens; and loading, empty, and error states.

You learn how the parts of a modern Android application work together, not just how to create individual Compose components: structuring a scalable Android project, how MVVM separates UI, state, and business logic, why cart state belongs in a ViewModel, how StateFlow keeps Compose screens reactive, how repositories connect Room to the rest of the app, how to model products, orders, payments, and inventory, how to handle real-world checkout edge cases, how to build reusable Material 3 components, how to keep a growing codebase maintainable, and how to design an app that works without internet. Technologies used include Kotlin, Android 16, Jetpack Compose, Material 3, Room Database, Hilt dependency injection, MVVM, Clean Architecture, Kotlin Coroutines, StateFlow, and Compose Navigation.

The course builds the application together one feature at a time, explaining every architectural decision and writing every important line of code, with no unexplained starter projects, large copy-pasted sections, or sudden jumps to finished code—you see the app grow from an empty project into a complete POS system. It is ideal for Android developers ready to move beyond beginner projects, students wanting a strong portfolio application, Kotlin developers learning production-style Android architecture, freelancers interested in creating software for local businesses, developers wanting practical experience with Compose, Room, and MVVM, and students who completed Parts 1–4. You should understand Kotlin fundamentals and have basic familiarity with Jetpack Compose; completing Parts 1–4 prepares you, though developers with equivalent experience can follow along. By the end, you'll have a portfolio-ready POS application and a deeper understanding of how professional Android apps are planned, structured, and built, plus the architectural confidence to create your next application without depending on step-by-step tutorials.

Video format: MP4
Video: AVC, 1920x1080, 16:9, 30fps, 1624kbps
Audio: AAC, 44.1Hz, 128kbps, stereo