Android with Kotlin & Jetpack Compose

Android Studio and Your First Compose App

Create a Jetpack Compose project, understand its files, use live previews and run it on a phone.

Layouts: Column, Row, Box and Modifiers

Arrange UI with Column, Row and Box, and style anything with Modifiers — padding, size, background, click handling.

State and User Input

Make screens interactive: remember state, react to clicks, read text fields and validate input — the heart of Compose.

Forms and Input Validation in Compose

Build a sign-up form with OutlinedTextField, the right keyboard for each field, and error messages that appear exactly where the problem is.

Lists with LazyColumn and LazyVerticalGrid

Show long scrolling lists and grids efficiently with Lazy layouts — Compose's simpler replacement for RecyclerView.

Navigation Between Screens

Build a multi-screen app with Navigation Compose: routes, passing arguments, the back stack, and opening other apps.

Scaffold, Top Bars and Bottom Navigation

Give your app a professional frame: a top app bar, a bottom navigation bar with tabs, a floating action button, all coordinated by Scaffold.

Dialogs, Snackbars and Bottom Sheets

Confirm costly actions, offer undo, and show extra options in a bottom sheet: the small interactions that make an app feel safe and polished.

ViewModel, StateFlow and Coroutines

Structure your app like the pros: keep state and logic in a ViewModel, expose it as StateFlow, and do slow work in viewModelScope.

Saving Data: DataStore and Room

Remember settings with DataStore and store orders in a Room database whose changes flow straight into your UI.

Loading Data with Retrofit and Coroutines

Fetch JSON from a web API with Retrofit and suspend functions, and show loading, success and error states with a sealed UI state.

Permissions, Camera and Photos

Let users set a profile photo and photograph products. Use the permission-free Photo Picker, request runtime permissions politely, and load images with Coil.

Notifications and Background Work

Send useful notifications (order shipped, study reminder) the right way, and schedule reliable background jobs with WorkManager and coroutines.

Material 3 Theming, Dark Mode and Polish

Apply your brand with Material 3 colour schemes, support dark mode and dynamic colour, load images with Coil, and make the app accessible.

Testing and Debugging Compose Apps

Find bugs fast with Logcat, the debugger and Layout Inspector, then protect your app with ViewModel unit tests and Compose UI tests.

Final Project and Publishing

Build the complete Learnix Shop app in Compose, create a signed release, and prepare it for Google Play.