Erik Hellman

MarkdownComposer. A PoC app for rendering Markdown using Jetpack Compose

KotlinAsyncWithCoroutines. Sample project showing asynchronous loading with coroutines and LifecycleObserver

android-blex. A wrapper for the Bluetooth GATT APIs on Android.

RxJavaAndDiffUtil. A simple example of using DiffUtil with RxJava on Android

InstantSearchDemo. An Instant Search Demo for Android using Kotlin Coroutines

advanced-android-course. A number of code labs for Android development

AndroidBleWithCoroutines. Basic repo showing how to do BLE on Android using Kotlin Coroutines

ConstraintLayoutWorkshop. A workshop on ConstraintLayout

RxJavaExplained. Three simple, and somewhat naive, examples of using RxJava in Android

AndroidCoroutinesHelper. A simple DSL and set of extension functions for performing asynchronous calls on Android that also deals with Activity and Fragment lifecycles using Kotlin Coroutines

AndroidBleWrapper. A project demonstrating how to deal with the deficiencies in the Bluetooth Low Energy APIs on Android

apptl. Android Programming: Pushing The Limits - The source code samples and snippets from the book

ConstraintLayoutAnimationDemo. A simple demo of using ConstraintLayout and animating between ConstraintSets

FeatureNotABug. A collection of Android code samples related to my presentation "It's a feature, not a bug"

ShaderDroid. A port of Shadertoy (www.shadertoy.com) for Android

AndroidServiceTester. A simple Android app for testing the behaviour of the Android Service component

PublicSpeaking. My collection of abstracts for public presentations

DataBindingFormValidation. A sample project demonstrating how to do form validation using Android Data Bindings

KotlinCoroutinesWithAndroid. Some examples of using Kotlin Coroutines with Android

ModernAndroidBluetoothLE. A small library demoing how to do modern BLE on Android

base45-kotlin. A Base45 implementation for Kotlin

SimpleNotes. A simple Android application demonstrating how to solve offline-first using the WorkManager and Room

AutoValueDemo. A simple demo of AutoValue with Parcelable and Moshi

kotlin-js-pwa. A demo of a PWA with Kotlin/JS

AndroidForegroundServices. A sample app for testing how foreground services work

WebViewServer. A simple "server" for delivering content to an Android WebView

claude-code-reviewer. A GitHub action that performs code review using Claude Code

AndroidRetrofitDemo. A simple demo of how to use Retrofit, LiveData, and ViewModel to make API calls to Open Weather Map.

Java-Introduction. Introduction to Java Programming for new developers

advent-of-code-2021. Advent of Code 2021

react-native-boilerplate. A React Native project template for building solid applications through separation of concerns between the UI, state management and business logic.

DaggerAndroidTesting. A test project using Dagger 2 and Android

nowinandroid. A fully functional Android app built entirely with Kotlin and Jetpack Compose

okhttp. An HTTP+SPDY client for Android and Java applications.

AndroidTestingCodelab. A code lab for writing tests for an Android application

spotify-web-api-android. A wrapper for Spotify Web API. It uses Retrofit to create Java interfaces from API endpoints

pdf-render-with-expressjs. A simple demo for creating PDFs with Node and Express

DroidconMVVM. "Hello, World!" example of the Model-View-ViewModel pattern

js-testing-demo. A simple fullstack project for learning testing and QA

TodoForAndroidTraining. A simple TODO application meant for practicing basic Android development. Instructions in Swedish.

FlutterNavigationTests. A simple project for testing navigation in a Flutter app

firebase-jobdispatcher-android. Java

WeatherAppDemo. WeatherAppDemo