Dependency injection (DI) is an implementation of the dependency inversion principle with the aim of separation of concerns by separating the depndency's implementation from the class that's using it. That kind of abstraction makes it possible to have different implementations with the same public methods so the class using it, doesn't need to care which of the implementations is used. This is also especially useful for unit testing.
There are different types of dependency injection:
Koin - a pragmatic lightweight dependency injection framework for Kotlin & Kotlin Multiplatform
📒 NotyKT is a complete 💎Kotlin-stack (Backend + Android) 📱 application built to demonstrate the use of Modern development tools with best practices implementation🦸.
❤️ A sample Marvel heroes application based on MVVM (ViewModel, Coroutines, Room, Repository, Koin) architecture.
🗡 A tool to visualize Dagger 2 dependency graphs
An Android weather application implemented using the MVVM pattern, Retrofit2, Dagger Hilt, LiveData, ViewModel, Coroutines, Room, Navigation Components, Data Binding and some other libraries from the Android Jetpack.
💙 Android sample Avengers chat application using Stream Chat SDK based on MVVM (ViewModel, Coroutines, Room, Hilt, Repository) architecture.
An simple image gallery app utilizing Unsplash API to showcase modern Android development architecture (MVVM + Kotlin + Retrofit2 + Hilt + Coroutines + Kotlin Flow + mockK + Espresso + Junit)
Android Architecture Design Patterns using Kotlin, MVVM, Hilt, LiveData, Room, MediatorLiveData, NetworkBoundResources, Retrofit, AndroidX, ViewModels, Dependency Injection using Dagger2, Repository pattern.
📝 Notify is a simple note application build to demonstrate the use of clean MVVM Architecture with Jetpack Compose and Material-3 guidelines along with some Modern Android development tools.
Extensions for the kotlin-inject dependency injection framework
🧙🏻 Sample HarryPotter application based on MVVM architecture (ViewModel, LiveData, Repository, Coroutines, Koin or Dagger-Hilt, Compose)
Katas for practice Kotlin( Coroutines, dataclasses, delegate properties...) Clean Architecture and best practices in Android(DI, Dagger, MVP, Espresso) implemented by Jorge Sánchez (Xurxodev)
🗡️ A small but powerful & opinionated DI library. Written in Kotlin, and powered by annotation processing.
Dependency Injection framework based on Google's Dagger2 API, optimized for fast builds and for managing large graphs with optional dependencies
Whetstone is a dependency injection framework for Android that greatly simplifies working with Dagger 2 using all the powers of Anvil
Lightweight, minimalistic dependency injection library for Kotlin & Android
Kotlin Dagger2 example project
Koin Annotations - About Koin - a pragmatic lightweight dependency injection framework for Kotlin & Kotlin Multiplatform insert-koin.io
Created by Martin Fowler
Released January 23, 2004