This is an example repository to demonstrate the good practices of using ViewModel and how usage of AndroidViewModel can make things worst in a codebase

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Code examples ViewModelGoodPractice
Overview

ViewModel Good Practices 🦸‍♂️

This is a example repository to demonstrate the good practices of using ViewModel and how usage of AndroidViewModel can make things worst in a codebase. This repository have both the implementation (good and bad).

📄 Read more about the approaches: https://blog.shreyaspatil.dev/dont-let-viewmodel-knew-about-framework-level-dependencies

👨‍💻 Implementation

If you are just interested in the ➕ diff ➖ of both the approaches then refer to this Pull Request

📱 What's this app about?

This is a simple app which demonstrates the user session management (login/logout actions).

Android.Emulator.-.Pixel_API_29_5554.2021-09-16.22-48-33.mp4
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Comments
  • Hilt Singleton annotations in repository

    Hilt Singleton annotations in repository

    Hi,
    I'm wondering why you repeated the Hilt Singleton annotations in the UserRepository Class?

    They are already explicit declared in DI module?

    @Module
@InstallIn(SingletonComponent::class)
interface RepositoryModule {
	@Singleton
	@Binds
	fun userRepository(repository: InMemoryUserRepository): UserRepository

    So you don't need to add hilt references in the UserRepository

    @Singleton //not necessary?
interface UserRepository {
	suspend fun findById(id: Int): User
	suspend fun add(name: String, email: String): User
}

@Singleton  //not necessary?
class InMemoryUserRepository @Inject constructor() : UserRepository {

    What do you think?

    thanks Roberto

    opened by roby222 1
  • Refactor UserViewModel and add unit tests

    Refactor UserViewModel and add unit tests

    Summary

    • Refactored UserViewModel: Removed inheritance of AndroidViewModel and inherited core ViewModel
    • Added unit tests for UserViewModel
    • Create a separate interface SessionManager for handling all session-related business.
    opened by PatilShreyas 0
Owner
Shreyas Patil
👨‍💻Google Developer Expert for Android ❤️Android, Kotlin 🌎Web Developer ⚙️Open Source Enthusiast 👨‍🚀Organizer @KotlinMumbai
Shreyas Patil
GitHub https://blog.shreyaspatil.dev/dont-let-viewmodel-knew-about-framework-level-dependencies
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