【Compose Multiplatform】Using Dependency Injection with Koin

Introduction

In Compose Multiplatform projects

dependency injection is an important design pattern

Koin, as a lightweight DI framework

is very suitable for cross-platform development

This article will introduce how to use Koin

for dependency injection in Compose Multiplatform

Implementation Steps

Add to your .toml file:

Add to your build.gradle.kts:

Next, we need to implement the specific DI content:

You can implement this based on your actual needs

For example, we might plan to use viewmodel, database, datastore, etc.

You can categorize according to your actual needs

to make your code more maintainable and manageable

If your implementation happens to need `cross-platform` access

for example, accessing Context in Android

then dependency injection needs to be injected separately

Based on different platforms and requirements, we have multiple ways to initialize Koin:

in iOSMain:

in androidMain:

If your implementation happens to not need cross-platform access

you can use the following method to inject directly in commonMain

For koin-compose version 1.2.0, you can use KoinApplication

to make your code more cohesive

Or you can also use the original startKoin:

After that, you can directly use koinViewModel to inject viewmodels

Or for some components, you can use get() in the module to help you get instances

Conclusion

• Koin can be used in Compose Multiplatform
• With appropriate configuration, Koin can be used flexibly on different platforms
• Using Koin greatly simplifies dependency management in cross-platform projects
• Choose the appropriate initialization method based on project scale and complexity