【Compose Multiplatform】Using Dependency Injection with Koin

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

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

• 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