Issue
Recently I published a library with koin; when I used this library in my own application, everything is ok because I don't use Koin in my application, but if I startKoin in my application and the library both, the app crashes!.
Is there any way to use koin in application and library same? how can I call startKoin in my library without facing any problem in apps that used koin and called startKoin?
org.koin.core.error.KoinAppAlreadyStartedException: A Koin Application has already been started
Solution
After some research, I found that I should use a custom KoinComponent.
Based on the documentation:
For SDK Makers, you can also work with Koin in a non global way: use Koin for the DI of your library and avoid any conflict by people using your library and Koin by isolating your context
// create a KoinApplication
val myApp = koinApplication {
// declare used modules
modules(coffeeAppModule)
}
And keep myApp in a object:
// Get a Context for your Koin instance
object MyKoinContext {
var koinApp : KoinApplication? = null
}
// Register the Koin context
MyKoinContext.koinApp = KoinApp
and then :
interface CustomKoinComponent : KoinComponent {
// Override default Koin instance, intially target on GlobalContext to yours
override fun getKoin(): Koin = MyKoinContext?.koinApp.koin
}
And now, you register your context and run your own isolated Koin components:
MyKoinContext.koinApp = myApp
class ACustomKoinComponent : CustomKoinComponent(){
// inject & get will target MyKoinContext
}
Answered By - hamid Mahmoodi
Answer Checked By - Gilberto Lyons (JavaFixing Admin)
