Caused by: org.koin.core.error.NoBeanDefFoundExcep...

# ktor

[Emirhan Emmez]

Caused by: org.koin.core.error.NoBeanDefFoundException: |- No definition found for class:'com.emirhan.controller.UserDataSourceImp'. Check your definitions!

single<UserDataSource> { UserDataSourceImp() }
single { UserController(get()) }

Is anyone get this error about koin di?

[Nikky]

i am going to guess that the constructor of UserController needs a UserDataSourceImp and not a UserDataSource
try single { UserController(get<UserDataSource>()) } just to figure out if thats the issue

[Emirhan Emmez]

but constructor parameter of UserController is UserDataSourceImp

[Emirhan Emmez]

UserController.kt,UserDataSource.kt,UserDataSourceImp.kt

UserDataSource.ktUserController.ktUserDataSourceImp.kt

[Emirhan Emmez]

you can check

[Nikky]

and with the line

single<UserDataSource> { UserDataSourceImp() }

you tell koin to "store" the Imp as the interface, so when it looks for the specific class.. it fails

[Nikky]

change it to

class UserController(private val userDataSource: UserDataSource)

and it will start working.. and you can use whatever implementation satisfies the interface UserDataSource

[Emirhan Emmez]

i assume i solved it because it throws another exception:
java.lang.NoSuchMethodError: 'double kotlin.time.Duration.toDouble-impl(long, java.util.concurrent.TimeUnit)'

[Emirhan Emmez]

in

single { UserController(get()) }

line

[Emirhan Emmez]

OK i saw there is a open issue about koin does not support kotlin 1.6.0 in #koin

[Emirhan Emmez]

i downgrade to 1.5.31 and its solved 🙂 thx for your help