How to fix “No compatible definition found for type 'Context'” from Koin lib?

I just start using Koin lib in android (to replace Dagger 2) and in project which was prepared for tests I have issue with android app context in module:

val M = module
val ctx = androidApplication() //here error



Koin is started in App class:

import android.app.Application
import android.content.Context
import org.koin.android.ext.android.startKoin

class App : Application()

override fun onCreate()
super.onCreate()
startKoin(this, listOf(M))




I get log:

D/App: onCreate()
I/KOIN: [context] create
E/KOIN: [ERROR] - Error while resolving instance for class 'android.app.Application' - error: org.koin.error.NoBeanDefFoundException: No compatible definition found for type 'Application'. Check your module definition


and app crashes. Did I miss something in configuration of Koin? In target project I have few modules which deeply depends on application context. And I don't want to use global reference to this context.

2 Answers
2

Try not to create a val for the applicationAndroid() context but use it directly inside the factory/single closure as a parameter for one of your dependencies.
What I'm doing in my project is something like:

val

applicationAndroid()

val appModule = module(override = true)
factory<Navigator> MyNavigator(androidApplication())



where the MyNavigator class is:

class MyNavigator(private val context: Context): Navigator

override fun goToDetail(detailId: String)
context.startActivity(DetailActivity.getIntent(context, detailId))




p.s.: I did also some experiments with Koin 1.0.0 and I noticed that you can also write something like:

val appModule = module(override = true)
factory<Navigator> MyNavigator(get())



That get() will retrieve the context for you even if there's no dependency in the graph for a Context instance; neither a factory nor a singleton. It might be that Koin does something behind the scenes. I tried to use it with different type of dependencies and it aways works.

get()

Solution is easy but not so obvious.

Somehow Android Studio imports standalone startKoin function instead of specific android function.

So you had to replace

import org.koin.standalone.StandAloneContext.startKoin


To

import org.koin.android.ext.android.startKoin


in Application class

Application

Do tell if this works or not.

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