kotlinlang #koin

Hello. I need some explanation on "how to do hierarchy" in koin e.g. I need differently created retrofit instances for different activities. I can do it by calling startKoin with all modules needed at each activity, that's seems to be ok but I have, for example, a DB manager, that must be application-scoped. by calling startKoin each time i need to provide new instance of DBModule and that's seems not to be OK, 'cause of new instances are about to create in new context. using dagger I could have activity component is somehow related to the main component. how could I achieve the same using koin? btw, still I love this library so far, ty ❤️

☝️ 1

Va Fu

11/26/2017, 6:40 PM

just implement KoinComponent in your class and you'll have inject()

👍 1

Diefferson

12/20/2017, 12:59 PM

I created an MVVM structure using ViewModelProvider.Factory with Koin, what do you think? https://github.com/diefferson/koinExample

hoang

12/31/2017, 10:40 AM

hello, can somebody point me to a comparison between #koin and #kodein ? I'm kind of lost as it's been a while since I last touch kotlin. Thank you

arnaud.giuliani

01/08/2018, 8:59 AM

Hello @Breno you can have a lateinit var property, that you can set after you have injected it in your Activity

themishkun

02/23/2018, 7:56 AM

Hello guys, in our team we're tired of dagger 2 on android, that "rebuild all the things" and "wow much boilerplate, so verbose" stuff. I like koin it seems nice to me, but how can I do java interop with it? Any tips?

elifarley

02/25/2018, 12:04 PM

Hi, I'm evaluating both Koin and Kodein, and I'd like to know if Koin has something similar to the

Multiton

option in Kodein. Also, does it allow you to have other ways of providing dependencies like refSingleton(softReference) or eagerSingleton ? Thanks!

elifarley

02/26/2018, 10:00 PM

I'm experiencing a weird exception which I couldn't fix:

Can't create bean Bean[class=connectors.PanthroClient] due to error: Cyclic dependency detected while resolving class kotlin.Function1

. Any hints off the top of your heads?

rellenberger

03/02/2018, 10:53 PM

Does koin support multiplatform projects?

mgrzechocinski

03/12/2018, 8:14 AM

AFAIK, I can use

get()

to inject one implementation. Frankly, I haven’t yet tried to use

get()

when there are >1 interface implementations in the graph

arnaud.giuliani

04/17/2018, 5:13 PM

Here is the last release note for Koin 0.9.2 - https://medium.com/koin-developers/koin-0-9-2-maintenance-fixes-new-branding-roadmap-for-1-0-0-some-other-nice-announces-94f14648e4ad

cristiangm

04/21/2018, 3:36 PM

I mean, I'm used to DaggerMock which is a wonderful tool and I would like to be able to introduce mocks on UI Tests to not depend on third party services ( for my own services I mostly use WireMock )

dpreussler

04/21/2018, 5:23 PM

hey, i am a bit lost. How you you open a second scope with koin? For android an activity scope for example, something that will be closed again.

realsoc

04/30/2018, 7:15 PM

Can't find a way to declare this as a factory in my Module 😣 Thanks for your help !!

andre.artus

05/06/2018, 12:53 AM

Hi, how do I inject a value into a property that's part of a POJO/POKO or otherwise in a class that does not inherit from ComponentCallbacks (as required by org.koin.android.ext.android.inject)? I have a class that requires a parameter-less constructor and does not implement ComponentCallbacks. It's part of an Android app (17+) written in Kotlin(1.2.41) using Koin (0.9.2). I want to inject my repo into this [non-conforming] class.

arnaud.giuliani

05/11/2018, 6:59 AM

Hello @cristiangm I've also seen the news from Google IO. AndroidX is in alpha-1

AntoineJojo

05/14/2018, 3:53 PM

Hi! Have you already encountered a NoBeanDefFoundException when launching multiple Instrumented tests? In my case launching test methods one by one works, but launching test class produces this error for second test method.

cketti

05/17/2018, 11:32 AM

// In the Activity
val viewModel: MyViewModel by viewModel(parameters = { mapOf("itemId" to R.id.whatever) })

// In the Koin module
viewModel { MyViewModel(get<MyRepo>(), it.values["itemId"] as Int) }

👍 2

andre.artus

05/29/2018, 4:18 AM

I'm using the method proposed by @cketti in my project now, but I'm having some problems with a shared viewmodel. In my setup itemId is read in the master fragment from the arguments passed to it.

model = getViewModel(parameters = { mapOf("itemId" to itemId) })

I'm sharing the viewmodel with the detail fragment so that (in theory) it only needs to load once. I tried

model = getSharedViewModel()

But it fails with:

Caused by: org.koin.error.BeanInstanceCreationException: Can't create bean Factory[class=za.co.ruggedmobile.petermetertest.ui.meters.MetersViewModel, binds~(android.arch.lifecycle.ViewModel)] due to error :
    	kotlin.TypeCastException: null cannot be cast to non-null type <http://kotlin.Int|kotlin.Int>

arnaud.giuliani

06/13/2018, 7:56 AM

Hello @jordan29.04.1197, what do you use in Dagger 2? You can smoothly migrate to Koin, by group of components

Bernardo Ferrari

06/18/2018, 6:00 PM

It is internally kind of inspired by the popular mvvm todo sample from Google. Problem is, I'm accessing Files on the LocalDataSource, to access Files I need the Context, if I need the Context it shouldn't be passed as a parameter (or might leak, since localDataStorage is a singleton), and Application.instance is a not a very good solution. Some people on Reddit told me to user Dagger (a bit overkill of this) or Koin, which is exactly what I am trying, but I have absolutely no idea how to proceed. Could someone shine some light for me?

arnaud.giuliani

06/19/2018, 8:34 AM

Hello @tapchicoma, have you a sample to share?

arnaud.giuliani

06/23/2018, 8:07 AM

We are also preparing beta access to koin 1.0.0

👍 1

arnaud.giuliani

07/02/2018, 9:22 AM

you will have a static

inject()

and

get()

function to help you inject instances

tapchicoma

07/11/2018, 7:44 AM

For example, in dagger

OkHttpClient

declared in base network module, then in new koin modules that requires this client it will be imported from dagger. Eventually only base dependencies will be imported from dagger and then they can be moved in Koin. I think such approach should work.

mgrzechocinski

07/13/2018, 7:11 PM

ah, ok. As described here (https://medium.com/koin-developers/opening-the-koin-1-0-0-beta-version-99cb8be1c308):

The dependency injection API has been reviewed to allow you to use destructured declaration directly, without forcing you to use a Map of value

Seems like I missed paranthesis in lambda arg. This compiles:

factory { (activity: FragmentActivity) -> PermissionManager(activity) }

@arnaud.giuliani Isn’t it missing in the docs example as well: https://beta.insert-koin.io/docs/1.0/documentation/reference/index.html#_injection_parameters?

val myModule = module {
    single{ view : View -> Presenter(view) } // should be: single{ (view : View) -> Presenter(view) }
}

tapchicoma

07/18/2018, 6:14 PM

from what I see

releaseContext()

not actually removes module, but rather drops all

single {}

instances

bachhuberdesign

07/24/2018, 1:56 PM

Stupid question but I didn’t see it in the docs: is there a way I can easily disable Koin debug log output? Or do I need to override AndroidLogger with an empty

debug()

function?

arnaud.giuliani

08/06/2018, 6:29 AM

We'll be working on beta until september to release the stable

👍 2

arnaud.giuliani

08/09/2018, 12:52 PM

https://github.com/InsertKoinIO/koin/issues/79#issuecomment-410486256

Title

arnaud.giuliani

08/09/2018, 12:52 PM

https://github.com/InsertKoinIO/koin/issues/79#issuecomment-410486256

Farzad

08/09/2018, 2:53 PM

Yeah I added the

closeKoin()

function call before starting it and moved it from

main()

Application.module()

and it works

Thanks!

arnaud.giuliani

08/10/2018, 6:45 AM

👍

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