kotlinlang #koin

@longzma13 as @arnaud.giuliani mentioned above, they are reworking the Scope/Module parts. I would bump back to beta 8 until the docs are updated. As it's changed a little bit.

1 reply · 2 participants

arnaud.giuliani

09/03/2018, 12:58 PM

https://github.com/InsertKoinIO/koin/issues/218

👍 1

🎉 2

4 replies · 2 participants

Hiosdra

09/05/2018, 6:30 AM

Hey, is there any way to resolve one component as default component and second component as named component? Default - without providing anything, and custom - providing it's name like other components? Simple declaring one component wothout name and one with, doesn't work for me. These two components share the same interface. Thanks for help

5 replies · 3 participants

AntoineJojo

09/11/2018, 1:28 PM

Hey! Has someone already use

inject()

with a generic type? For instance:

class BaseActivity<P: BasePresenter> { val presenter: P by inject() }

3 replies · 2 participants

tapchicoma

09/13/2018, 12:23 PM

you should pass

loadProperties = true

startKoin()

1 reply · 2 participants

Paul Woitaschek

09/15/2018, 4:36 PM

Is there a project where I can see how coin works in a multi module project?

3 replies · 2 participants

Paul Woitaschek

09/16/2018, 5:08 AM

And how do you test that you DI setup is correct and does not throw exceptions at runtime?

6 replies · 4 participants

pavlospt

09/19/2018, 6:30 AM

Why do you need Activity context?

3 replies · 2 participants

pavlospt

09/19/2018, 6:32 AM

that would be something that your presenter should delegate to the View

1 reply · 2 participants

esdudnik

09/20/2018, 3:33 PM

Hello guys. I have a small project using koin. I stared to write unit test for some classes and face a strange issue. From the beginning everything was fine, but after I added next code in build.gradle file(took this from Robolectric official site)

testOptions {
        unitTests {
            includeAndroidResources = true
        }
    }

all of my tests crashed with strange errors. From the beginning I received

org.koin.error.AlreadyStartedException: Koin is already started. Run startKoin only once or use loadKoinModules

and when I added

testImplementation 'org.koin:koin-test:1.0.0'

I received error

java.lang.NoSuchMethodError: org.koin.standalone.StandAloneContext.startKoin$default(Lorg/koin/standalone/StandAloneContext;Ljava/util/List;ZLjava/util/Map;ILjava/lang/Object;)Lorg/koin/Koin;

I extend my test classes from AutoCloseKoinTest() but errors stay the same. Do anybody faced this problem? Or probably somebody know how to fix it. I will appreciate any help.

5 replies · 2 participants

orafaaraujo

09/24/2018, 7:42 PM

Hi, everyone How do I inject something inside a

BroadcastReceiver

5 replies · 2 participants

hmole

09/25/2018, 11:19 AM

Hello. Does Koin works with multiplatform(specifically new

kotlin-multiplatform

plugin)

4 replies · 3 participants

ritesh

09/26/2018, 11:32 AM

Was wondering what the difference between startKoin() and loadKoinModules() when initializing koin.

1 reply · 2 participants

ritesh

09/26/2018, 1:53 PM

Is it possible to create Scope for ViewModels in koin?

1 reply · 2 participants

arnaud.giuliani

09/26/2018, 7:30 PM

if you previously used `release()`to drop single definitions, better use now

scope

definition tied to the same scope Id

7 replies · 2 participants

arnaud.giuliani

10/01/2018, 11:45 AM

use the

checkModules

function from

koin-test

to check your modules tree

1 reply · 2 participants

elifarley

10/03/2018, 12:32 PM

2018-10-03 09:31:10:604 (KOIN)::[i] [PrintLogger] display debug = true
2018-10-03 09:31:10:616 (KOIN)::[i] [context] create
2018-10-03 09:31:10:726 (KOIN)::[i] [module] declare Single [name='ISimpleDataSourceFactory',class='jdbc.ISimpleDataSourceFactory']
2018-10-03 09:31:10:726 (KOIN)::[i] [module] declare Single [name='DataSource',class='javax.sql.DataSource']
2018-10-03 09:31:10:728 (KOIN)::[i] [module] declare Single [name='ServerConfig',class='org.http4k.server.ServerConfig']
2018-10-03 09:31:10:728 (KOIN)::[i] [module] declare Single [name='SteelheartRestClient',class='stht.client.SteelheartRestClient']
2018-10-03 09:31:10:738 (KOIN)::[i] [module] declare Single [name='customer',class='klib.db.SimpleObjectSessionFactory']
2018-10-03 09:31:10:742 (KOIN)::[i] [module] declare Single [name='CustomerService',class='stht.service.CustomerService']
2018-10-03 09:31:10:748 (KOIN)::[i] [module] declare Single [name='app.routes',class='kotlin.jvm.functions.Function1']
2018-10-03 09:31:10:749 (KOIN)::[i] [module] declare Single [name='Http4kServer',class='org.http4k.server.Http4kServer']
2018-10-03 09:31:10:749 (KOIN)::[i] [modules] loaded 8 definitions
2018-10-03 09:31:10:749 (KOIN)::[d] [modules] loaded in 53.834704 ms
2018-10-03 09:31:10:750 (KOIN)::[d] Koin started in 136.243142 ms
2018-10-03 09:31:10:779 (KOIN)::[i] +-- 'org.http4k.server.Http4kServer' 
2018-10-03 09:31:10:779 (KOIN)::[d] |-- [Single [name='Http4kServer',class='org.http4k.server.Http4kServer']]
2018-10-03 09:31:10:784 (KOIN)::[i] |	+-- 'kotlin.jvm.functions.Function1' 
2018-10-03 09:31:10:795 (KOIN)::[d] |	|-- [Single [name='app.routes',class='kotlin.jvm.functions.Function1']]
2018-10-03 09:31:10:796 (KOIN)::[i] |	|	+-- 'stht.service.CustomerService' 
2018-10-03 09:31:10:797 (KOIN)::[d] |	|	|-- [Single [name='CustomerService',class='stht.service.CustomerService']]
2018-10-03 09:31:10:797 (KOIN)::[i] |	|	|	+-- 'klib.db.SimpleObjectSessionFactory' 
2018-10-03 09:31:10:797 (KOIN)::[d] |	|	|	|-- [Single [name='customer',class='klib.db.SimpleObjectSessionFactory']]
2018-10-03 09:31:10:797 (KOIN)::[i] |	|	|	|	+-- 'javax.sql.DataSource' 
2018-10-03 09:31:10:797 (KOIN)::[d] |	|	|	|	|-- [Single [name='DataSource',class='javax.sql.DataSource']]
2018-10-03 09:31:10:800 (KOIN)::[i] |	|	|	|	|	+-- 'jdbc.ISimpleDataSourceFactory' 
2018-10-03 09:31:10:800 (KOIN)::[d] |	|	|	|	|	|-- [Single [name='ISimpleDataSourceFactory',class='jdbc.ISimpleDataSourceFactory']]
2018-10-03 09:31:10:830 (KOIN)::[e] Error while resolving instance for class 'jdbc.ISimpleDataSourceFactory' - error: org.koin.error.BeanInstanceCreationException: Can't create definition for 'Single [name='ISimpleDataSourceFactory',class='jdbc.ISimpleDataSourceFactory']' due to error :
		Can't find property 'db.driver'
		klib.db.DataSourceKitKt$dsModule$1$1.invoke(dataSourceKit.kt:34)

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1 reply · 2 participants

Jemshit Iskenderov

10/05/2018, 1:33 PM

Hi, i have question regarding to Scoping: Desired: Create scope for ViewModel, should be created when ViewModel is created, released in

ViewModel#onCleared()

(not Activity lifecycle) Aim: ViewModel injects

UseCaseA

and

UseCaseB

, and both use cases inject

RealTimeConnection

interface. Implementation of

RealTimeConnection

injects

ClassC

. I want

RealTimeConnection

implementation and

ClassC

to be created only once in ViewModel scope. I have tried:

module("app") {
    scope(SCOPE_VM) {
        ClassC()
    }
    scope(SCOPE_VM) { RealTimeConnectionImplementation(get()) as RealTimeConnection }

    factory { UseCaseA(get()) }  // parameter is RealTimeConnection
    factory { UseCaseB(get()) }  // parameter is RealTimeConnection
}

Question: i can not inject

UseCaseA

and

UseCaseB

from constructor of ViewModel because scope is created in

init{}

block of ViewModel. I can not use

by inject, get<>

inside ViewModel. What is the solution? Thanks

1 reply · 1 participant

Jemshit Iskenderov

10/05/2018, 2:16 PM

I found i can inject useCases after i create scope using

by inject()

if i implement

KoinComponent

. Is this the right way?

3 replies · 2 participants

Jason

10/06/2018, 2:38 PM

Hello I am a newbie in Koin. Where can I start with Koin ?

1 reply · 2 participants

Vinicius Carvalho

10/09/2018, 2:35 PM

Hi there, I'm switching from kodein to koin on my ktor application. Previously I've created an extension function to make the Application class available to

KodeinAware

classes to inject it. Is it possible to have access to the

Application

instance from my managed instances in koin?

8 replies · 3 participants

rezenebe

10/10/2018, 9:29 PM

is there a reason to initiate koin multiple times in a project? calling startKoin() in other modules perhaps?

2 replies · 2 participants

rezenebe

10/12/2018, 3:13 PM

val testRemoteRepository by inject<ConfigDatasource>()

I'm getting an "unresolved reference" on ConfigDataSource which is 95% similar to the example. There is no red or missing dependencies in my code, any idea on where to start debugging this? I was trying to write checkModule Tests, but I can't get that far w/ ConfigDataSource compile time issues

4 replies · 2 participants

rezenebe

10/12/2018, 10:21 PM

val remoteDatasourceModule = module {
    single { createOkHttpClient() }
    single { createWebService<ConfigDatasource>(get(), getProperty(DatasourceProperties.SERVER_URL)) }

    single { ConfigRepositoryImpl(get()) as ConfigRepository }
}

object DatasourceProperties {
    const val SERVER_URL = BuildConfig.BASE_URL
}

This seems to work just fine when I hardcode the SERVER_URL otherwise i get "Can't find property"

3 replies · 3 participants

Albert

10/18/2018, 8:48 AM

What I understand from the documentation, generics are supported only by giving a name to the

single

module {
  single("foo") { Repository<Foo>() }
  single("bar") { Repository<Bar>() }
}

val fooRepo: Repository<Foo>() by inject("foo")
val barRepo: Repository<Bar>() by inject("bar")

Is there an alternative that I could use

inject()

(without key) instead of making the injector aware what the key should be?

6 replies · 3 participants

Efe

10/19/2018, 8:08 AM

Hi guys, probably it’s an easy question but I’m too newbie to koin. How can I inject an android framework created object (like Activity or Fragment) to my presenter layer as a View?