Hey just converted java class to kotlin and After adding kap

Question

Hey just converted java class to kotlin and After adding kapt to my gradle the dagger component is not generated any more anyone here can help `apply plugin kotlin kapt ` ` ` ` implementation com google dagger dagger 2 11 ` ` kapt com google dagger dagger compiler 2 11 `

gildor · Answer

Do you have any build errors

efemoney · Answer

Have you tried to ` gradlew clean` and or rebuild project

denis.shakinov · Answer

Did you add ```kapt generateStubs = true ``` to gradle file

alouanemed · Answer

WelcomeContract Presenter gt cannot be provided without an Provides or Produces annotated method

gildor · Answer

You don t need generateStubs = true

alouanemed · Answer

yeah i don t have it

alouanemed · Answer

< efemoney> yeah done all that

alouanemed · Answer

Module class WelcomeModule Provides fun providePresenterFactory interactor DragonInteractor gt WelcomePresenter return WelcomePresenter interactor

efemoney · Answer

Where is your Provides method for WelcomeContract Presenter

gildor · Answer

But this function returns lambda instead instance of class

efemoney · Answer

Exactly

alouanemed · Answer

aha

denis.shakinov · Answer

< gildor> from which version of kotlin plugin

alouanemed · Answer

what s the correct syntax

gildor · Answer

``` Provides fun providePresenterFactory interactor DragonInteractor WelcomePresenter return WelcomePresenter interactor ```

efemoney · Answer

point up

alouanemed · Answer

hah convert failed

gildor · Answer

could you please show your original java code

efemoney · Answer

Yeah you should probably report that on YT If it was the converter that did that

alouanemed · Answer

YT

gildor · Answer

YouTrack

efemoney · Answer

YouTrack

gildor · Answer

Please show original code before you filled issue

gildor · Answer

< denis shakinov> Not sure but it been there even before 1 1 For now you should use only kapt3 kapt1 has a lot of problems and known bugs and not supported anymore You need only kotlin kapt plugin

lovis · Answer

exactly what Andrey says kapt3 only and therefore no `generateStubs`

alouanemed · Answer

The lambda is already there confused

gildor · Answer

I see you original code returns PresenterFactory that as I suppose is SAM interface

gildor · Answer

It s not a fail of conversion but yeah this conversion doesn t work properly with Dagger

gildor · Answer

``` Provides fun providePresenterFactory interactor DragonInteractor PresenterFactory lt WelcomeContract Presenter gt return PresenterFactory WelcomePresenter interactor ```

gildor · Answer

< alouanemed> Try this

denis.shakinov · Answer

< gildor> so using kotlin plugin 1 1 4 and having kotlin kapt in my gradle file means that I m already using kapt3 and i can delete generateStubs everywhere

gildor · Answer

< denis shakinov> yes

denis.shakinov · Answer

thank you

alouanemed · Answer

it says PresenterFactory Interface doesn t have constructor

gildor · Answer

< alouanemed> PresenterFactory is Kotlin or Jva interface

alouanemed · Answer

kotlin

alouanemed · Answer

interface PresenterFactory lt T BasePresenter lt gt gt fun create T

gildor · Answer

Oh in this case you cannot use SAM conversion

alouanemed · Answer

why is that

gildor · Answer

< alouanemed> then you need to implement this interface ``` Provides fun providePresenterFactory interactor DragonInteractor PresenterFactory lt WelcomeContract Presenter gt return object PresenterFactory lt WelcomeContract Presenter gt override fun provide WelcomeContract Presenter return WelcomePresenter interactor ```

gildor · Answer

< alouanemed> see

alouanemed · Answer

I see what if I revoked back the Factory interface to java

alouanemed · Answer

the old verison should work right

gildor · Answer

< alouanemed> Yeah this should work But I think there are 3 better options 1 Implement interface as anonymous object looks not so good but works 2 Write some simple wrapper for PresenterFactory to hold lambda 3 Use qulifier annotation on lamda it will allow you to use lambda directly but require refactor all client usages

gildor · Answer

for option 2 ``` class SimplePresenterFactory lt T BasePresenter lt gt gt private val factory gt T PresenterFactory lt T gt override fun create T return factory ``` and then to use it ``` Provides fun providePresenterFactory interactor DragonInteractor PresenterFactory lt WelcomeContract Presenter gt return SimplePresenterFactory WelcomePresenter interactor ```

alouanemed · Answer

Thank you for the detailed answer I opt ed for the first one converting Factory to java that one is fixed but am getting this bunch of errors in all my sub components Component java 5 error incompatible types NonExistentClass cannot be converted to Annotation e e error NonExistentClass e ^

alouanemed · Answer

` ActivityScope Subcomponent modules = arrayOf WelcomeModule class interface WelcomeComponent `

gildor · Answer

Try to clean your project and build again

gildor · Answer

If you still has this problem after clean it means that you have some other problem and should check gradle build logs reason is definitely there