Wrong error in @Binds attempt

Hello,

I have had a problem that took a while to solve and didn’t know what was the cause of it,

I have a modular Android project and i keep my repository interfaces in a module called database, for example:

interface RecipientRepository

The implementation of this interface is found in two modules called dev and mock.

The mock class looks like this:

@Singleton
class RecipientRepositoryMock @Inject constructor() : RecipientRepository

My android application is using flavors so i have flavors for mock and dev, so i use this in gradle:

    mockImplementation project(":mock")
    devImplementation project(":dev")

    //hardcoded data
    testImplementation project(":mock")

Our server had some problems so i had to switch to mock data on dev flavor, wrote this in my dagger module:

    @Binds
    abstract fun bindRecipientRepository(repository: RecipientRepositoryMock): RecipientRepository

Looks like Android Studio lets me autocomplete RecipientRepositoryMock and brings no error.

All seems fine but when i try to run i get this error:

FlavorDataModule.java:76: error: @Binds methods' parameter type must be assignable to the return type
    public abstract repository.RecipientRepository bindRecipientRepository(@org.jetbrains.annotations.NotNull()

I think binds should first check if the class specified as paramter exists before checking if it extends the return type, I got no clue that the class could not be found because i forgot to add my mock dependency to the application.

This is an error with Android Studio, but it may improve debugging for others.

[bcorso]

I’m going to close this since its been a while without a response. Feel free to still add a repro and I’ll open it back up.

[bcorso]

Hi Rachieru,

Thanks for reporting!

I’ll take a look and see if there’s anything we can do about it.