A demonstration about how to inject BindingAdapters with Dagger Hilt.

HiltDataBinding.kt

BindingScoped.kt

@Scope
@Retention(AnnotationRetention.BINARY)
annotation class BindingScoped

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CustomBindingComponent.kt

@BindingScoped
@DefineComponent(parent = ApplicationComponent::class)
interface CustomBindingComponent : DataBindingComponent

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CustomBindingComponentBuilder.kt

@DefineComponent.Builder
interface CustomBindingComponentBuilder {
    fun build(): CustomBindingComponent
}

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CustomBindingEntryPoint.kt

@EntryPoint
@BindingScoped
@InstallIn(CustomBindingComponent::class)
interface CustomBindingEntryPoint {

    @BindingScoped
    fun getImageBindingAdapter(): ImageBindingAdapter
}

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MyApp.kt

@HiltAndroidApp
class MyApp : Application() {

    @Inject
    lateinit var bindingComponentProvider: Provider<CustomBindingComponentBuilder>

    override fun onCreate() {
        super.onCreate()

        DataBindingUtil.setDefaultComponent(bindingComponentProvider.get().build())
    }
}