Creating dependent component in dagger 2 - dagger-2

Question

I have a project with one AppComponent that builds and works. Now I want to add another dependent component to the project.
I add a scope annotation
#Scope
#Retention(AnnotationRetention.RUNTIME)
annotation class MyTestScope
Then I create some class and a module for it
class A {
fun get() = 1
}
#Module
class TestModule {
#Provides
#MyTestScope
fun provideA(): A {
return A()
}
}
After I add the dependent component like this
#MyTestScope
#Component(dependencies = [AppComponent::class],
modules = [TestModule::class])
interface DependentComponent {
#Component.Builder
interface Builder {
#BindsInstance
fun appComponent(component: AppComponent): Builder
fun build(): DependentComponent
}
fun inject(application: Application)
}
If I try to build it I see the next error
error: #Component.Builder is missing setters for required modules or components: [AppComponent]
Here is how my AppComponent looks like
#Singleton
#Component(modules = [
AndroidInjectionModule::class,
ActivityModule::class,
// etc ....
])
interface AppComponent {
#Component.Builder
interface Builder {
#BindsInstance
fun language(language: Language): Builder
#BindsInstance
fun appContext(appContext: Context): Builder
fun build(): AppComponent
}
fun inject(application: Application)
}
Any idea what's wrong?

Answer 1

When you create a builder to your dependent component never mark a setter of your main component with #BindsInstance
#MyTestScope
#Component(dependencies = [AppComponent::class],
modules = [TestModule::class])
interface DependentComponent {
#Component.Builder
interface Builder {
fun appComponent(component: AppComponent): Builder
fun build(): DependentComponent
}
fun inject(application: Application)
}