我有一个枚举列表,我需要通过构造函数注入它以查看模型,但 dagger 因此错误而失败
SelectDisabilityComponent.java:7: error: [Dagger/MissingBinding] java.util.List<? extends x.x.results.Disability> cannot be provided without an @Provides-annotated method.
这是模块
@Module
abstract class SelectDisabilityModule {
@Binds
abstract fun bindViewModelFactory(impl: SelectDisabilityViewModel.Factory): ViewModelProvider.Factory
@Module
companion object {
@JvmStatic
@Provides
fun provideViewModel(fragment: SelectDisabilityFragment, factory: ViewModelProvider.Factory): SelectDisabilityViewModel {
return ViewModelProvider(fragment, factory).get(SelectDisabilityViewModel::class.java)
}
@JvmStatic
@Provides
fun provideDisabilities(fragment: SelectDisabilityFragment) : List<Disability>? {
return fragment.arguments?.getParcelable<DisabilityData>(SelectDisabilityFragment.DISABILITY_DATA)?.disabilities
}
}
}
这是枚举
enum class Disability(val value: String) {
HEARING("hearing"), VISUAL("visual")
}
答案 0 :(得分:0)
错误消息提到了通配符 ? extends x.x.results.Disability
。您可能需要使用 @JvmSuppressWildcards
注释。
试试fun provideDisabilities(fragment: SelectDisabilityFragment) : List<@JvmSuppressWildcards Disability>
。
顺便说一下,我认为较新版本的 Dagger 不需要 @JvmStatic
。