android - @dagger.hilt.android.qualifiers.ApplicationContext android.content.Context 不能在没有@Provides-annotated 方法的情况下提供

Question

我正在做一个相对论简单的 Hilt 实现。我已经设置好了，我似乎无法解决这个错误:
[Dagger/MissingBinding] @dagger.hilt.android.qualifiers.ApplicationContext android.content.Context 不能在没有@Provides-annotated 方法的情况下提供。

@dagger.hilt.android.qualifiers.ApplicationContext android.content.Context is injected at
      com.greendotcorp.core.managers.featurecontrol.app.FeatureControlManager(context, …)
  com.greendotcorp.core.managers.featurecontrol.app.FeatureControlManager is injected at
      com.greendotcorp.core.features.dashboard.GridDashboardFragment.featureControlManager
  com.greendotcorp.core.features.dashboard.GridDashboardFragment is injected at
      
  com.greendotcorp.core.utils_theme.ViewModelDependencyInjector.inject

这是我的代码:

@Singleton
@Component(modules = [ViewModelInjectorModule::class])
interface ViewModelDependencyInjector {
    fun inject(fragment: GridDashboardFragment)
}

@InstallIn(FragmentComponent::class)
@Module
object DashboardModule {

@Provides
@Singleton
fun provideFeatureComponentManager(@ApplicationContext context: Context) : FeatureControlManager {
    return FeatureControlManager.getInstance(context)
}

@AndroidEntryPoint
class GridDashboardFragment : BaseDetailFragment() {

   @Inject lateinit var featureControlManager: FeatureControlManager
}

我是 Hilt 的新手——有什么想法吗？

Answer 1

我认为问题正在发生，因为在 InstallIn() 中，您正在传递一个 fragment 组件，并且您正在使用 singleton 注释您的依赖项，据我所知，可以将单例应用于 ApplicationComponent ，因此请尝试将 @Singleton 注释更改为 @FragmentScoped Annotation

@Provides  
@Singleton --> to @FragmentScoped
fun provideFeatureComponentManager(@ApplicationContext context: Context) : FeatureControlManager {
    return FeatureControlManager.getInstance(context)
}