Android Dagger - Hilt ViewModel 无法检测依赖项

Question

我在运行应用程序时遇到运行时问题。我是匕首和刀柄的新手。请帮我解决这个问题。构建问题：

error: [Dagger/DependencyCycle] Found a dependency cycle:
  public abstract static class SingletonC implements AppController_GeneratedInjector,
                         ^
      com.hilt.hiltsampleproject.app.ApiHelper is injected at
          com.hilt.hiltsampleproject.app.ApiHelperImpl(apiHelper)
      com.hilt.hiltsampleproject.app.ApiHelperImpl is injected at
          com.hilt.hiltsampleproject.app.AppModule.provideApiHelper(apiHelper)
      com.hilt.hiltsampleproject.app.ApiHelper is injected at
          com.hilt.hiltsampleproject.repositories.MainRepository(apiHelper)
      com.hilt.hiltsampleproject.repositories.MainRepository is injected at
          com.hilt.hiltsampleproject.ui.posts.PostViewModel(mainRepository)
      javax.inject.Provider<com.hilt.hiltsampleproject.ui.posts.PostViewModel> is injected at
          com.hilt.hiltsampleproject.app.ViewModelByDaggerFactory(viewModelProvider)
      com.hilt.hiltsampleproject.app.ViewModelByDaggerFactory<com.hilt.hiltsampleproject.ui.posts.PostViewModel> is injected at
          com.hilt.hiltsampleproject.ui.posts.PostFragment.viewModelFactory
      com.hilt.hiltsampleproject.ui.posts.PostFragment is injected at
          com.hilt.hiltsampleproject.ui.posts.PostFragment_GeneratedInjector.injectPostFragment(com.hilt.hiltsampleproject.ui.posts.PostFragment) [com.hilt.hiltsampleproject.app.AppController_HiltComponents.SingletonC ? com.hilt.hiltsampleproject.app.AppController_HiltComponents.ActivityRetainedC ? com.hilt.hiltsampleproject.app.AppController_HiltComponents.ActivityC ? com.hilt.hiltsampleproject.app.AppController_HiltComponents.FragmentC]

Gradle 依赖关系：

implementation 'com.google.dagger:hilt-android:2.33-beta'
kapt 'com.google.dagger:hilt-compiler:2.33-beta'

// Hilt Jetpack Integrations
implementation 'androidx.hilt:hilt-lifecycle-viewmodel:1.0.0-alpha03'
annotationProcessor 'androidx.hilt:hilt-compiler:1.0.0-beta01'

后片段：

private val postViewModel: PostViewModel by viewModels()

后视图模型：

@HiltViewModel class PostViewModel @Inject constructor(private val mainRepository: MainRepository) : ViewModel()

主存储库：

class MainRepository @Inject constructor(
private val apiHelper: ApiHelper)

ApiHelper:

interface ApiHelper {
suspend fun getPosts(): Response<Posts>}

Answer 1

我查看了 github 示例。

问题是您有一个 DependencyCycle：

class ApiHelperImpl @Inject constructor(
    private val apiHelper: ApiHelper
) : ApiHelper {
...
}

您正在尝试 Construct/Provide 一个 ApiHelper 的实例，它也采用 ApiHelper 的一个实例，因此，要构造第一个 ApiHelper，Hilt/Dagger 必须构造依赖关系，所以这个 ApiHelperImpl 需要一个 ApiHelper...它需要一个 ApiHelper...它需要一个 ApiHelper...你希望得到这个想法:)

Android Dagger - Hilt ViewModel 无法检测依赖项

Android Dagger - Hilt ViewModel can't detect dependency

android

kotlin

dagger-hilt