由于Hilt错误，应用程序未初始化

Question

我正在尝试启动一个小项目，遵循干净的体系结构、MVVM并使用改装、协同程序等等。我使用Hilt进行DI，并遵循了我在文档和其他项目中看到的内容。

如果我用@AndroidEntryPoint注释我的"活动"或"片段"，或者用@HiltAndroidApp注释应用程序，应用程序甚至无法启动。堆栈跟踪对我来说没什么意义，但也许我跳过了什么。如果我不注释类，应用程序会尝试启动，但由于它无法从任何地方注入ViewModel，因此它显然会崩溃。

Cause: com.example.searchspotify.presentation.view.activity.Hilt_MainActivity
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:transformClassesWithAndroidEntryPointTransformForDebug'.
> javassist.NotFoundException: com.example.searchspotify.presentation.view.activity.Hilt_MainActivity
* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:transformClassesWithAndroidEntryPointTransformForDebug'.
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.lambda$executeIfValid$1(ExecuteActionsTaskExecuter.java:205)
at org.gradle.internal.Try$Failure.ifSuccessfulOrElse(Try.java:263)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid(ExecuteActionsTaskExecuter.java:203)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:184)
at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:109)
at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:46)
at org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute(ResolveTaskExecutionModeExecuter.java:62)
at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:57)
at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:56)
at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.executeTask(EventFiringTaskExecuter.java:77)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:55)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:52)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:416)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:406)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:165)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:250)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:158)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:102)
at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:52)
at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:41)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:372)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:359)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:352)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:338)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.lambda$run$0(DefaultPlanExecutor.java:127)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:191)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.executeNextNode(DefaultPlanExecutor.java:182)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:124)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
Caused by: java.lang.RuntimeException: javassist.NotFoundException: com.example.searchspotify.Hilt_SearchSpotifyApp
at com.android.builder.profile.Recorder$Block.handleException(Recorder.java:55)
at com.android.builder.profile.ThreadRecorder.record(ThreadRecorder.java:108)
at com.android.build.gradle.internal.pipeline.TransformTask.transform(TransformTask.java:242)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:104)
at org.gradle.api.internal.project.taskfactory.IncrementalTaskInputsTaskAction.doExecute(IncrementalTaskInputsTaskAction.java:47)
at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:42)
at org.gradle.api.internal.project.taskfactory.AbstractIncrementalTaskAction.execute(AbstractIncrementalTaskAction.java:25)
at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:28)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$3.run(ExecuteActionsTaskExecuter.java:568)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:402)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:394)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:165)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:250)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:158)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:92)
at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:553)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:536)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.access$300(ExecuteActionsTaskExecuter.java:109)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$TaskExecution.executeWithPreviousOutputFiles(ExecuteActionsTaskExecuter.java:276)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$TaskExecution.execute(ExecuteActionsTaskExecuter.java:265)
at org.gradle.internal.execution.steps.ExecuteStep.lambda$execute$0(ExecuteStep.java:32)
at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:32)
at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:26)
at org.gradle.internal.execution.steps.CleanupOutputsStep.execute(CleanupOutputsStep.java:63)
at org.gradle.internal.execution.steps.CleanupOutputsStep.execute(CleanupOutputsStep.java:35)
at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:49)
at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:34)
at org.gradle.internal.execution.steps.CancelExecutionStep.execute(CancelExecutionStep.java:43)
at org.gradle.internal.execution.steps.TimeoutStep.executeWithoutTimeout(TimeoutStep.java:73)
at org.gradle.internal.execution.steps.TimeoutStep.execute(TimeoutStep.java:54)
at org.gradle.internal.execution.steps.CatchExceptionStep.execute(CatchExceptionStep.java:34)
at org.gradle.internal.execution.steps.CreateOutputsStep.execute(CreateOutputsStep.java:44)
at org.gradle.internal.execution.steps.SnapshotOutputsStep.execute(SnapshotOutputsStep.java:54)
at org.gradle.internal.execution.steps.SnapshotOutputsStep.execute(SnapshotOutputsStep.java:38)
at org.gradle.internal.execution.steps.BroadcastChangingOutputsStep.execute(BroadcastChangingOutputsStep.java:49)
at org.gradle.internal.execution.steps.CacheStep.executeWithoutCache(CacheStep.java:153)
at org.gradle.internal.execution.steps.CacheStep.execute(CacheStep.java:67)
at org.gradle.internal.execution.steps.CacheStep.execute(CacheStep.java:41)
at org.gradle.internal.execution.steps.StoreExecutionStateStep.execute(StoreExecutionStateStep.java:44)
at org.gradle.internal.execution.steps.StoreExecutionStateStep.execute(StoreExecutionStateStep.java:33)
at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:38)
at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:24)
at org.gradle.internal.execution.steps.SkipUpToDateStep.executeBecause(SkipUpToDateStep.java:92)
at org.gradle.internal.execution.steps.SkipUpToDateStep.lambda$execute$0(SkipUpToDateStep.java:85)
at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:55)
at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:39)
at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:76)
at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:37)
at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:36)
at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:26)
at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:94)
at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:49)
at org.gradle.internal.execution.steps.CaptureStateBeforeExecutionStep.execute(CaptureStateBeforeExecutionStep.java:79)
at org.gradle.internal.execution.steps.CaptureStateBeforeExecutionStep.execute(CaptureStateBeforeExecutionStep.java:53)
at org.gradle.internal.execution.steps.ValidateStep.execute(ValidateStep.java:74)
at org.gradle.internal.execution.steps.SkipEmptyWorkStep.lambda$execute$2(SkipEmptyWorkStep.java:78)
at org.gradle.internal.execution.steps.SkipEmptyWorkStep.execute(SkipEmptyWorkStep.java:78)
at org.gradle.internal.execution.steps.SkipEmptyWorkStep.execute(SkipEmptyWorkStep.java:34)
at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsStartedStep.execute(MarkSnapshottingInputsStartedStep.java:39)
at org.gradle.internal.execution.steps.LoadExecutionStateStep.execute(LoadExecutionStateStep.java:40)
at org.gradle.internal.execution.steps.LoadExecutionStateStep.execute(LoadExecutionStateStep.java:28)
at org.gradle.internal.execution.impl.DefaultWorkExecutor.execute(DefaultWorkExecutor.java:33)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid(ExecuteActionsTaskExecuter.java:192)
... 30 more
Caused by: javassist.NotFoundException: com.example.searchspotify.Hilt_SearchSpotifyApp
at javassist.ClassPool.get(ClassPool.java:430)
at dagger.hilt.android.plugin.AndroidEntryPointClassTransformer.transformClass(AndroidEntryPointClassTransformer.kt:126)
at dagger.hilt.android.plugin.AndroidEntryPointClassTransformer.transformClassToOutput(AndroidEntryPointClassTransformer.kt:105)
at dagger.hilt.android.plugin.AndroidEntryPointClassTransformer.transformFile(AndroidEntryPointClassTransformer.kt:101)
at dagger.hilt.android.plugin.AndroidEntryPointTransform.transformFile(AndroidEntryPointTransform.kt:156)
at dagger.hilt.android.plugin.AndroidEntryPointTransform.transform(AndroidEntryPointTransform.kt:124)
at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:284)
at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:247)
at com.android.builder.profile.ThreadRecorder.record(ThreadRecorder.java:106)
... 92 more

我将在这里留下我的部分代码，如果我应该提供其他内容，请告诉我，到目前为止，这是非常基本的。

应用程序

@HiltAndroidApp
class SearchSpotifyApp: Application(){
}

活动

@AndroidEntryPoint
class MainActivity: AppCompatActivity(){
private var binding: ActivityMainBinding? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = DataBindingUtil.setContentView(
this,
R.layout.activity_main
)
}
override fun onDestroy() {
binding = null
super.onDestroy()
}
}

碎片

@AndroidEntryPoint
class SearchFragment : Fragment() {
private lateinit var binding: FragmentSearchBinding
private val searchViewModel: SearchViewModel by viewModels()
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
binding = FragmentSearchBinding.inflate(inflater)
return binding.root
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
initViews()
}
private fun initViews() {
searchViewModel.getSongs().observe(viewLifecycleOwner, {
binding.text.text = it.first().title
})
}
}

模块

private const val BASE_URL = "http://google.es"
@Module
@InstallIn(ApplicationComponent::class)
object AppModule {
@Singleton
@Provides
fun provideRetrofit(gson: Gson): Retrofit = Retrofit.Builder()
.baseUrl(BASE_URL)
.addConverterFactory(GsonConverterFactory.create(gson))
.build()
@Provides
fun provideGson(): Gson = GsonBuilder().create()
@Provides
fun provideSearchDataSource(retrofit: Retrofit): SearchDataSource =
retrofit.create(SearchDataSource::class.java)
@Singleton
@Provides
fun provideSearchRepository(searchDataSource: SearchDataSource) =
SearchRepositoryImpl(searchDataSource)
@Provides
fun provideSearchViewModel(repository: SearchRepository) =
SearchViewModel(repository)
}

我很确定我错过了一些我没有看到的非常基本的东西，因为我不熟悉DI框架的设置。提前非常感谢。

更新：添加清单以防万一。清单

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.searchspotify">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:name=".SearchSpotifyApp"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:screenOrientation="portrait"
android:name=".presentation.view.activity.MainActivity"
android:theme="@style/AppTheme">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

Answer 1

在我的情况下，我忘记了我正在使用Kotlin，而使用了annotationProcessor。我换回了kapt，没有更多的错误。

Answer 2

将其添加到下面的AndroidManifest.xml文件中

<application    
android:name=".SearchSpotifyApp"
</application>

Answer 3

这是代码中的错误。

@Provides
fun provideSearchViewModel(repository: SearchRepository) = SearchViewModel(repository)

要注入ViewModel，必须使用androidx.hilt.lifecycle.ViewModelInject包中的@ViewModelInject注释。所以你的viewModel代码应该看起来像这个

import androidx.hilt.lifecycle.ViewModelInject
class SearchViewModel @ViewModelInject constructor(
private val searchRepo: SearchRepository
) : ViewModel() {
}

你可以在这里找到文档，这是我创建的一个例子。