Dagger-Hilt @AndroidEntryPoint 不适用于 BottomSheetDialogFragment()

Question

我在 BottomSheetDialogFragmet() 中使用 ViewModel，所以我必须用 @AndroidEntryPoint 标记我的 BottomSheet。

@AndroidEntryPoint
class SearchAddressDialog : BottomSheetDialogFragment() {

    private val viewModel: MyAddressesViewModel by viewModels()
    
    ......
}

但是当我尝试构建我的项目时，出现了这个错误：

Execution failed for task ':app:kaptDebugKotlin'.
> A failure occurred while executing 
org.jetbrains.kotlin.gradle.internal.KaptWithoutKotlincTask$KaptExecutionWorkAction
> java.lang.reflect.InvocationTargetException (no error message)

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option 
to get more log output. Run with --scan to get full insights.

这是我使用 --stacktrace

对运行的输出
https://gist.github.com/javlonrahimov/95de968645cace1dfb6e425381f8014b

如果我删除 BottomSheetFragmen() 上方的 @AndroidEntryPoint，它正在构建和安装应用程序。但是当我尝试打开 bottomSheet 时，应用程序崩溃了，因为我将我的存储库注入了 ViewModel:

java.lang.RuntimeException: Cannot create an instance of class uz.unical.other.ui.my_addresses.view_model.MyAddressesViewModel at androidx.lifecycle.ViewModelProvider$NewInstanceFactory.create(ViewModelProvider.java:221) at androidx.lifecycle.ViewModelProvider$AndroidViewModelFactory.create(ViewModelProvider.java:278) at androidx.lifecycle.SavedStateViewModelFactory.create(SavedStateViewModelFactory.java:112) at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.java:185) at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.java:150) at androidx.lifecycle.ViewModelLazy.getValue(ViewModelProvider.kt:54) at androidx.lifecycle.ViewModelLazy.getValue(ViewModelProvider.kt:41) at uz.unical.other.ui.my_addresses.dialogs.SearchAddressDialog.getViewModel(SearchAddressDialog.kt:26) at uz.unical.other.ui.my_addresses.dialogs.SearchAddressDialog.onResume(SearchAddressDialog.kt:86) at androidx.fragment.app.Fragment.performResume(Fragment.java:3039) at androidx.fragment.app.FragmentStateManager.resume(FragmentStateManager.java:607) at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:306) at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2189) at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2100) at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2002) at androidx.fragment.app.FragmentManager.run(FragmentManager.java:524) at android.os.Handler.handleCallback(Handler.java:938) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:246) at android.app.ActivityThread.main(ActivityThread.java:8528) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130) Caused by: java.lang.InstantiationException: java.lang.Class<uz.unical.other.ui.my_addresses.view_model.MyAddressesViewModel> has no zero argument constructor at java.lang.Class.newInstance(Native Method) at androidx.lifecycle.ViewModelProvider$NewInstanceFactory.create(ViewModelProvider.java:219) at androidx.lifecycle.ViewModelProvider$AndroidViewModelFactory.create(ViewModelProvider.java:278) at androidx.lifecycle.SavedStateViewModelFactory.create(SavedStateViewModelFactory.java:112) at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.java:185) at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.java:150) at androidx.lifecycle.ViewModelLazy.getValue(ViewModelProvider.kt:54) at androidx.lifecycle.ViewModelLazy.getValue(ViewModelProvider.kt:41) at uz.unical.other.ui.my_addresses.dialogs.SearchAddressDialog.getViewModel(SearchAddressDialog.kt:26) at uz.unical.other.ui.my_addresses.dialogs.SearchAddressDialog.onResume(SearchAddressDialog.kt:86) at androidx.fragment.app.Fragment.performResume(Fragment.java:3039) at androidx.fragment.app.FragmentStateManager.resume(FragmentStateManager.java:607) at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:306) at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2189) at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2100) at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2002) at androidx.fragment.app.FragmentManager.run(FragmentManager.java:524) at android.os.Handler.handleCallback(Handler.java:938) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:246) at android.app.ActivityThread.main(ActivityThread.java:8528) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)

@AndroidEntryPoint 在其他普通 Fragments 上正常工作。

更新：

这是我的视图模型：

@HiltViewModel class MyAddressesViewModel @Inject constructor( private val repository: AddressRepository, private val geocoderRepository: GeocoderRepository ) : ViewModel() {}

更新 2：现在我正在注释 BottomSheetDialogFragment() 并且它在构建时给我错误。

如果我改变这个

@AndroidEntryPoint class SearchAddressDialog : BottomSheetDialogFragment(){

至此

@AndroidEntryPoint class SearchAddressDialog : Fragment() {

它工作得很好。

我真的可以用@AndroidEntryPoint 注释 BottomSheetDialogFragment() 吗？

更新 3：

Here is my BottomSheetDialogFragment

Answer 1

您是否在
上添加了 @Inject 注释 AddressRepository 和 GeocoderRepository class 是构造函数？也许你忘记注释你的 ViewModel class 的依赖对象的构造函数。因此 Hilt/Dagger 无法解析依赖关系树。

如果是这种情况，请用 @Inject 注释所有依赖的 class 构造函数，问题将得到解决。

Answer 2

来自文档：

Hilt only supports fragments that extend androidx.Fragment.

Answer 3

首先，希望您在项目中添加了hilt-android-gradle-plugin。

其次，dagger-hilt 很久以前就存在一个关于这种继承依赖的问题，但自 2.28 以来它已经被修复。您可以在此 link 中查看更多详细信息。 https://github.com/google/dagger/issues/1910

因此，对于您的情况，不将 @AndroidEntryPoint 添加到 BottomSheetDialogFragment 应该可行，但您是否也尝试过添加这个？它是这样工作的吗？

此外，能否请您分享您的 BottomSheetDialogFragment class？

Answer 4

经过长时间的研究，我无法解决@AndroidEntryPoint 问题。我想出了这个：我只是将我的 ViewModel 传递给它的构造函数上的 BottomSheetDialogFragment：

class SearchAddressDialog(
    private val viewModel: MyAddressesViewModel
) : BottomSheetDialogFragment() {
    ........ 
}

我这样打开对话框：

val dialog = SearchAddressDialog(viewModel)
dialog.show(childFragmentManager, SearchAddressDialog.TAG)

我已经使用了当前片段的ViewModel。

Answer 5

@AndroidEntryPoint & @HiltViewModel

完美运行！

这是我的底部 sheet 片段和视图模型。

@AndroidEntryPoint
class BottomSheetFragment : BottomSheetDialogFragment() {
    companion object {
        const val TAG = "BottomSheetFragment"
    }

    private val viewModel by viewModels<BottomSheetFragmentViewModel>()
    private var _binding: BottomSheetFragmentBinding? = null
    private val binding get() = _binding!!

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?,): View {
        _binding = BottomSheetFragmentBinding.inflate(inflater, container, false)
        return binding.root
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        viewModel.test()
    }
}

@HiltViewModel
class BottomSheetFragmentViewModel @Inject constructor(
    private val localData: LocalRepository,
    private val remoteData: RemoteRepository,
) : BaseViewModel() {

    fun test() {}
}

最后像这样从另一个片段打开它：

BottomSheetFragment().show(childFragmentManager, BottomSheetFragment.TAG);

注意：使用匕首和刀柄版本 2.41

希望这对您有所帮助！编码愉快！！

Dagger-Hilt @AndroidEntryPoint 不适用于 BottomSheetDialogFragment()

Dagger-Hilt @AndroidEntryPoint is not working with BottomSheetDialogFragment()

android

gradle

dagger-hilt

bottomsheetdialogfragment