Dagger-Hilt @AndroidEntryPoint不与BottomSheetDialogFragment()一

Question

我使用ViewModel内的BottomSheetDialogFragmet()，所以我必须标记我的BottomSheet与@AndroidEntryPoint。

@AndroidEntryPoint
class SearchAddressDialog : BottomSheetDialogFragment() {
private val viewModel: MyAddressesViewModel by viewModels()

......
}

但是当我试图构建我的项目时，它给了我这个错误:

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.

下面是使用——stacktrace运行时的输出

https://gist.github.com/javlonrahimov/95de968645cace1dfb6e425381f8014b

如果我删除@AndroidEntryPoint上面我的BottomSheetFragmen()它正在构建和安装应用程序。但是当我试图打开的底部表应用程序崩溃，因为我注入我的存储库到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$5.run(FragmentManager.java:524)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:246)
at android.app.ActivityThread.main(ActivityThread.java:8528)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$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$5.run(FragmentManager.java:524) 
at android.os.Handler.handleCallback(Handler.java:938) 
at android.os.Handler.dispatchMessage(Handler.java:99) 
at android.os.Looper.loop(Looper.java:246) 
at android.app.ActivityThread.main(ActivityThread.java:8528) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130) 

@AndroidEntryPoint工作没有错误在其他普通碎片。

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()，它在构建时给我错误。

如果我改变这个

@AndroidEntryPoint
class SearchAddressDialog : BottomSheetDialogFragment(){

@AndroidEntryPoint
class SearchAddressDialog : Fragment() {

它工作得很好。

我实际上可以注释BottomSheetDialogFragment()与@AndroidEntryPoint?

更新3:

这是我的BottomSheetDialogFragment

Answer 1

经过长时间的研究，我无法解决@AndroidEntryPoint问题。我已经想出了这个:我只是把我的ViewModel传递给我的BottomSheetDialogFragment的构造函数:

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

我这样打开我的对话框:

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

我已经使用了当前片段的ViewModel。

Answer 2

您是否在
AddressRepository和GeocoderRepository类构造函数上添加了@Inject注释?也许您忘记注释ViewModel类的依赖对象的构造函数。

如果是这种情况，用@Inject注释所有依赖的类构造函数，问题将得到解决。

Answer 3

首先，我希望你在你的项目中添加了hilt-android-gradle-plugin。

其次，很久以前在dagger-hilt中有一个关于这个继承依赖的问题，但在2.28之后已经修复了。你可以在这个链接中看到更多细节。https://github.com/google/dagger/issues/1910

所以，对于你的情况下，没有添加@AndroidEntryPoint到BottomSheetDialogFragment应该工作，但你也尝试添加这个吗?事情是这样的吗?

另外，你能分享你的BottomSheetDialogFragment类吗?

Answer 4

@AndroidEntryPoint & @HiltViewModel

作品完美!

这是我底单片段和视图模型。

@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() {}
}

，最后从另一个片段打开，像这样:

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

注意:使用短号&刀柄版本2.41

希望这对你有帮助!编码快乐! !