hilt viewmodel An error occurred during injection with parameters
zzw8421 opened this issue · 1 comments
language：kotlin
For ease of use, I used the following code in the base class of the activity to initialize the viewmodel
mViewModel = ViewModelProvider(
this,
ViewModelProvider.AndroidViewModelFactory.getInstance(application)
).get(persistentClass)
viewmodel code:
@HiltViewModel
class ListViewModel @Inject constructor( val testDao: TestModelDao) : BaseViewModel() {}
error:
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ly.example/com.ly.example.ui.list.ListActivity}: java.lang.RuntimeException: Cannot create an instance of class com.ly.example.ui.list.ListViewModel
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2668)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2729)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1480)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6176)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:893)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:783)
Caused by: java.lang.RuntimeException: Cannot create an instance of class com.ly.example.ui.list.ListViewModel
at androidx.lifecycle.viewmodel.internal.JvmViewModelProviders.createViewModel(JvmViewModelProviders.kt:40)
at androidx.lifecycle.ViewModelProvider$NewInstanceFactory.create(ViewModelProvider.android.kt:193)
at androidx.lifecycle.ViewModelProvider$AndroidViewModelFactory.create(ViewModelProvider.android.kt:317)
at androidx.lifecycle.ViewModelProvider$AndroidViewModelFactory.create(ViewModelProvider.android.kt:299)
at androidx.lifecycle.ViewModelProvider$AndroidViewModelFactory.create(ViewModelProvider.android.kt:273)
at androidx.lifecycle.ViewModelProvider$NewInstanceFactory.create(ViewModelProvider.android.kt:203)
at androidx.lifecycle.viewmodel.ViewModelProviderImpl_androidKt.createViewModel(ViewModelProviderImpl.android.kt:34)
at androidx.lifecycle.viewmodel.ViewModelProviderImpl.getViewModel$lifecycle_viewmodel_release(ViewModelProviderImpl.kt:65)
at androidx.lifecycle.viewmodel.ViewModelProviderImpl.getViewModel$lifecycle_viewmodel_release$default(ViewModelProviderImpl.kt:47)
at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.android.kt:91)
at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.android.kt:109)
at com.ly.platform.base.BaseVMActivity.onCreate(BaseVMActivity.kt:55)
at com.ly.example.ui.list.Hilt_ListActivity.onCreate(Hilt_ListActivity.java:60)
at android.app.Activity.performCreate(Activity.java:6692)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2621)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2729)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1480)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6176)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:893)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:783)
Caused by: java.lang.NoSuchMethodException: []
at java.lang.Class.getConstructor0(Class.java:2204)
at java.lang.Class.getDeclaredConstructor(Class.java:2050)
at androidx.lifecycle.viewmodel.internal.JvmViewModelProviders.createViewModel(JvmViewModelProviders.kt:38)
at androidx.lifecycle.ViewModelProvider$NewInstanceFactory.create(ViewModelProvider.android.kt:193)
at androidx.lifecycle.ViewModelProvider$AndroidViewModelFactory.create(ViewModelProvider.android.kt:317)
at androidx.lifecycle.ViewModelProvider$AndroidViewModelFactory.create(ViewModelProvider.android.kt:299)
at androidx.lifecycle.ViewModelProvider$AndroidViewModelFactory.create(ViewModelProvider.android.kt:273)
at androidx.lifecycle.ViewModelProvider$NewInstanceFactory.create(ViewModelProvider.android.kt:203)
at androidx.lifecycle.viewmodel.ViewModelProviderImpl_androidKt.createViewModel(ViewModelProviderImpl.android.kt:34)
at androidx.lifecycle.viewmodel.ViewModelProviderImpl.getViewModel$lifecycle_viewmodel_release(ViewModelProviderImpl.kt:65)
at androidx.lifecycle.viewmodel.ViewModelProviderImpl.getViewModel$lifecycle_viewmodel_release$default(ViewModelProviderImpl.kt:47)
at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.android.kt:91)
at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.android.kt:109)
at com.ly.platform.base.BaseVMActivity.onCreate(BaseVMActivity.kt:55)
at com.ly.example.ui.list.Hilt_ListActivity.onCreate(Hilt_ListActivity.java:60)
at android.app.Activity.performCreate(Activity.java:6692)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2621)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2729)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1480)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6176)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:893)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:783)
This code works fine when the constructor has no arguments
However, when a constructor with arguments is used, an error message is displayed indicating that the viewmodels failed to build
Using by viewmodels is no problem
Hi, @zzw8421 , Hilt needs to use its own HiltViewModelFactory to inject a HiltViewModel. You can try removing ViewModelProvider.AndroidViewModelFactory.getInstance(application) argument from your ViewModelProvider() call.