Hilt Android ViewModel 没有零参数构造函数

如何解决Hilt Android ViewModel 没有零参数构造函数

我用 Hilt 构造了一个 viewmodel：

@Hiltviewmodel
class Registerviewmodel @Inject constructor(
    private val savedStateHandle: SavedStateHandle,private val networkClient: NetworkClient
) : viewmodel() {}

但是当我运行应用程序时，它给了我一个错误：

java.lang.RuntimeException: Cannot create an instance of class com.package_name.Registerviewmodel
        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 path_of_project.register.RegisterFragment.getRegisterviewmodel(UnkNown Source:2)
        at path_of_project.ui.auth.register.RegisterFragment.onViewCreated(RegisterFragment.kt:53)
        at androidx.fragment.app.Fragment.performViewCreated(Fragment.java:2974)
        at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:543)
        at androidx.fragment.app.FragmentStateManager.movetoExpectedState(FragmentStateManager.java:282)
        at androidx.fragment.app.FragmentStore.movetoExpectedState(FragmentStore.java:112)

一切看起来都很好。甚至设置：

    implementation "com.google.dagger:hilt-android:$hilt_version"
    kapt "com.google.dagger:hilt-compiler:$hilt_version"

我做错了什么？

解决方法

在这种情况下。确保不要忘记用 Fragment 注释 Activity 或 @AndroidEntryPoint：

@AndroidEntryPoint
class RegisterFragment : Fragment(R.layout.fragment_register) {}

如果不是这种情况，请参阅 here。