ViewModelProvider.Factory

interface ViewModelProvider.Factory

Known direct subclasses
AbstractSavedStateViewModelFactory

Skeleton of androidx.lifecycle.ViewModelProvider.KeyedFactory that creates SavedStateHandle for every requested androidx.lifecycle.ViewModel.
SavedStateViewModelFactory

androidx.lifecycle.ViewModelProvider.Factory that can create ViewModels accessing and contributing to a saved state via SavedStateHandle received in a constructor.
ViewModelProvider.NewInstanceFactory

Simple factory, which calls empty constructor on the give class.
Known indirect subclasses

Implementations of Factory interface are responsible to instantiate ViewModels.

Summary

Nested types
ViewModelProvider.Factory.Companion

Public methods
default @NonNull T
<T extends ViewModel> create(@NonNull Class<@NonNull T> modelClass)

Creates a new instance of the given Class.
default @NonNull T
<T extends ViewModel> create(
    @NonNull Class<@NonNull T> modelClass,
    @NonNull CreationExtras extras
)

Creates a new instance of the given Class.

Public methods

create

default @NonNull T <T extends ViewModel> create(@NonNull Class<@NonNull T> modelClass)

Creates a new instance of the given Class.

Default implementation throws UnsupportedOperationException.

Parameters
@NonNull Class<@NonNull T> modelClass

a Class whose instance is requested
Returns
@NonNull T

a newly created ViewModel

create

default @NonNull T <T extends ViewModel> create(
    @NonNull Class<@NonNull T> modelClass,
    @NonNull CreationExtras extras
)

Creates a new instance of the given Class.

Parameters
@NonNull Class<@NonNull T> modelClass

a Class whose instance is requested
@NonNull CreationExtras extras

an additional information for this creation request
Returns
@NonNull T

a newly created ViewModel