ViewModelProvider.Factory

Added in 2.0.0

Kotlin |Java

Known direct subclasses

`AbstractSavedStateViewModelFactory`	This class is deprecated. Use `viewModelFactory` or implement `ViewModelProvider.Factory`, combined with `CreationExtras.createSavedStateHandle()`.
`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

ViewModelProvider.AndroidViewModelFactory

Factory which may create AndroidViewModel and ViewModel, which have an empty constructor.

ViewModelProviders.DefaultFactory

This class is deprecated.

Use ViewModelProvider.AndroidViewModelFactory

Implementations of Factory interface are responsible to instantiate ViewModels.

Summary

Public companion functions
`ViewModelProvider.Factory`	`from(vararg initializers: ViewModelInitializer<*>)` Creates an `InitializerViewModelFactory` using the given initializers.	android

Public functions
`open T`	`<T : ViewModel> create(modelClass: Class<T>)` Creates a new instance of the given `Class`.	android
`open T`	`<T : ViewModel> create(modelClass: Class<T>, extras: CreationExtras)` Creates a new instance of the given `Class`.	android
`T`	`<T : ViewModel> create(modelClass: KClass<T>, extras: CreationExtras)` Creates a new instance of the given `Class`.	Cmn android N

android

Added in 2.5.0

fun from(vararg initializers: ViewModelInitializer<*>): ViewModelProvider.Factory

Creates an InitializerViewModelFactory using the given initializers.

Parameters
`vararg initializers: ViewModelInitializer<*>`	the class initializer pairs used for the factory to create simple view models

See also
`InitializerViewModelFactory`

android

Added in 2.0.0

open fun <T : ViewModel> create(modelClass: Class<T>): T

Creates a new instance of the given Class.

Default implementation throws UnsupportedOperationException. ˆ

Parameters
`modelClass: Class<T>`	a `Class` whose instance is requested

Returns
`T`	a newly created ViewModel

android

Added in 2.5.0

open fun <T : ViewModel> create(modelClass: Class<T>, extras: CreationExtras): T

Creates a new instance of the given Class.

Parameters
`modelClass: Class<T>`	a `Class` whose instance is requested
`extras: CreationExtras`	an additional information for this creation request

Returns
`T`	a newly created ViewModel

Cmn android N

Added in 2.8.0

fun <T : ViewModel> create(modelClass: KClass<T>, extras: CreationExtras): T

Creates a new instance of the given Class.

Parameters
`modelClass: KClass<T>`	a `KClass` whose instance is requested
`extras: CreationExtras`	an additional information for this creation request

Returns
`T`	a newly created `ViewModel`