ViewModelProviders

Kotlin |Java

open class ViewModelProviders

kotlin.Any
↳	androidx.lifecycle.ViewModelProviders

Utilities methods for ViewModelStore class.

Summary

Nested classes
open	DefaultFactory Factory which may create AndroidViewModel and ViewModel, which have an empty constructor.

Public constructors
<init>()

Public methods
open static ViewModelProvider	of(@NonNull fragment: Fragment) Creates a ViewModelProvider, which retains ViewModels while a scope of given fragment is alive.
open static ViewModelProvider	of(@NonNull activity: FragmentActivity) Creates a ViewModelProvider, which retains ViewModels while a scope of given Activity is alive.
open static ViewModelProvider	of(@NonNull fragment: Fragment, @Nullable factory: ViewModelProvider.Factory?) Creates a ViewModelProvider, which retains ViewModels while a scope of given fragment is alive.
open static ViewModelProvider	of(@NonNull activity: FragmentActivity, @Nullable factory: ViewModelProvider.Factory?) Creates a ViewModelProvider, which retains ViewModels while a scope of given Activity is alive.

Public constructors

<init>

ViewModelProviders()

Deprecated: This class should not be directly instantiated

Public methods

of

@NonNull @MainThread open static fun of(@NonNull fragment: Fragment): ViewModelProvider

Deprecated: Use the 'by viewModels()' Kotlin property delegate or ViewModelProvider#ViewModelProvider(ViewModelStoreOwner), passing in the fragment.

Creates a ViewModelProvider, which retains ViewModels while a scope of given fragment is alive. More detailed explanation is in ViewModel.

It uses the default factory to instantiate new ViewModels.

Parameters
fragment	Fragment: a fragment, in whose scope ViewModels should be retained

Return
ViewModelProvider	a ViewModelProvider instance

of

@NonNull @MainThread open static fun of(@NonNull activity: FragmentActivity): ViewModelProvider

Deprecated: Use the 'by viewModels()' Kotlin property delegate or ViewModelProvider#ViewModelProvider(ViewModelStoreOwner), passing in the activity.

Creates a ViewModelProvider, which retains ViewModels while a scope of given Activity is alive. More detailed explanation is in ViewModel.

It uses the default factory to instantiate new ViewModels.

Parameters
activity	FragmentActivity: an activity, in whose scope ViewModels should be retained

Return
ViewModelProvider	a ViewModelProvider instance

of

@NonNull @MainThread open static fun of(
    @NonNull fragment: Fragment, 
    @Nullable factory: ViewModelProvider.Factory?
): ViewModelProvider

Deprecated: Use the 'by viewModels()' Kotlin property delegate or ViewModelProvider#ViewModelProvider(ViewModelStoreOwner, Factory), passing in the fragment and factory.

Creates a ViewModelProvider, which retains ViewModels while a scope of given fragment is alive. More detailed explanation is in ViewModel.

It uses the given Factory to instantiate new ViewModels.

Parameters
fragment	Fragment: a fragment, in whose scope ViewModels should be retained
factory	ViewModelProvider.Factory?: a Factory to instantiate new ViewModels

Return
ViewModelProvider	a ViewModelProvider instance

of

@NonNull @MainThread open static fun of(
    @NonNull activity: FragmentActivity, 
    @Nullable factory: ViewModelProvider.Factory?
): ViewModelProvider

Deprecated: Use the 'by viewModels()' Kotlin property delegate or ViewModelProvider#ViewModelProvider(ViewModelStoreOwner, Factory), passing in the activity and factory.

Creates a ViewModelProvider, which retains ViewModels while a scope of given Activity is alive. More detailed explanation is in ViewModel.

It uses the given Factory to instantiate new ViewModels.

Parameters
activity	FragmentActivity: an activity, in whose scope ViewModels should be retained
factory	ViewModelProvider.Factory?: a Factory to instantiate new ViewModels

Return
ViewModelProvider	a ViewModelProvider instance