public final class ViewModelProvider
A utility class that provides ViewModels for a scope.
Default ViewModelProvider for an Activity or a Fragment can be obtained by passing it to the constructor: ViewModelProvider(myFragment)
Summary
Public methods |
|
|---|---|
@NonNull T |
Returns an existing ViewModel or creates a new one in the scope (usually, a fragment or an activity), associated with this |
final @NonNull T |
Returns an existing ViewModel or creates a new one in the scope (usually, a fragment or an activity), associated with this |
@NonNull T |
Returns an existing ViewModel or creates a new one in the scope (usually, a fragment or an activity), associated with this |
final @NonNull T |
Returns an existing ViewModel or creates a new one in the scope (usually, a fragment or an activity), associated with this |
Public constructors
Public methods
get
public @NonNull T <T extends ViewModel> get(@NonNull Class<@NonNull T> modelClass)
Returns an existing ViewModel or creates a new one in the scope (usually, a fragment or an activity), associated with this ViewModelProvider.
The created ViewModel is associated with the given scope and will be retained as long as the scope is alive (e.g. if it is an activity, until it is finished or process is killed).
| Parameters | |
|---|---|
@NonNull Class<@NonNull T> modelClass |
The class of the ViewModel to create an instance of it if it is not present. |
| Returns | |
|---|---|
@NonNull T |
A ViewModel that is an instance of the given type |
get
@MainThread
public final @NonNull T <T extends ViewModel> get(@NonNull KClass<@NonNull T> modelClass)
Returns an existing ViewModel or creates a new one in the scope (usually, a fragment or an activity), associated with this ViewModelProvider.
The created ViewModel is associated with the given scope and will be retained as long as the scope is alive (e.g. if it is an activity, until it is finished or process is killed).
| Parameters | |
|---|---|
@NonNull KClass<@NonNull T> modelClass |
The class of the ViewModel to create an instance of it if it is not present. |
| Returns | |
|---|---|
@NonNull T |
A ViewModel that is an instance of the given type |
get
public @NonNull T <T extends ViewModel> get(@NonNull String key, @NonNull Class<@NonNull T> modelClass)
Returns an existing ViewModel or creates a new one in the scope (usually, a fragment or an activity), associated with this ViewModelProvider.
The created ViewModel is associated with the given scope and will be retained as long as the scope is alive (e.g. if it is an activity, until it is finished or process is killed).
| Parameters | |
|---|---|
@NonNull String key |
The key to use to identify the ViewModel. |
@NonNull Class<@NonNull T> modelClass |
The class of the ViewModel to create an instance of it if it is not present. |
| Returns | |
|---|---|
@NonNull T |
A ViewModel that is an instance of the given type |
get
@MainThread
public final @NonNull T <T extends ViewModel> get(@NonNull String key, @NonNull KClass<@NonNull T> modelClass)
Returns an existing ViewModel or creates a new one in the scope (usually, a fragment or an activity), associated with this ViewModelProvider.
The created ViewModel is associated with the given scope and will be retained as long as the scope is alive (e.g. if it is an activity, until it is finished or process is killed).
| Parameters | |
|---|---|
@NonNull String key |
The key to use to identify the ViewModel. |
@NonNull KClass<@NonNull T> modelClass |
The class of the ViewModel to create an instance of it if it is not present. |
| Returns | |
|---|---|
@NonNull T |
A ViewModel that is an instance of the given type |