Loader

Kotlin |Java

open class Loader<D : Any!>

kotlin.Any
↳	androidx.loader.content.Loader

Known Direct Subclasses AsyncTaskLoader AsyncTaskLoader Static library support version of the framework's android.content.AsyncTaskLoader.

Known Indirect Subclasses CursorLoader CursorLoader Static library support version of the framework's android.content.CursorLoader.

Static library support version of the framework's android.content.Loader. Used to write apps that run on platforms prior to Android 3.0. When running on Android 3.0 or above, this implementation is still used; it does not try to switch to the framework's implementation. See the framework SDK documentation for a class overview.

Summary

Nested classes
	ForceLoadContentObserver An implementation of a ContentObserver that takes care of connecting it to the Loader to have the loader re-load its data when the observer is told it has changed.
abstract	OnLoadCanceledListener Interface that is implemented to discover when a Loader has been canceled before it finished loading its data.
abstract	OnLoadCompleteListener Interface that is implemented to discover when a Loader has finished loading its data.

Public constructors
<init>(@NonNull context: Context) Stores away the application context associated with context.

Public methods
open Unit	abandon() This function will normally be called for you automatically by LoaderManager when restarting a Loader.
open Boolean	cancelLoad() Attempt to cancel the current load task.
open Unit	commitContentChanged() Commit that you have actually fully processed a content change that was returned by takeContentChanged.
open String	dataToString(@Nullable data: D?) For debugging, converts an instance of the Loader's data class to a string that can be printed.
open Unit	deliverCancellation() Informs the registered OnLoadCanceledListener that the load has been canceled.
open Unit	deliverResult(@Nullable data: D?) Sends the result of the load to the registered listener.
open Unit	dump(prefix: String!, fd: FileDescriptor!, writer: PrintWriter!, args: Array<String!>!) Print the Loader's state into the given stream.
open Unit	forceLoad() Force an asynchronous load.
open Context	getContext()
open Int	getId()
open Boolean	isAbandoned() Return whether this loader has been abandoned.
open Boolean	isReset() Return whether this load has been reset.
open Boolean	isStarted() Return whether this load has been started.
open Unit	onContentChanged() Called when ForceLoadContentObserver detects a change.
open Unit	registerListener(id: Int, @NonNull listener: Loader.OnLoadCompleteListener<D>) Registers a class that will receive callbacks when a load is complete.
open Unit	registerOnLoadCanceledListener(@NonNull listener: Loader.OnLoadCanceledListener<D>) Registers a listener that will receive callbacks when a load is canceled.
open Unit	reset() This function will normally be called for you automatically by LoaderManager when destroying a Loader.
open Unit	rollbackContentChanged() Report that you have abandoned the processing of a content change that was returned by takeContentChanged() and would like to rollback to the state where there is again a pending content change.
Unit	startLoading() This function will normally be called for you automatically by LoaderManager when the associated fragment/activity is being started.
open Unit	stopLoading() This function will normally be called for you automatically by LoaderManager when the associated fragment/activity is being stopped.
open Boolean	takeContentChanged() Take the current flag indicating whether the loader's content had changed while it was stopped.
open String	toString()
open Unit	unregisterListener(@NonNull listener: Loader.OnLoadCompleteListener<D>) Remove a listener that was previously added with registerListener.