Skip to content

Most visited

Recently visited


belongs to Maven artifact


public final class OperationMonitor
extends Object

   ↳ androidx.recyclerview.selection.OperationMonitor

OperationMonitor provides a mechanism to coordinate application logic with ongoing user selection activities (such as active band selection and active gesture selection).

The host Activity or Fragment should avoid changing Adapter data while there are active selection operations, as this can result in a poor user experience.

To know when an operation is active listen to changes using an OperationMonitor.OnChangeListener.


Nested classes

interface OperationMonitor.OnChangeListener

Listen to changes in operation status. 

Public constructors


Public methods

void addListener(OperationMonitor.OnChangeListener listener)

Registers supplied listener to be notified when operation status changes.

boolean isStarted()
void removeListener(OperationMonitor.OnChangeListener listener)

Unregisters listener for further notifications.

Inherited methods

From class java.lang.Object

Public constructors


OperationMonitor ()

Public methods


void addListener (OperationMonitor.OnChangeListener listener)

Registers supplied listener to be notified when operation status changes.


boolean isStarted ()

boolean true if there are any running operations.


void removeListener (OperationMonitor.OnChangeListener listener)

Unregisters listener for further notifications.

This site uses cookies to store your preferences for site-specific language and display options.

Get the latest Android developer news and tips that will help you find success on Google Play.

* Required Fields


Follow Google Developers on WeChat

Browse this site in ?

You requested a page in , but your language preference for this site is .

Would you like to change your language preference and browse this site in ? If you want to change your language preference later, use the language menu at the bottom of each page.

This class requires API level or higher

This doc is hidden because your selected API level for the documentation is . You can change the documentation API level with the selector above the left navigation.

For more information about specifying the API level your app requires, read Supporting Different Platform Versions.

Take a short survey?
Help us improve the Android developer experience. (Dec 2017 Android Platform & Tools Survey)