io.realm

Interface RealmObjectChangeListener<T extends RealmModel>

Type Parameters:

T - The type of RealmModel on which your listener will be registered.

public interface RealmObjectChangeListener<T extends RealmModel>

RealmObjectChangeListener can be registered on a RealmModel or RealmObject to receive detailed notifications when an object changes.

Realm instances on a thread without an Looper cannot register a RealmObjectChangeListener.

Listener cannot be registered inside a transaction.

See Also:

Realm.addChangeListener(RealmChangeListener), Realm.removeAllChangeListeners(), Realm.removeChangeListener(RealmChangeListener)

Method Summary

Modifier and Type	Method and Description
void	onChange(T t, ObjectChangeSet changeSet) When this gets called to return the results of an asynchronous query made by RealmQuery.findFirstAsync(), changeSet will be null.

Method Detail

onChange

void onChange(T t,
              ObjectChangeSet changeSet)

When this gets called to return the results of an asynchronous query made by RealmQuery.findFirstAsync(), changeSet will be null.

When this gets called because the object was deleted, changeSet.isDeleted() will return true and changeSet.getFieldChanges() will return null.

When this gets called because the object was modified, changeSet.isDeleted() will return false and changeSet.getFieldChanges() will return the detailed information about the fields' changes.

If a field points to another RealmObject this listener will only be triggered if the field is set to a new object or null. Updating the referenced RealmObject will not trigger this listener.

If a field points to a RealmList, this listener will only be triggered if one or multiple objects are inserted, removed or moved within the List. Updating the objects in the RealmList will not trigger this listener.

Changes to LinkingObjects annotated RealmResults fields will not be monitored, nor reported through this change listener.

Parameters:

t - the RealmObject this listener is registered to.

changeSet - the detailed information about the changes.