android.database

Class DataSetObserver

java.lang.Object

android.database.DataSetObserver

public abstract class DataSetObserver
extends Object

Receives call backs when a data set has been changed, or made invalid. The typically data sets that are observed are Cursors or android.widget.Adapters. DataSetObserver must be implemented by objects which are added to a DataSetObservable.

Constructor Summary

Constructors

Constructor and Description
DataSetObserver()

Method Summary

Modifier and Type	Method and Description
void	onChanged() This method is called when the entire data set has changed, most likely through a call to Cursor.requery() on a Cursor.
void	onInvalidated() This method is called when the entire data becomes invalid, most likely through a call to Cursor.deactivate() or Cursor.close() on a Cursor.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DataSetObserver

public DataSetObserver()

Method Detail

onChanged

public void onChanged()

This method is called when the entire data set has changed, most likely through a call to Cursor.requery() on a Cursor.

onInvalidated

public void onInvalidated()

This method is called when the entire data becomes invalid, most likely through a call to Cursor.deactivate() or Cursor.close() on a Cursor.