DataSetObserver

Kotlin |Java

abstract class DataSetObserver

kotlin.Any
↳	android.database.DataSetObserver

Known Direct Subclasses

AlphabetIndexer

A helper class for adapters that implement the SectionIndexer interface.

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.

Summary

Public constructors
`<init>()`

Public methods
open Unit	`onChanged()` This method is called when the entire data set has changed, most likely through a call to `Cursor#requery()` on a `Cursor`.
open Unit	`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`.

Public constructors

<init>

DataSetObserver()

Public methods

onChanged

Added in API level 1

open fun onChanged(): Unit

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

onInvalidated

Added in API level 1

open fun onInvalidated(): Unit

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