Added in API level 1

DataSetObserver

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Kotlin |Java

abstract class DataSetObserver

kotlin.Any
↳	android.database.DataSetObserver

Known Direct Subclasses AlphabetIndexer 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
DataSetObserver()

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 android.

Public constructors

DataSetObserver

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 android.database.Cursor#close() on a Cursor.