to top
Android APIs
Added in API level 1
public static interface

AbsListView.OnScrollListener

android.widget.AbsListView.OnScrollListener

Class Overview

Interface definition for a callback to be invoked when the list or grid has been scrolled.

Summary

Constants
int SCROLL_STATE_FLING The user had previously been scrolling using touch and had performed a fling.
int SCROLL_STATE_IDLE The view is not scrolling.
int SCROLL_STATE_TOUCH_SCROLL The user is scrolling using touch, and their finger is still on the screen
Public Methods
abstract void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount)
Callback method to be invoked when the list or grid has been scrolled.
abstract void onScrollStateChanged(AbsListView view, int scrollState)
Callback method to be invoked while the list view or grid view is being scrolled.

Constants

public static final int SCROLL_STATE_FLING

Added in API level 1

The user had previously been scrolling using touch and had performed a fling. The animation is now coasting to a stop

Constant Value: 2 (0x00000002)

public static final int SCROLL_STATE_IDLE

Added in API level 1

The view is not scrolling. Note navigating the list using the trackball counts as being in the idle state since these transitions are not animated.

Constant Value: 0 (0x00000000)

public static final int SCROLL_STATE_TOUCH_SCROLL

Added in API level 1

The user is scrolling using touch, and their finger is still on the screen

Constant Value: 1 (0x00000001)

Public Methods

public abstract void onScroll (AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount)

Added in API level 1

Callback method to be invoked when the list or grid has been scrolled. This will be called after the scroll has completed

Parameters
view The view whose scroll state is being reported
firstVisibleItem the index of the first visible cell (ignore if visibleItemCount == 0)
visibleItemCount the number of visible cells
totalItemCount the number of items in the list adaptor

public abstract void onScrollStateChanged (AbsListView view, int scrollState)

Added in API level 1

Callback method to be invoked while the list view or grid view is being scrolled. If the view is being scrolled, this method will be called before the next frame of the scroll is rendered. In particular, it will be called before any calls to getView(int, View, ViewGroup).

Parameters
view The view whose scroll state is being reported
scrollState The current scroll state. One of SCROLL_STATE_TOUCH_SCROLL or SCROLL_STATE_IDLE.