added in API level 1

AbsListView.OnScrollListener

public static interface AbsListView.OnScrollListener

android.widget.AbsListView.OnScrollListener


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

SCROLL_STATE_FLING

added in API level 1
public static final int SCROLL_STATE_FLING

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)

SCROLL_STATE_IDLE

added in API level 1
public static final int SCROLL_STATE_IDLE

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)

SCROLL_STATE_TOUCH_SCROLL

added in API level 1
public static final int SCROLL_STATE_TOUCH_SCROLL

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

Constant Value: 1 (0x00000001)

Public methods

onScroll

added in API level 1
public abstract void onScroll (AbsListView view, 
                int firstVisibleItem, 
                int visibleItemCount, 
                int totalItemCount)

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

Parameters
view AbsListView: The view whose scroll state is being reported

firstVisibleItem int: the index of the first visible cell (ignore if visibleItemCount == 0)

visibleItemCount int: the number of visible cells

totalItemCount int: the number of items in the list adapter

onScrollStateChanged

added in API level 1
public abstract void onScrollStateChanged (AbsListView view, 
                int scrollState)

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 Adapter.getView(int, View, ViewGroup).

Parameters
view AbsListView: The view whose scroll state is being reported

scrollState int: The current scroll state. One of SCROLL_STATE_TOUCH_SCROLL or SCROLL_STATE_IDLE.