IT. Expert System.

All Known Implementing Classes:

GridScrollListener, GridScrollListenerTest, ListScrollListener, ListScrollListenerTest

Enclosing class:

AbsListView

public static interface AbsListView.OnScrollListener

• Field Summary

  Fields

  Modifier and Type	Field and Description
  static int	SCROLL_STATE_FLING The user had previously been scrolling using touch and had performed a fling.
  static int	SCROLL_STATE_IDLE The view is not scrolling.
  static int	SCROLL_STATE_TOUCH_SCROLL The user is scrolling using touch, and their finger is still on the screen

• Method Summary

  Methods

  Modifier and Type	Method and Description
  void	onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) Callback method to be invoked when the list or grid has been scrolled.
  void	onScrollStateChanged(AbsListView view, int scrollState) Callback method to be invoked while the list view or grid view is being scrolled.

• Field Detail

  • SCROLL_STATE_IDLE

    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.

    See Also:

    Constant Field Values

  • SCROLL_STATE_TOUCH_SCROLL

    static final int SCROLL_STATE_TOUCH_SCROLL

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

    See Also:

    Constant Field Values

  • SCROLL_STATE_FLING

    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

    See Also:

    Constant Field Values

• Method Detail

  • onScrollStateChanged

    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 - The view whose scroll state is being reported

    scrollState - The current scroll state. One of SCROLL_STATE_IDLE, SCROLL_STATE_TOUCH_SCROLL or SCROLL_STATE_IDLE.

  • onScroll

    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 - 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