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.
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. |
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)
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)
int SCROLL_STATE_TOUCH_SCROLL
The user is scrolling using touch, and their finger is still on the screen
Constant Value: 1 (0x00000001)
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 adaptor
|
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
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.
|
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