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2014/10/16 ¤W¤È 08:14:08
android Programming Glossary: getfirstvisiblepositionPinned groups in ExpandableListView http://stackoverflow.com/questions/10613552/pinned-groups-in-expandablelistview 0 0 mHeaderViewWidth mHeaderViewHeight configureHeaderView getFirstVisiblePosition animating header pushing @param position public void configureHeaderView..
Android getting exact scroll position in ListView http://stackoverflow.com/questions/10808387/android-getting-exact-scroll-position-in-listview View c listview.getChildAt 0 int scrolly c.getTop listview.getFirstVisiblePosition c.getHeight The way it works is it takes the actual offset of..
http://stackoverflow.com/questions/11468536/android-gallery-zoom-in-out gallery final int viewsOnScreen getLastVisiblePosition getFirstVisiblePosition if viewsOnScreen 0 super.onLayout changed l t r b private.. 0 final int centerPosition getSelectedItemPosition getFirstVisiblePosition if i childCount 1 return centerPosition else if i centerPosition..
Change the behaviour of a GridView to make it scroll horizontally rather than vertically http://stackoverflow.com/questions/11577153/change-the-behaviour-of-a-gridview-to-make-it-scroll-horizontally-rather-than-ve int l int r int b super.layout t l r b ... int columnStart getFirstVisiblePosition no_of_columns int columnEnd getLastVisiblePosition no_of_columns..
Android ListView: get data index of visible item http://stackoverflow.com/questions/2001760/android-listview-get-data-index-of-visible-item improve this question It's very easy. Just use ListView.getFirstVisiblePosition indexYouWant . For instance to get the position in the adapter.. of the 2nd child displayed in the ListView just use getFirstVisiblePosition 1 . No need for all the scary stuff shown in the reply above..
Android ListView Refresh Single Row http://stackoverflow.com/questions/2123083/android-listview-refresh-single-row First check if the index of the updated row is between getFirstVisiblePosition and getLastVisiblePosition these two give you the first and..
Pinned groups in ExpandableListView http://stackoverflow.com/questions/10613552/pinned-groups-in-expandablelistview top right bottom if mHeaderView null mHeaderView.layout 0 0 mHeaderViewWidth mHeaderViewHeight configureHeaderView getFirstVisiblePosition animating header pushing @param position public void configureHeaderView int position final int group getPackedPositionGroup..
Android getting exact scroll position in ListView http://stackoverflow.com/questions/10808387/android-getting-exact-scroll-position-in-listview Okay I found a workaround using the following code View c listview.getChildAt 0 int scrolly c.getTop listview.getFirstVisiblePosition c.getHeight The way it works is it takes the actual offset of the first visible list item and calculates how far it is from..
http://stackoverflow.com/questions/11468536/android-gallery-zoom-in-out more http www.unwesen.de 2011 04 17 android jittery scrolling gallery final int viewsOnScreen getLastVisiblePosition getFirstVisiblePosition if viewsOnScreen 0 super.onLayout changed l t r b private int mLastDrawnPosition @Override protected int getChildDrawingOrder.. time we are starting a new drawing loop if i 0 mLastDrawnPosition 0 final int centerPosition getSelectedItemPosition getFirstVisiblePosition if i childCount 1 return centerPosition else if i centerPosition mLastDrawnPosition return childCount mLastDrawnPosition..
Change the behaviour of a GridView to make it scroll horizontally rather than vertically http://stackoverflow.com/questions/11577153/change-the-behaviour-of-a-gridview-to-make-it-scroll-horizontally-rather-than-ve 's overriden layout method. @override void layout int t int l int r int b super.layout t l r b ... int columnStart getFirstVisiblePosition no_of_columns int columnEnd getLastVisiblePosition no_of_columns loop from 'columnStart' to 'columnEnd' 'no_of_colmns' times..
Android ListView: get data index of visible item http://stackoverflow.com/questions/2001760/android-listview-get-data-index-of-visible-item adapter. Anyone have any thoughts android listview share improve this question It's very easy. Just use ListView.getFirstVisiblePosition indexYouWant . For instance to get the position in the adapter of the 2nd child displayed in the ListView just use getFirstVisiblePosition..
Android ListView Refresh Single Row http://stackoverflow.com/questions/2123083/android-listview-refresh-single-row question One option is to manipulate the ListView directly. First check if the index of the updated row is between getFirstVisiblePosition and getLastVisiblePosition these two give you the first and last positions in the adapter that are visible on the screen...
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