Detecting the scrolling direction in the adapter (up/down)

Question

I am trying to mimic the Google Plus application in my project, as it seems to be the reference now.

The listview effect when scrolling is really nice and I would li

Answer 1

More complex solution (working with long items height in listview)

1. Create custom listview

   public class ScrollDetectingListView extends ListView {
       public ScrollDetectingListView(Context context) {
           super(context);
       }
   
       public ScrollDetectingListView(Context context, AttributeSet attrs) {
           super(context,attrs);
       } 
   
       public ScrollDetectingListView(Context context, AttributeSet attrs, int defStyle) {
           super(context, attrs, defStyle);
       }
   
       //we need this protected method for scroll detection
       public int getVerticalScrollOffset() {
           return computeVerticalScrollOffset();
       }
   }
   

2. Override onScroll

       listView.setOnScrollListener(new AbsListView.OnScrollListener() {
   
       private int mInitialScroll = 0;
   
       @Override
       public void onScrollStateChanged(AbsListView view, int scrollState) {
   
       }
   
       @Override
       public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
           int scrolledOffset = listView.getVerticalScrollOffset();
           if (scrolledOffset!=mInitialScroll) {
               //if scroll position changed
               boolean scrollUp = (scrolledOffset - mInitialScroll) < 0;
               mInitialScroll = scrolledOffset;
           }
       }
       });