question: public void handleDrop ( ) { if ( mDraggedEntry != null ) { if ( isIndexInBound ( mDragEnteredEntryIndex ) && mDragEnteredEntryIndex != mDraggedEntryIndex ) { mDropEntryIndex = mDragEnteredEntryIndex ; mDragEntries . set ( mDropEntryIndex , mDraggedEntry ) ; cacheOffsetsForDataSetChange ( ) ; notifyDataSetChanged ( ) ; } else if ( isIndexInBound ( mDraggedEntryIndex ) ) { mDragEntries . remove ( mDragEnteredEntryIndex ) ; mDragEntries . add ( mDraggedEntryIndex , mDraggedEntry ) ; mDropEntryIndex = mDraggedEntryIndex ; notifyDataSetChanged ( ) ; } mDraggedEntry = null ; if ( mDraggedEntryIndex != mDragEnteredEntryIndex ) { mDragDropListener . onDataSetChangedForResult ( mDragEntries ) ; } } }
target:  Drops the temporarily removed contact to the desired location in the list.