Dynamically updating ListView with extended SimpleCursorAdapter and Alternate LiteItem Styles

Question

hi im displaying a ListView with SimpleCursorAdapter and alternat ListItem styles, i want to dynamically update the list if the user is on the view and an update occurs. In my ListActivity i have done

 adapter.swapCursor(newCursor);
 //notify

in my adapter which extends from SimpleCursorAdapter i have two overridden methods

 @Override
        public int getViewTypeCount() {         
            return 2;
        }

and

    @Override
    public int getItemViewType(int position) {
             adapCursor.moveToPosition(position);//adapCursor is being set in the constructor
        int i= adapCursor.getInt(adapterCursor.getColumnIndexOrThrow("isactive"));

         return i==1?i:0;

      }

now the problem is when i update the adapter in the activity the updated cursor is not available in getItemViewType method and hence an index out of bound exception is thrown...

How can i get the updated cursor in it or return proper ItemViewType

Regards

Answer 1

You can use the getCursor() method to get the right reference to the Cursor on which the adapter is based, even after changing it with swapCursor(). This way you don't need to manually keep/update the reference to the Cursor.

Answer 2

found the solution

just overrided the swapCursor method

        @Override
        public Cursor swapCursor(Cursor c){         
            super.swapCursor(c);
            adapCursor=c;
            return c;               
        }