问游标getPosition始终为0

EN

Cursor cursor = getContext().getContentResolver().query(uri, PROJECTION,null,null,null);
    MyLog.d(TAG,"cursor count is %s",cursor.getCount());
    cursor.moveToFirst();
    CursorAdapter cursorAdapter = new CursorAdapter(getContext(),cursor,true){
        @Override
        public View newView(Context context,Cursor cursor,ViewGroup parent){
            MyLog.d(TAG,"newView cursor count %s position %s",cursor.getCount(),cursor.getPosition());
            return LayoutInflater.from(context).inflate(R.layout.my_row,parent,false);
        }

        @Override
        public void bindView(View view,Context context,Cursor cursor){
            MyLog.d(TAG,"bindView at index %s",cursor.getPosition());
            TextView name = (TextView) view.findViewById(R.id.name);
            TextView address = (TextView) view.findViewById(R.id.address);
            String naTxt = cursor.getString(COL_NAME);
            String addTxt = cursor.getString(COL_ADDR)
                    +" "
                    +cursor.getString(COL_STR);
            name.setText(naTxt);
            address.setText(addTxt);
        }
    };

    root.setAdapter(cursorAdapter);