listview必须设置数据适配器才能显示出来

lvTabDetail.setAdapter(new NewsListAdapter());

    class NewsListAdapter extends BaseAdapter{

        @Override
        public int getCount() {
            // TODO Auto-generated method stub
            return 0;
        }

        @Override
        public Object getItem(int position) {
            // TODO Auto-generated method stub
            return null;
        }

        @Override
        public long getItemId(int position) {
            // TODO Auto-generated method stub
            return 0;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            // TODO Auto-generated method stub
            return null;
        }
        
    }