android--------自定义控件ListView实现下拉刷新和上拉加载

开发项目过程中基本都会用到listView的下拉刷新和上滑加载更多，为了方便重写的ListView来实现下拉刷新，同时添加了上拉自动加载更多的功能。

Android下拉刷新可以分为两种情况：

1.获取更多的数据，按服务器数据库时间顺序存储入情况，此刻我们是获取是显示在我们应用中的数据更早前的数据，这也是最常见的情况，比如（微博获取更多信息，就是获取更多更早前的信息，然后动态的添加到已有的数据的下方）；

2.获取更多的最新的数据，其实还是一种获取更多的操作方式。

public class MainActivity extends Activity implements IXListViewListener {

    private XListView listView;
    private int in = 6;
    private Adapter adapter;
    private Handler mHandler;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();

    }

    private void initView() {
        // TODO Auto-generated method stub
        listView = (XListView) findViewById(R.id.list);
        listView.setPullLoadEnable(true);
        adapter = new Adapter(MainActivity.this);
        listView.setAdapter(adapter);
        listView.setXListViewListener(this);
        mHandler = new Handler();

    }

    private void onLoad() {
        listView.stopRefresh();
        listView.stopLoadMore();
        listView.setRefreshTime("刚刚");
    }

    @Override
    public void onRefresh() {
        mHandler.postDelayed(new Runnable() {
            @Override
            public void run() {
                onLoad();
            }
        }, 2000);
    }

    @Override
    public void onLoadMore() {
        mHandler.postDelayed(new Runnable() {
            @Override
            public void run() {
                in += 4;
                onLoad();
            }
        }, 2000);
    }

    private static String[] string = new String[] { "民政局于，请带好相关证件文书 ",
            "财政部发布公告，由于资金调整信息未完善，下周在发放工资，请各位见谅",
            "信息部门于2016-11-11日在某某地方开会，特此通知，请带好相关证件",
            "党政办发放通知，有关贫困地区扶贫政策，希望每个部门做出相应的方案，于2016-11-11开会讨论" };

    public class Adapter extends BaseAdapter {

        private Context context;
        private LayoutInflater inflater;

        public Adapter(Context context) {
            // TODO Auto-generated constructor stub
            this.context = context;
            inflater = LayoutInflater.from(context);
        }

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

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

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

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            // TODO Auto-generated method stub
            ViewHolder holder = null;
            final int index = position;
            if (convertView == null) {
                convertView = inflater.inflate(R.layout.item_news_mass, null);
                holder = new ViewHolder(convertView);
                convertView.setTag(holder);
            } else {
                holder = (ViewHolder) convertView.getTag();
            }
            holder.mName.setText(string[(position % 4)]);

            return convertView;
        }

        class ViewHolder {
            private ImageView mImageView;
            private TextView mName;

            public ViewHolder(View view) {
                mName = (TextView) view.findViewById(R.id.item_news_msg);

            }
        }

    }
}

由于代码太多，完整代码未给出，源码直接下载即可

源码下载：  https://github.com/DickyQie/android-list-control