SiteShareUserActivity.java

package com.partynetwork.iparty.site;

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;

import org.codehaus.jackson.JsonNode;
import org.codehaus.jackson.JsonProcessingException;
import org.codehaus.jackson.map.ObjectMapper;

import android.app.Activity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.ListView;

import com.partynetwork.dataprovider.util.T;
import com.partynetwork.dataprovider.util.Util;
import com.partynetwork.iparty.R;
import com.partynetwork.iparty.app.common.SinaWeiboHelper;
import com.sina.weibo.sdk.exception.WeiboException;
import com.sina.weibo.sdk.net.RequestListener;
import com.baidu.mobstat.StatService;
import com.lidroid.xutils.util.LogUtils;

public class SiteShareUserActivity extends Activity implements
		OnScrollListener, OnClickListener {
	public static final String PLAT_TYPE = "platType";
	public static final int SINA = 0;
	public static final int QQ = 1;
	public static final int RENREN = 2;
	/**
	 * 显示列表
	 */
	private ListView mListView;
	/** 平台类别 */
	private int platType;
	/** 用户适配器 */
	private SiteShareUserAdapter adapter;
	/** 最后的可视项索引 */
	private int visibleLastIndex = 0;

	/** 存放用户的list */
	private HashMap<String, Following> map;
	private List<Following> data;
	private boolean hasNext;
	/** 正在加载 */
	private boolean isLoading;
	private int pageNum = 0;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.site_share_plat_user);
		platType = getIntent().getIntExtra(PLAT_TYPE, SINA);
		initView();
		init();
	}

	private void initView() {
		findViewById(R.id.menu_head_left).setOnClickListener(this);
		mListView = (ListView) findViewById(R.id.listview);

	}

	/**
	 * 初始化
	 */
	private void init() {

		map = new HashMap<String, Following>();
		data = new ArrayList<Following>();
		adapter = new SiteShareUserAdapter(this, data);
		mListView.setAdapter(adapter);
		mListView.setOnScrollListener(this);
		initData();
	}

	/**
	 * 初始化数据
	 */
	private void initData() {

		getFriendList();
	}

	public void onClick(View view) {
		switch (view.getId()) {
		case R.id.menu_head_left:
			// 关闭
			finish();
			break;
		default:
			break;
		}
	}

	/**
	 * 获取平台好友列表
	 */
	private void getFriendList() {
		SinaWeiboHelper.getFriends(this, new RequestListener() {

			@Override
			public void onWeiboException(WeiboException arg0) {
				T.showShort(SiteShareUserActivity.this, arg0.getMessage());

			}

			@Override
			public void onComplete(String arg0) {
				if (!TextUtils.isEmpty(arg0)) {
					LogUtils.i(arg0);
					ObjectMapper om = new ObjectMapper();
					try {
						JsonNode treeNode = om.readTree(arg0);

						JsonNode dataNode = treeNode.path("users");
						List<LinkedHashMap<String, Object>> list = om
								.readValue(dataNode, List.class);
						if (list == null) {
							return;
						}
						for (LinkedHashMap<String, Object> lh : list) {
							Following following = new Following();
							following.name = lh.get("name").toString();
							following.uid = lh.get("id").toString();
							following.icon = lh.get("avatar_large").toString();
							following.sex = lh.get("gender").toString();
							following.description = lh.get("description")
									.toString();
							data.add(following);
						}
						adapter.notifyDataSetChanged();

					} catch (JsonProcessingException e) {
						e.printStackTrace();
					} catch (IOException e) {
						e.printStackTrace();
					}

				}

			}
		});
		Util.showMsg(this, "加载中请稍后！");
		isLoading = true;
	}

	public class Following {
		public boolean checked;
		public String name;
		public String description;
		public String uid;
		public String icon;
		public String sex;
	}

	@Override
	public void onScrollStateChanged(AbsListView view, int scrollState) {
		int itemsLastIndex = adapter.getCount() - 1; // 数据集最后一项的索引
		int lastIndex = itemsLastIndex; // 加上底部的loadMoreView项
		if (scrollState == OnScrollListener.SCROLL_STATE_IDLE
				&& visibleLastIndex == lastIndex) {
			// 如果是自动加载,可以在这里放置异步加载数据的代码
			if (hasNext) {
				getFriendList();
			}
		}
	}

	@Override
	public void onScroll(AbsListView view, int firstVisibleItem,
			int visibleItemCount, int totalItemCount) {
		visibleLastIndex = firstVisibleItem + visibleItemCount - 1;
	}

	@Override
	protected void onResume() {
		StatService.onResume(this);
		super.onResume();
	}

	@Override
	protected void onPause() {
		StatService.onPause(this);
		super.onPause();
	}

}