Android基础 为listView增加更多按钮(分页显示)

package com.su.morebutton;


import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;


import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;


public class TestListViewGetMoreButtonActivity extends Activity {
	private LinearLayout home_more;
	private TextView home_tvmore;
	private LinearLayout loading;
	private ListView home_ListView;
	private SimpleAdapter simpleAdapter;
	private ArrayList<HashMap<String, String>> mylist;


	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		home_more = (LinearLayout) LayoutInflater.from(
				TestListViewGetMoreButtonActivity.this).inflate(
				R.layout.list_more, null);
		home_tvmore = (TextView) home_more.findViewById(R.id.more_tv);
		loading = (LinearLayout) home_more.findViewById(R.id.loading);
		loading.setVisibility(View.GONE);
		home_ListView = (ListView) findViewById(R.id.listView1);
		home_ListView.addFooterView(home_more, null, false);//增加那个 更多按钮
		home_tvmore.setOnClickListener(new View.OnClickListener() {


			@Override
			public void onClick(View v) {
				home_tvmore.setVisibility(View.GONE);
				loading.setVisibility(View.VISIBLE);
				run = true;
				Thread thread = new Thread(new ThreadDemo());//开启获取新数据的线程
				thread.start();


			}
		});


		// 初始化listview
		mylist = new ArrayList<HashMap<String, String>>();


		for (int i = 0; i < 7; i++) {
			HashMap<String, String> map = new HashMap<String, String>();
			map.put("ItemTitle", "This is Title.....");
			map.put("ItemText", "This is text.....");
			mylist.add(map);
		}


		simpleAdapter = new SimpleAdapter(this, mylist, R.layout.item,
				new String[] { "ItemTitle", "ItemText" }, new int[] {
						R.id.ItemTitle, R.id.ItemText });
		home_ListView.setAdapter(simpleAdapter);


	}


	Handler endSessionHandle = new Handler() {
		@Override
		public void handleMessage(Message msg) {
			finish();
		}
	};
	private boolean run = true;


	class ThreadDemo implements Runnable {
		Message msg = handle.obtainMessage();


		public void run() {
			while (run) {
				msg.obj = getDate();
				msg.what = 1;
				handle.sendMessage(msg);
				run = false;
			}
		}


	}


	Handler handle = new Handler() {
		@SuppressWarnings("unchecked")
		public void handleMessage(Message msg) {


			if (msg.what == 1) {
				Log.e("测试", "");
				mylist.addAll((ArrayList<HashMap<String, String>>) msg.obj);
				simpleAdapter.notifyDataSetChanged();
				home_tvmore.setVisibility(View.VISIBLE);// 再次回到以前状态
				loading.setVisibility(View.GONE);
			}
		}
	};


	/**
	 * 获取list的数据一般是来自网络
	 */
	private ArrayList<HashMap<String, String>> getDate() {
		ArrayList<HashMap<String, String>> newList = new ArrayList<HashMap<String, String>>();
		try {


			for (int i = 0; i < 5; i++) {


				// 执行的增加数据方法


				HashMap<String, String> map = new HashMap<String, String>();
				map.put("ItemTitle", "Added Title.....");
				map.put("ItemText", "added text.....");
				newList.add(map);


				if (i == 4) {


				}
				Thread.sleep(500);
			}


		} catch (Exception e) {
			e.printStackTrace();
			Log.e("WeiboPub", e.getMessage());
		}
		return newList;
	}
}

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