PullToRefreshListView下拉刷新与上拉加载

【实例截图】

【核心代码】

package com.example.refreshdemo;

import java.util.ArrayList;
import java.util.List;

import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode;
import com.handmark.pulltorefresh.library.PullToRefreshListView;

import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.graphics.Color;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener2;

public class MainActivity extends Activity {
	private PullToRefreshListView mPtrlv;
	private List<String> list;
	private MyAdapter mAdapter;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		mPtrlv=(PullToRefreshListView) findViewById(R.id.ptrlv);
		//设置模式，BOTH：上拉下拉
		//DISABLED:取消上拉下拉
		//PULL_FROM_END：只上拉
		//PULL_FROM_START:只下拉
		mPtrlv.setMode(Mode.BOTH);
		list=new ArrayList<String>();
		
		initData();
		setListener();
		mAdapter=new MyAdapter();
		mPtrlv.setAdapter(mAdapter);
		
	}
	
	/**
	 * 初始化模拟数据
	 */
	private void initData() {
		for (int i = 0; i < 10; i  ) {
			list.add("模拟数据" i);
		}
	}
	
	
	private void setListener() {
		mPtrlv.setOnRefreshListener(new OnRefreshListener2<ListView>() {
			/**
			 * 下拉刷新
			 * 如果需要下拉加载上一页，在这个方法onPullDownToRefresh()做处理
			 */
			int x=1;
			@Override
			public void onPullDownToRefresh(
					PullToRefreshBase<ListView> refreshView) {
				list.add(0, "下拉刷新<<<上一页：" x  );
				//通知数据改变
				mAdapter.notifyDataSetChanged();
				
				new MyTask().execute();
			}
			
			/**
			 * 上拉加载
			 * 如果需要下拉加载上一页，在这个方法onPullUpToRefresh()做处理
			 */
			int y=1;
			@Override
			public void onPullUpToRefresh(
					PullToRefreshBase<ListView> refreshView) {
				list.add("上拉加载>>>下一页：" y  );
				//通知数据改变
				mAdapter.notifyDataSetChanged();
				
				new MyTask().execute();
			}
		});
	}
	
	/**
	 * 自定义适配器
	 * @author Endoon
	 * 2015-7-24 09:23:19
	 */
	class MyAdapter extends BaseAdapter{

		@Override
		public int getCount() {
			return list.size();
		}

		@Override
		public Object getItem(int position) {
			return position;
		}

		@Override
		public long getItemId(int position) {
			return position;
		}

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {
			TextView mView=new TextView(getApplicationContext());
			mView.setText(list.get(position));
			mView.setTextColor(Color.RED);
			mView.setGravity(Gravity.CENTER);
			return mView;
		}
	}
	
	/**
	 * 异步加载数据
	 * @author Endoon
	 * 2015-7-24 09:23:12
	 */
	class MyTask extends AsyncTask<Void, Void, Void>{
		@Override
		protected Void doInBackground(Void... params) {
			return null;
		}
	
		@Override
		protected void onPostExecute(Void result) {
			super.onPostExecute(result);
			//Mark the current Refresh as complete. Will Reset the UI and hide the Refreshing View
			mPtrlv.onRefreshComplete();//刷新UI
		}
	};
}