利用第三方开源框架 PullToRefreshListView 实现下拉刷新

来源：互联网发布：淘宝女装店推荐编辑：程序博客网时间：2024/05/17 23:53

效果如下：

第三方开源框架 PullToRefreshListView 链接：点击打开链接

布局文件：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.android.flush.MainActivity" >    <com.handmark.pulltorefresh.library.PullToRefreshListView        android:id="@+id/listView"        android:layout_width="match_parent"        android:layout_height="match_parent"/></RelativeLayout>

package com.android.flush;import java.util.ArrayList;import com.handmark.pulltorefresh.library.PullToRefreshBase;import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode;import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;import com.handmark.pulltorefresh.library.PullToRefreshListView;import android.app.Activity;import android.os.AsyncTask;import android.os.Bundle;import android.widget.ArrayAdapter;import android.widget.ListView;import android.widget.TextView;public class MainActivity extends Activity {private int count = 0;private PullToRefreshListView listView;private ArrayAdapter<String> adapter;private ArrayList<String> mDatas = new ArrayList<String>(); @Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);listView = (PullToRefreshListView)findViewById(R.id.listView);mDatas = new ArrayList<String>();adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mDatas);// 设置刷新模式listView.setMode(Mode.PULL_FROM_START);listView.setOnRefreshListener(new OnRefreshListener<ListView>() {@Overridepublic void onRefresh(PullToRefreshBase<ListView> refreshView) {new MyTask().execute();}});listView.setAdapter(adapter);// 设置提示信息TextView textView = new TextView(this);textView.setText("下拉刷新");listView.setEmptyView(textView);}private class MyTask extends AsyncTask<Integer, Integer, Integer>{@Overrideprotected Integer doInBackground(Integer... params) {try {Thread.sleep(2000);} catch (InterruptedException e) {e.printStackTrace();}return count++;}@Overrideprotected void onPreExecute() {listView.setRefreshing();}@Overrideprotected void onPostExecute(Integer result) {mDatas.add(0, result++ +"");listView.setLastUpdatedLabel("更新时间:" + System.currentTimeMillis());// 通知 adapter 更新，不能少adapter.notifyDataSetChanged();listView.onRefreshComplete();}}}

0 0