Android之library_PullToRefresh实现下拉刷新

一个简单的下拉刷新案例，很实用。

1、首先要在项目中加入library_PullToRefresh的库或者jar包。（文章后面提供资源及demo的链接）

2、在layout中使用PullToRefreshListView控件

<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=".MainActivity" > <com.handmark.pulltorefresh.library.PullToRefreshListView    android:id="@+id/pull_to_refresh_listview"    android:layout_height="fill_parent"    android:layout_width="fill_parent" /></RelativeLayout>

3、Activity中使用

package com.rainsong.pulltorefreshdemo;import java.util.Arrays;import java.util.LinkedList;import android.app.Activity;import android.os.AsyncTask;import android.os.Bundle;import android.text.format.DateUtils;import android.view.Menu;import android.widget.ArrayAdapter;import android.widget.ListView;import com.handmark.pulltorefresh.library.PullToRefreshBase;import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;import com.handmark.pulltorefresh.library.PullToRefreshListView;public class MainActivity extends Activity {    private PullToRefreshListView mPullToRefreshListView;    private LinkedList<String> mListItems;    private ArrayAdapter<String> mAdapter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);                // 设置一个监听器调用时刷新列表        mPullToRefreshListView = (PullToRefreshListView) findViewById(R.id.pull_to_refresh_listview);        mPullToRefreshListView.setOnRefreshListener(new OnRefreshListener<ListView>() {            @Override            public void onRefresh(PullToRefreshBase<ListView> refreshView) {                String label = DateUtils.formatDateTime(getApplicationContext(), System.currentTimeMillis(),                        DateUtils.FORMAT_SHOW_TIME | DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_ABBREV_ALL);                                // 添加时间                refreshView.getLoadingLayoutProxy().setLastUpdatedLabel(label);                                // 在此处刷新列表                new GetDataTask().execute();            }        });                ListView actualListView = mPullToRefreshListView.getRefreshableView();                mListItems = new LinkedList<String>();        mListItems.addAll(Arrays.asList(mStrings));                mAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mListItems);        actualListView.setAdapter(mAdapter);    }        private class GetDataTask extends AsyncTask<Void, Void, String[]> {        @Override        protected String[] doInBackground(Void... params) {            // 模拟一个耗时操作            try {                Thread.sleep(4000);            } catch (InterruptedException e) {            }            return mStrings;        }        @Override        protected void onPostExecute(String[] result) {            mListItems.addFirst("新增手机");            mAdapter.notifyDataSetChanged();                        // 刷新列表            mPullToRefreshListView.onRefreshComplete();            super.onPostExecute(result);        }    }    private String[] mStrings = { "华为", "小米", "魅族", "锤子", "oppo",            "vivo", "乐视", "三星", "诺基亚", "酷派", "努比亚", "中兴",            "联想", "360", "美图", "一加", "摩托罗拉", "苹果"};}

4、效果展示

5、资源下载

点击打开链接,下载依赖库及demo