android下拉刷新控件之第三方开源控件的使用实现

本次使用的第三方下拉刷新控件是：Android-Pull-Refresh，下载地址：https://github.com/chrisbanes/Android-PullToRefresh

该控件适用于:

• ViewPager

• HorizontalScrollView

• ScrollView

• WebView

• GridView

• ListView

• ExpandableListView
• ListFragment
  

从github上下载解压后，将library,PullToRefreshListFragment,PullToRefreshViewPager导入项目后，右键自己新建的项目，选择Properties，进入如下图的页面后点击Add添加即可：

添加好后即可开始编写Demo，具体代码如下：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <!-- The PullToRefreshListView replaces a standard ListView widget. -->    <com.handmark.pulltorefresh.library.PullToRefreshListView        xmlns:ptr="http://schemas.android.com/apk/res-auto"        android:id="@+id/pull_refresh_list"        android:layout_width="fill_parent"        android:layout_height="fill_parent"        android:cacheColorHint="#00000000"        android:divider="#19000000"        android:dividerHeight="4dp"        android:fadingEdge="none"        android:fastScrollEnabled="false"        android:footerDividersEnabled="false"        android:headerDividersEnabled="false"        android:smoothScrollbar="true"        ptr:ptrDrawable="@drawable/ic_launcher"        ptr:ptrMode="both" /></LinearLayout>

import java.util.ArrayList;import java.util.List;import android.app.Activity;import android.os.AsyncTask;import android.os.Bundle;import android.widget.ArrayAdapter;import android.widget.ListView;import android.widget.Toast;import com.handmark.pulltorefresh.library.PullToRefreshBase;import com.handmark.pulltorefresh.library.PullToRefreshBase.OnLastItemVisibleListener;import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;import com.handmark.pulltorefresh.library.PullToRefreshListView;/** * MainActivity---利用第三方下拉刷新控件实现 * @author seabear * */public class MainActivity extends Activity {private PullToRefreshListView mPullToRefreshListView;private List<String> mArrayList = new ArrayList<String>();private ArrayAdapter<String> mArrayAdapter;private int mNums = 0;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mPullToRefreshListView = (PullToRefreshListView)this.findViewById(R.id.pull_refresh_list);mArrayAdapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, mArrayList);mPullToRefreshListView.setAdapter(mArrayAdapter);mPullToRefreshListView.setOnRefreshListener(new OnRefreshListener<ListView>() {@Overridepublic void onRefresh(PullToRefreshBase<ListView> refreshView) {// TODO Auto-generated method stubnew GetDataTask().execute();}});}private class GetDataTask extends AsyncTask<Void, Void, String>{@Overrideprotected String doInBackground(Void... params) {// Simulates a background job.mNums++;try {Thread.sleep(2000);} catch (InterruptedException e) {}return "第" + String.valueOf(mNums) + "行";}@Overrideprotected void onPostExecute(String result) {mArrayList.add(result);mArrayAdapter.notifyDataSetChanged();// Call onRefreshComplete when the list has been refreshed.mPullToRefreshListView.onRefreshComplete();super.onPostExecute(result);}}}