Android 自定义ListView实现底部分页刷新与顶部下拉刷新

在项目开发中，由于数据过大时，需要进行分页加载或下拉刷新，来缓解一次性加载的过长等待。本篇博文实例讲解通过自定义的ListView实现底部分页加载和顶部下拉刷新的效果。

其效果图：

一.ListView 底部分页加载

整个底部分页加载，主要分一下几步：

1.加载底部自定义View;

2.响应OnScrollListener监听事件，onScroll方法记录最后可见的View Item以及整个totalItemCount。当onScrollStateChanged状态改变时，

当滑动到底端，并滑动状态为 SCROLL_STATE_IDLE,显示底部加载View,开始实现自定义加载接口;

3.当数据加载完成时，隐藏底部下拉View.

自定义底部下拉加载PaginationListView代码如下：

<span style="font-family:KaiTi_GB2312;font-size:18px;">package com.example.paginationrefreshlistdemo.listview;import android.content.Context;import android.util.AttributeSet;import android.view.LayoutInflater;import android.view.View;import android.widget.AbsListView;import android.widget.AbsListView.OnScrollListener;import android.widget.ListView;import com.example.paginationrefreshlistdemo.R;public class PaginationListView extends ListView implements OnScrollListener{//底部Viewprivate View footerView;//ListView item个数int totalItemCount = 0;//最后可见的Itemint lastVisibleItem = 0;//是否加载标示boolean isLoading = false;public PaginationListView(Context context) {super(context);initView(context);}public PaginationListView(Context context, AttributeSet attrs) {super(context, attrs);initView(context);}public PaginationListView(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);initView(context);}/** * 初始化ListView */private void initView(Context context){LayoutInflater mInflater = LayoutInflater.from(context);footerView = mInflater.inflate(R.layout.footer, null);footerView.setVisibility(View.GONE);this.setOnScrollListener(this);//添加底部Viewthis.addFooterView(footerView);}@Overridepublic void onScrollStateChanged(AbsListView view, int scrollState) {//当滑动到底端，并滑动状态为 not scrollingif(lastVisibleItem == totalItemCount && scrollState == SCROLL_STATE_IDLE){if(!isLoading){isLoading = true;//设置可见footerView.setVisibility(View.VISIBLE);//加载数据onLoadListener.onLoad();}}}@Overridepublic void onScroll(AbsListView view, int firstVisibleItem,int visibleItemCount, int totalItemCount) {this.lastVisibleItem = firstVisibleItem + visibleItemCount;this.totalItemCount = totalItemCount;}private OnLoadListener onLoadListener;public void setOnLoadListener(OnLoadListener onLoadListener){this.onLoadListener = onLoadListener;}/** * 加载数据接口 * @author Administrator * */public interface OnLoadListener{void onLoad();}/** * 数据加载完成 */public void loadComplete(){footerView.setVisibility(View.GONE);isLoading = false;this.invalidate();}}</span>

底部下拉加载布局footer.xml

<span style="font-family:KaiTi_GB2312;font-size:18px;"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/footer_ll"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:gravity="center"    android:orientation="horizontal" >    <ProgressBar        android:id="@+id/progress"        style="?android:attr/progressBarStyleSmall"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginBottom="30dp"        android:layout_marginTop="30dp" />    <TextView        android:id="@+id/tv"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginLeft="20dp"        android:text="正在加载..."        android:textColor="#FF0000" /></LinearLayout></span>

二.ListView顶部下拉刷新

数据顶部下拉刷新的步骤如下：

1.加载顶部自定义View,通过设置View的边距来显示和隐藏View；

2.通过OnScrollListener监听事件，获取ListView的活动状态以及firstVisibleItem首位可见的Item；

3.通过OnTouchListener监听事件，通过判断是否在首位，以及处理ACTION_DOWN,ACTION_MOVE,ACTION_UP

各个状态事件,并记录none（正常）,pull（下拉），release（释放），reflashing（刷新）等状态。

ACTION_DOWN:判断是否在首列，若是，记录该点位置startY;

ACTION_MOVE:记录移动后的tempY，获取间距space,与View的高度比较后，动态获取View上边距，并设置。

ACTION_UP:记录为reflashing状态，刷新数据

4.刷新完成后，还原各自所处状态，隐藏View。

顶部下拉刷新自定义ReflashListVIew

<span style="font-family:KaiTi_GB2312;font-size:18px;">package com.example.paginationrefreshlistdemo.listview;import java.text.SimpleDateFormat;import java.util.Date;import android.annotation.SuppressLint;import android.content.Context;import android.util.AttributeSet;import android.view.LayoutInflater;import android.view.MotionEvent;import android.view.View;import android.view.ViewGroup;import android.view.animation.RotateAnimation;import android.widget.AbsListView;import android.widget.ImageView;import android.widget.ProgressBar;import android.widget.TextView;import android.widget.AbsListView.OnScrollListener;import android.widget.ListView;import com.example.paginationrefreshlistdemo.R;public class RefreshListView extends ListView implements OnScrollListener{//顶部Viewprivate View topView;//第一个可见Viewint firstVisibleItem;//顶部View的高度int headerHeight;// listview 当前滚动状态；int scrollState;// 标记，当前是在listview最顶端摁下的；boolean isRefresh;// 摁下时的Y值；int startY;int state;// 当前的状态；final int NONE = 0;// 正常状态；final int PULL = 1;// 提示下拉状态；final int RELESE = 2;// 提示释放状态；final int REFLASHING = 3;// 刷新状态；public RefreshListView(Context context) {super(context);initView(context);}public RefreshListView(Context context, AttributeSet attrs) {super(context, attrs);initView(context);}public RefreshListView(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);initView(context);}/** * 初始化ListView */private void initView(Context context){LayoutInflater mInflater = LayoutInflater.from(context);topView = mInflater.inflate(R.layout.top, null);measureView(topView);headerHeight = topView.getMeasuredHeight();//初始状态设置隐藏topPadding(-headerHeight);this.setOnScrollListener(this);this.addHeaderView(topView);}@Overridepublic void onScrollStateChanged(AbsListView view, int scrollState) {//当滑动到底端，并滑动状态为 not scrollingthis.scrollState = scrollState;}/** * 通知父布局，占用的宽，高； *  * @param view */private void measureView(View view) {ViewGroup.LayoutParams p = view.getLayoutParams();if (p == null) {p = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.WRAP_CONTENT);}int width = ViewGroup.getChildMeasureSpec(0, 0, p.width);int height;int tempHeight = p.height;if (tempHeight > 0) {height = MeasureSpec.makeMeasureSpec(tempHeight,MeasureSpec.EXACTLY);} else {height = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);}view.measure(width, height);}/** * 设置header 布局 上边距； *  * @param topPadding */private void topPadding(int topPadding) {topView.setPadding(topView.getPaddingLeft(), topPadding,topView.getPaddingRight(), topView.getPaddingBottom());topView.invalidate();}@Overridepublic void onScroll(AbsListView view, int firstVisibleItem,int visibleItemCount, int totalItemCount) {this.firstVisibleItem = firstVisibleItem ;}@Overridepublic boolean onTouchEvent(MotionEvent ev) {// TODO Auto-generated method stubswitch (ev.getAction()) {//往下case MotionEvent.ACTION_DOWN:if (firstVisibleItem == 0) {isRefresh = true;startY = (int) ev.getY();}break;//移动case MotionEvent.ACTION_MOVE:onMove(ev);break;//向上case MotionEvent.ACTION_UP:if (state == RELESE) {state = REFLASHING;// 加载最新数据；reflashViewByState();onRefreshListener.onRefresh();} else if (state == PULL) {state = NONE;isRefresh = false;reflashViewByState();}break;}return super.onTouchEvent(ev);}/** * 判断移动过程操作； *  * @param ev */private void onMove(MotionEvent ev) {if (!isRefresh) {return;}int tempY = (int) ev.getY();int space = tempY - startY;int topPadding = space - headerHeight;switch (state) {case NONE:if (space > 0) {state = PULL;reflashViewByState();}break;case PULL:topPadding(topPadding);if (space > headerHeight + 30&& scrollState == SCROLL_STATE_TOUCH_SCROLL) {state = RELESE;reflashViewByState();}break;case RELESE:topPadding(topPadding);if (space < headerHeight + 30) {state = PULL;reflashViewByState();} else if (space <= 0) {state = NONE;isRefresh = false;reflashViewByState();}break;}}/** * 根据当前状态，改变界面显示； */private void reflashViewByState() {TextView tip = (TextView) topView.findViewById(R.id.tip);ImageView arrow = (ImageView) topView.findViewById(R.id.arrow);ProgressBar progress = (ProgressBar) topView.findViewById(R.id.progress_refresh);RotateAnimation anim = new RotateAnimation(0, 180,RotateAnimation.RELATIVE_TO_SELF, 0.5f,RotateAnimation.RELATIVE_TO_SELF, 0.5f);anim.setDuration(500);anim.setFillAfter(true);RotateAnimation anim1 = new RotateAnimation(180, 0,RotateAnimation.RELATIVE_TO_SELF, 0.5f,RotateAnimation.RELATIVE_TO_SELF, 0.5f);anim1.setDuration(500);anim1.setFillAfter(true);switch (state) {case NONE:arrow.clearAnimation();topPadding(-headerHeight);break;case PULL:arrow.setVisibility(View.VISIBLE);progress.setVisibility(View.GONE);tip.setText("下拉可以刷新！");arrow.clearAnimation();arrow.setAnimation(anim1);break;case RELESE:arrow.setVisibility(View.VISIBLE);progress.setVisibility(View.GONE);tip.setText("松开可以刷新！");arrow.clearAnimation();arrow.setAnimation(anim);break;case REFLASHING:topPadding(50);arrow.setVisibility(View.GONE);progress.setVisibility(View.VISIBLE);tip.setText("正在刷新...");arrow.clearAnimation();break;}}private OnRefreshListener onRefreshListener;public void setOnRefreshListener(OnRefreshListener onRefreshListener){this.onRefreshListener = onRefreshListener;}/** * 加载数据接口 * @author Administrator * */public interface OnRefreshListener{void onRefresh();}/** * 数据加载完成 */@SuppressLint("SimpleDateFormat")public void refreshComplete(){state = NONE;isRefresh = false;reflashViewByState();TextView lastupdatetime = (TextView) topView.findViewById(R.id.lastupdate_time);SimpleDateFormat format = new SimpleDateFormat("yyyy年MM月dd日 hh:mm:ss");Date date = new Date(System.currentTimeMillis());String time = format.format(date);lastupdatetime.setText(time);}}</span>

顶部下拉刷新布局top.xml

<span style="font-family:KaiTi_GB2312;font-size:18px;"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:orientation="vertical" >    <RelativeLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:paddingBottom="10dip"        android:paddingTop="10dip" >        <LinearLayout            android:id="@+id/layout"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_centerInParent="true"            android:gravity="center"            android:orientation="vertical" >            <TextView                android:id="@+id/tip"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="下拉可以刷新！" />            <TextView                android:id="@+id/lastupdate_time"                android:layout_width="wrap_content"                android:layout_height="wrap_content" />        </LinearLayout>        <ImageView            android:id="@+id/arrow"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_toLeftOf="@id/layout"            android:layout_marginRight="20dip"            android:src="@drawable/pull" />        <ProgressBar            android:id="@+id/progress_refresh"            style="?android:attr/progressBarStyleSmall"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_toLeftOf="@id/layout"            android:layout_marginRight="20dip"            android:visibility="gone" />    </RelativeLayout></LinearLayout></span>

三.其他文件代码

1.主布局activity_main.xml

<span style="font-family:KaiTi_GB2312;font-size:18px;"><LinearLayout 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:orientation="vertical"   >    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="ListView底部分页刷新和顶部下拉刷新"         android:gravity="center"        android:textSize="18sp"        android:textColor="#FF0000"        android:layout_marginBottom="20dp"    android:layout_marginTop="20dp"/>        <ListView         android:id="@+id/main_lv"        android:layout_width="match_parent"        android:layout_height="match_parent"        ></ListView></LinearLayout></span>

2.底部分页布局activity_pagination.xml

<span style="font-family:KaiTi_GB2312;font-size:18px;"><LinearLayout 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:orientation="vertical"   >    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="ListView底部分页刷新"         android:gravity="center"        android:textSize="18sp"        android:textColor="#FF0000"        android:layout_marginBottom="20dp"        android:layout_marginTop="20dp"/>        <com.example.paginationrefreshlistdemo.listview.PaginationListView         android:id="@+id/pagination_lv"        android:layout_width="match_parent"        android:layout_height="match_parent"        /></LinearLayout></span>

3.顶部下拉刷新activity_refresh.xml

<span style="font-family:KaiTi_GB2312;font-size:18px;"><LinearLayout 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:orientation="vertical"   >    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="ListView底部分页刷新"         android:gravity="center"        android:textSize="18sp"        android:textColor="#FF0000"        android:layout_marginBottom="20dp"        android:layout_marginTop="20dp"/>        <com.example.paginationrefreshlistdemo.listview.PaginationListView         android:id="@+id/pagination_lv"        android:layout_width="match_parent"        android:layout_height="match_parent"        /></LinearLayout></span>

4.Adapter加载布局list_view.xml

<span style="font-family:KaiTi_GB2312;font-size:18px;"><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" >    <LinearLayout        android:id="@+id/content_ll"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerInParent="true"        android:layout_marginLeft="20dp"        android:gravity="center"        android:orientation="vertical" >        <TextView            android:id="@+id/content_tv"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="亲亲，来一下"            android:textColor="#FF0000" />        <TextView            android:id="@+id/date_tv"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textColor="#00FF00" />    </LinearLayout>    <ImageView        android:id="@+id/iv"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerVertical="true"        android:layout_toLeftOf="@id/content_ll"        android:src="@drawable/emotion" /></RelativeLayout></span>

5.实体ApkBean

<span style="font-family:KaiTi_GB2312;font-size:18px;">package com.example.paginationrefreshlistdemo.bean;public class ApkBean {private String content;private String dateString;/** * @return the content */public String getContent() {return content;}/** * @param content the content to set */public void setContent(String content) {this.content = content;}/** * @return the dateString */public String getDateString() {return dateString;}/** * @param dateString the dateString to set */public void setDateString(String dateString) {this.dateString = dateString;}}</span>

6.适配器DemoAdapter

<span style="font-family:KaiTi_GB2312;font-size:18px;">package com.example.paginationrefreshlistdemo.adapter;import java.util.List;import com.example.paginationrefreshlistdemo.R;import com.example.paginationrefreshlistdemo.bean.ApkBean;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.TextView;public class DemoAdapter extends BaseAdapter {private List<ApkBean> datas ;private LayoutInflater mInfalter;public DemoAdapter(Context context,List<ApkBean> datas){this.datas = datas;this.mInfalter = LayoutInflater.from(context);}public void updateView( List<ApkBean> datas ){this.datas = datas;this.notifyDataSetChanged();}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn datas.size();}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn datas.get(position);}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {// TODO Auto-generated method stubHolderView holderView;if(convertView == null){holderView = new HolderView();convertView = mInfalter.inflate(R.layout.list_view_main, null);holderView.contentTv = (TextView) convertView.findViewById(R.id.content_tv);holderView.dateTv = (TextView) convertView.findViewById(R.id.date_tv);convertView.setTag(holderView);}else{holderView =(HolderView) convertView.getTag();}holderView.contentTv.setText(datas.get(position).getContent());if(datas.get(position).getDateString() == null){holderView.dateTv.setVisibility(View.GONE);}else{holderView.dateTv.setVisibility(View.VISIBLE);holderView.dateTv.setText(datas.get(position).getDateString());}return convertView;}public class HolderView{ImageView iv;TextView contentTv,dateTv;}}</span>

7.主函数MainActivity.java,一个ListView中包含底部下拉加载和顶部下拉刷新数据。

<span style="font-family:KaiTi_GB2312;font-size:18px;">package com.example.paginationrefreshlistdemo.activity;import java.util.ArrayList;import java.util.List;import com.example.paginationrefreshlistdemo.R;import com.example.paginationrefreshlistdemo.adapter.DemoAdapter;import com.example.paginationrefreshlistdemo.bean.ApkBean;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.ListView;public class MainActivity extends Activity {private ListView mainLv;private DemoAdapter demoAdapter;private List<ApkBean> datas = new ArrayList<ApkBean>();@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initData();mainLv =(ListView) this.findViewById(R.id.main_lv);mainLv.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {switch (position) {case 0:startActvity(PaginationActivity.class);break;case 1:startActvity(RefreshActivity.class);break;}}});showView();}private void startActvity(Class<?> clz){Intent intent = new Intent();intent.setClass(this, clz);this.startActivity(intent);}private void initData(){ApkBean apkBean = new ApkBean();apkBean.setContent("ListView分页刷新");ApkBean apkBean2 = new ApkBean();apkBean2.setContent("ListView下拉刷新");datas.add(apkBean);datas.add(apkBean2);}private void showView(){if(demoAdapter == null){demoAdapter = new DemoAdapter(this, datas);mainLv.setAdapter(demoAdapter);}else{demoAdapter.updateView(datas);}}}</span>

8.分页加载PaginationActivity.java,使用PaginationListView

<span style="font-family:KaiTi_GB2312;font-size:18px;">package com.example.paginationrefreshlistdemo.activity;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Date;import java.util.List;import com.example.paginationrefreshlistdemo.R;import com.example.paginationrefreshlistdemo.adapter.DemoAdapter;import com.example.paginationrefreshlistdemo.bean.ApkBean;import com.example.paginationrefreshlistdemo.listview.PaginationListView;import com.example.paginationrefreshlistdemo.listview.PaginationListView.OnLoadListener;import android.annotation.SuppressLint;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;public class PaginationActivity extends Activity implements OnLoadListener {private PaginationListView paginationLv;private DemoAdapter paginationAdapter;private List<ApkBean> datas = new ArrayList<ApkBean>();@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_pagination);initData();paginationLv = (PaginationListView) this.findViewById(R.id.pagination_lv);paginationLv.setOnLoadListener(this);paginationLv.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {}});showView();}@SuppressLint("SimpleDateFormat")private void initData() {ApkBean apkBean;String dateString;long dateLong = new Date().getTime();for (int i = 0; i < 20; i++) {apkBean = new ApkBean();apkBean.setContent("这是一个美好的夜晚    " + i);dateLong = dateLong + i * 1000 * 6;dateString = new SimpleDateFormat("yyyy-MM-dd HHmmss").format(new Date(dateLong));apkBean.setDateString(dateString);datas.add(apkBean);}}/** * 加载适配器 */private void showView() {if (paginationAdapter == null) {paginationAdapter = new DemoAdapter(this, datas);paginationLv.setAdapter(paginationAdapter);} else {paginationAdapter.updateView(datas);}}@Overridepublic void onLoad() {// 为了显示效果，采用延迟加载new Handler().postDelayed(new Runnable() {@Overridepublic void run() {// TODO Auto-generated method stubinitLoadData();showView();paginationLv.loadComplete();}}, 3000);}@SuppressLint("SimpleDateFormat")private void initLoadData() {ApkBean apkBean;String dateString;long dateLong = new Date().getTime();for (int i = 0; i < 20; i++) {apkBean = new ApkBean();apkBean.setContent("这是一个新的开始    " + i);dateLong = dateLong + i * 1000 * 6 * 60;dateString = new SimpleDateFormat("yyyy-MM-dd HHmmss").format(new Date(dateLong));apkBean.setDateString(dateString);datas.add(apkBean);}}}</span>

9.顶部刷新RefreshActivity.java，使用自定义RefreshListView

<span style="font-family:KaiTi_GB2312;font-size:18px;">package com.example.paginationrefreshlistdemo.activity;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Date;import java.util.List;import com.example.paginationrefreshlistdemo.R;import com.example.paginationrefreshlistdemo.adapter.DemoAdapter;import com.example.paginationrefreshlistdemo.bean.ApkBean;import com.example.paginationrefreshlistdemo.listview.RefreshListView;import com.example.paginationrefreshlistdemo.listview.RefreshListView.OnRefreshListener;import android.annotation.SuppressLint;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;public class RefreshActivity extends Activity implements OnRefreshListener{private RefreshListView refreshLv;private DemoAdapter refreshAdapter;private List<ApkBean> datas = new ArrayList<ApkBean>();@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_refresh);initData();refreshLv =(RefreshListView) this.findViewById(R.id.refresh_lv);refreshLv.setOnRefreshListener(this);refreshLv.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {}});showView();}@SuppressLint("SimpleDateFormat")private void initData(){ApkBean apkBean;String dateString;long dateLong = new Date().getTime();for (int i = 0; i < 20; i++) {apkBean = new ApkBean();apkBean.setContent("这是一个刷新的早晨      " + i);dateLong = dateLong + i * 1000 * 6;dateString = new SimpleDateFormat("yyyy-MM-dd HHmmss").format(new Date(dateLong));apkBean.setDateString(dateString);datas.add(apkBean);}}private void showView(){if(refreshAdapter == null){refreshAdapter = new DemoAdapter(this, datas);refreshLv.setAdapter(refreshAdapter);}else{refreshAdapter.updateView(datas);}}@Overridepublic void onRefresh() {new Handler().postDelayed(new Runnable() {@Overridepublic void run() {initLoadData();refreshAdapter.updateView(datas);refreshLv.refreshComplete();}}, 3000);}@SuppressLint("SimpleDateFormat")private void initLoadData() {ApkBean apkBean;String dateString;long dateLong = new Date().getTime();for (int i = 0; i < 5; i++) {apkBean = new ApkBean();apkBean.setContent("刷新新的的数据  " + i);dateLong = dateLong + i * 1000 * 6 * 60;dateString = new SimpleDateFormat("yyyy-MM-dd HHmmss").format(new Date(dateLong));apkBean.setDateString(dateString);datas.add(apkBean);}}}</span>

以上就是本文所有内容。

源码下载地址：http://download.csdn.net/detail/a123demi/8147253