Android带刷新时间显示的PullToRefresh上下拉刷新

用过很多上下拉刷新，找到一个让自己满意的确实不容易，有些好的刷新控件，也并不是公司所需要的，在这里我给大家推荐一下我所喜欢的上下拉控件，实现也挺简单，需要的不妨来用一下，效果一看便知

 

加载就是一个圆形进度条，一个正在加载textview,我就不上图了

这个是刷新的头布局

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:orientation="horizontal" >

 <framelayout
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_margin="10dip" >

 <imageview
  android:id="@+id/iv_listview_header_arrow"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center"
  android:minwidth="30dip"
  android:src="@mipmap/ic_launcher" />

 <progressbar
  android:id="@+id/pb_listview_header"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center"
  android:indeterminatedrawable="@drawable/common_progressbar"
  android:visibility="gone" />
 </framelayout>

 <linearlayout
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:layout_gravity="center_vertical"
 android:gravity="center_horizontal"
 android:orientation="vertical" >

 <textview
  android:id="@+id/tv_listview_header_state"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="下拉刷新"
  android:textcolor="#ff0000"
  android:textsize="18sp" />

 <textview
  android:id="@+id/tv_listview_header_last_update_time"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_margintop="5dip"
  android:text="最后刷新时间: 2014-10-10 12:56:12"
  android:textsize="14sp" />
 </linearlayout>

</linearlayout>

这个是加载的底部局

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:orientation="vertical" >

 <linearlayout
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_gravity="center_horizontal"
 android:layout_margin="10dip"
 android:gravity="center_vertical"
 android:orientation="horizontal" >

 <progressbar
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center"
  android:indeterminatedrawable="@drawable/common_progressbar" />

 <textview
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_marginleft="10dip"
  android:text="加载更多..."
  android:textcolor="#ff0000"
  android:textsize="18sp" />
 </linearlayout>

</linearlayout>

下面是运行布局嵌套的listview布局，如果使用请换一下包名

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.constraintlayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 tools:context="jiexinkeji.com.shuaxin.mainactivity">
 <jiexinkeji.com.shuaxin.refreshlistview
 android:id="@+id/refreshlistview"
 android:layout_width="match_parent"
 android:layout_height="match_parent"></jiexinkeji.com.shuaxin.refreshlistview>

</android.support.constraint.constraintlayout>

下面是在drawable文件夹下面创建的一个文件：

<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
 android:fromdegrees="0"
 android:pivotx="50%"
 android:pivoty="50%"
 android:todegrees="360" >

 <shape
 android:innerradiusratio="3"
 android:shape="ring"
 android:uselevel="false" >
 <gradient
  android:centercolor="#ff6666"
  android:endcolor="#ff0000"
  android:startcolor="#ffffff"
  android:type="sweep" />
 </shape>

</rotate>

这个是定义的一个接口，有刷新和加载两个方法

package jiexinkeji.com.shuaxin;

public interface onrefreshlistener {

 /**
 * 下拉刷新
 */
 void ondownpullrefresh();

 /**
 * 上拉加载更多
 */
 void onloadingmore();
}

下面的类是继承自listview,来实现下拉刷新上啦加载

package jiexinkeji.com.shuaxin;

import android.content.context;
import android.support.v4.widget.swiperefreshlayout;
import android.util.attributeset;
import android.util.log;
import android.view.motionevent;
import android.view.view;
import android.view.animation.animation;
import android.view.animation.rotateanimation;
import android.widget.abslistview;
import android.widget.imageview;
import android.widget.listview;
import android.widget.progressbar;
import android.widget.textview;

import java.text.simpledateformat;

public class refreshlistview extends listview implements abslistview.onscrolllistener {

 private static final string tag = "refreshlistview";
 private int firstvisibleitemposition; // 屏幕显示在第一个的item的索引
 private int downy; // 按下时y轴的偏移量
 private int headerviewheight; // 头布局的高度
 private view headerview; // 头布局的对象

 private final int down_pull_refresh = 0; // 下拉刷新状态
 private final int release_refresh = 1; // 松开刷新
 private final int refreshing = 2; // 正在刷新中
 private int currentstate = down_pull_refresh; // 头布局的状态: 默认为下拉刷新状态

 private animation upanimation; // 向上旋转的动画
 private animation downanimation; // 向下旋转的动画

 private imageview ivarrow; // 头布局的剪头
 private progressbar mprogressbar; // 头布局的进度条
 private textview tvstate; // 头布局的状态
 private textview tvlastupdatetime; // 头布局的最后更新时间

 private onrefreshlistener monrefershlistener;
 private boolean isscrolltobottom; // 是否滑动到底部
 private view footerview; // 脚布局的对象
 private int footerviewheight; // 脚布局的高度
 private boolean isloadingmore = false; // 是否正在加载更多中

 public refreshlistview(context context, attributeset attrs) {
 super(context, attrs);
 initheaderview();
 initfooterview();
 this.setonscrolllistener(this);
 }

 /**
 * 初始化脚布局
 */
 private void initfooterview() {
 footerview = view.inflate(getcontext(), r.layout.listview_footer, null);
 footerview.measure(0, 0);
 footerviewheight = footerview.getmeasuredheight();
 footerview.setpadding(0, -footerviewheight, 0, 0);
 this.addfooterview(footerview);
 }

 /**
 * 初始化头布局
 */
 private void initheaderview() {
 headerview = view.inflate(getcontext(), r.layout.listview_header, null);
 ivarrow = (imageview) headerview
  .findviewbyid(r.id.iv_listview_header_arrow);
 mprogressbar = (progressbar) headerview
  .findviewbyid(r.id.pb_listview_header);
 tvstate = (textview) headerview
  .findviewbyid(r.id.tv_listview_header_state);
 tvlastupdatetime = (textview) headerview
  .findviewbyid(r.id.tv_listview_header_last_update_time);

 // 设置最后刷新时间
 tvlastupdatetime.settext("最后刷新时间: " + getlastupdatetime());

 headerview.measure(0, 0); // 系统会帮我们测量出headerview的高度
 headerviewheight = headerview.getmeasuredheight();
 headerview.setpadding(0, -headerviewheight, 0, 0);
 this.addheaderview(headerview); // 向listview的顶部添加一个view对象
 initanimation();
 }

 /**
 * 获得系统的最新时间
 *
 * @return
 */
 private string getlastupdatetime() {
 simpledateformat sdf = new simpledateformat("yyyy-mm-dd hh:mm:ss");
 return sdf.format(system.currenttimemillis());
 }

 /**
 * 初始化动画
 */
 private void initanimation() {
 upanimation = new rotateanimation(0f, -180f,
  animation.relative_to_self, 0.5f, animation.relative_to_self,
  0.5f);
 upanimation.setduration(500);
 upanimation.setfillafter(true); // 动画结束后, 停留在结束的位置上

 downanimation = new rotateanimation(-180f, -360f,
  animation.relative_to_self, 0.5f, animation.relative_to_self,
  0.5f);
 downanimation.setduration(500);
 downanimation.setfillafter(true); // 动画结束后, 停留在结束的位置上
 }

 @override
 public boolean ontouchevent(motionevent ev) {
 switch (ev.getaction()) {
  case motionevent.action_down :
  downy = (int) ev.gety();
  break;
  case motionevent.action_move :
  int movey = (int) ev.gety();
  // 移动中的y - 按下的y = 间距.
  int diff = (movey - downy) / 2;
  // -头布局的高度 + 间距 = paddingtop
  int paddingtop = -headerviewheight + diff;
  // 如果: -头布局的高度 > paddingtop的值 执行super.ontouchevent(ev);
  if (firstvisibleitemposition == 0
   && -headerviewheight < paddingtop) {
   if (paddingtop > 0 && currentstate == down_pull_refresh) { // 完全显示了.
   log.i(tag, "松开刷新");
   currentstate = release_refresh;
   refreshheaderview();
   } else if (paddingtop < 0
    && currentstate == release_refresh) { // 没有显示完全
   log.i(tag, "下拉刷新");
   currentstate = down_pull_refresh;
   refreshheaderview();
   }
   // 下拉头布局
   headerview.setpadding(0, paddingtop, 0, 0);
   return true;
  }
  break;
  case motionevent.action_up :
  // 判断当前的状态是松开刷新还是下拉刷新
  if (currentstate == release_refresh) {
   log.i(tag, "刷新数据.");
   // 把头布局设置为完全显示状态
   headerview.setpadding(0, 0, 0, 0);
   // 进入到正在刷新中状态
   currentstate = refreshing;
   refreshheaderview();

   if (monrefershlistener != null) {
   monrefershlistener.ondownpullrefresh(); // 调用使用者的监听方法
   }
  } else if (currentstate == down_pull_refresh) {
   // 隐藏头布局
   headerview.setpadding(0, -headerviewheight, 0, 0);
  }
  break;
  default :
  break;
 }
 return super.ontouchevent(ev);
 }

 /**
 * 根据currentstate刷新头布局的状态
 */
 private void refreshheaderview() {
 switch (currentstate) {
  case down_pull_refresh : // 下拉刷新状态
  tvstate.settext("下拉刷新");
  ivarrow.startanimation(downanimation); // 执行向下旋转
  break;
  case release_refresh : // 松开刷新状态
  tvstate.settext("松开刷新");
  ivarrow.startanimation(upanimation); // 执行向上旋转
  break;
  case refreshing : // 正在刷新中状态
  ivarrow.clearanimation();
  ivarrow.setvisibility(view.gone);
  mprogressbar.setvisibility(view.visible);
  tvstate.settext("正在刷新中...");
  break;
  default :
  break;
 }
 }

 /**
 * 当滚动状态改变时回调
 */
 @override
 public void onscrollstatechanged(abslistview view, int scrollstate) {

 if (scrollstate == scroll_state_idle
  || scrollstate == scroll_state_fling) {
  // 判断当前是否已经到了底部
  if (isscrolltobottom && !isloadingmore) {
  isloadingmore = true;
  // 当前到底部
  log.i(tag, "加载更多数据");
  footerview.setpadding(0, 0, 0, 0);
  this.setselection(this.getcount());

  if (monrefershlistener != null) {
   monrefershlistener.onloadingmore();
  }
  }
 }
 }

 /**
 * 当滚动时调用
 *
 * @param firstvisibleitem
 *  当前屏幕显示在顶部的item的position
 * @param visibleitemcount
 *  当前屏幕显示了多少个条目的总数
 * @param totalitemcount
 *  listview的总条目的总数
 */
 @override
 public void onscroll(abslistview view, int firstvisibleitem,
    int visibleitemcount, int totalitemcount) {
 firstvisibleitemposition = firstvisibleitem;

 if (getlastvisibleposition() == (totalitemcount - 1)) {
  isscrolltobottom = true;
 } else {
  isscrolltobottom = false;
 }
 }

 /**
 * 设置刷新监听事件
 *
 * @param listener
 */
 public void setonrefreshlistener(onrefreshlistener listener) {
 monrefershlistener = listener;
 }

 /**
 * 隐藏头布局
 */
 public void hideheaderview() {
 headerview.setpadding(0, -headerviewheight, 0, 0);
 ivarrow.setvisibility(view.visible);
 mprogressbar.setvisibility(view.gone);
 tvstate.settext("下拉刷新");
 tvlastupdatetime.settext("最后刷新时间: " + getlastupdatetime());
 currentstate = down_pull_refresh;
 }

 /**
 * 隐藏脚布局
 */
 public void hidefooterview() {
 footerview.setpadding(0, -footerviewheight, 0, 0);
 isloadingmore = false;
 }
}

接下来再运行主activity使用就行了

package jiexinkeji.com.shuaxin;

import android.app.activity;
import android.graphics.color;
import android.os.asynctask;
import android.os.bundle;
import android.os.systemclock;
import android.view.view;
import android.view.viewgroup;
import android.widget.baseadapter;
import android.widget.textview;

import java.util.arraylist;
import java.util.list;

public class mainactivity extends activity implements onrefreshlistener {

 private list<string> textlist;
 private myadapter adapter;
 private refreshlistview rlistview;

 @override
 protected void oncreate(bundle savedinstancestate) {
 super.oncreate(savedinstancestate);
 setcontentview(r.layout.activity_main);

 rlistview = (refreshlistview) findviewbyid(r.id.refreshlistview);
 textlist = new arraylist<string>();
 for (int i = 0; i < 25; i++) {
  textlist.add("这是一条listview的数据" + i);
 }
 adapter = new myadapter();
 rlistview.setadapter(adapter);
 rlistview.setonrefreshlistener(this);
 }

 private class myadapter extends baseadapter {

 @override
 public int getcount() {
  // todo auto-generated method stub
  return textlist.size();
 }

 @override
 public object getitem(int position) {
  // todo auto-generated method stub
  return textlist.get(position);
 }

 @override
 public long getitemid(int position) {
  // todo auto-generated method stub
  return position;
 }

 @override
 public view getview(int position, view convertview, viewgroup parent) {
  // todo auto-generated method stub
  textview textview = new textview(mainactivity.this);
  textview.settext(textlist.get(position));
  textview.settextsize(18.0f);
  return textview;
 }

 }

 @override
 public void ondownpullrefresh() {
 new asynctask<void, void, void>() {

  @override
  protected void doinbackground(void... params) {
  systemclock.sleep(2000);
  for (int i = 0; i < 2; i++) {
   textlist.add(0, "这是下拉刷新出来的数据" + i);
  }
  return null;
  }

  @override
  protected void onpostexecute(void result) {
  adapter.notifydatasetchanged();
  rlistview.hideheaderview();
  }
 }.execute(new void[]{});
 }

 @override
 public void onloadingmore() {
 new asynctask<void, void, void>() {

  @override
  protected void doinbackground(void... params) {
  systemclock.sleep(5000);

  textlist.add("这是加载更多出来的数据1");
  textlist.add("这是加载更多出来的数据2");
  textlist.add("这是加载更多出来的数据3");
  return null;
  }

  @override
  protected void onpostexecute(void result) {
  adapter.notifydatasetchanged();

  // 控制脚布局隐藏
  rlistview.hidefooterview();
  }
 }.execute(new void[]{});
 }

}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。