iscroll实现下拉刷新功能

本文实例为大家分享了Android九宫格图片展示的具体代码，供大家参考，具体内容如下

版本号：iscroll4.2.5.js

iscroll 版本很有关系 在线： demo链接 有出现白屏的bug,将iscroll版本改成iscroll4.2.5就可以了

html

rush:xhtml;"> <Meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <Meta name="viewport" content="width=device-width,initial-scale=1.0,user-scalable=0,minimum-scale=1.0,maximum-scale=1.0"> <Meta name="apple-mobile-web-app-capable" content="yes"> <Meta name="apple-mobile-web-app-status-bar-style" content="black">

<script type="text/javascript" src="../../src/iscroll.js">

<script type="text/javascript">

var myScroll,pullDownEl,pullDownOffset,pullUpEl,pullUpOffset,generatedCount = 0;

function pullDownAction () {
setTimeout(function () { // <-- Simulate network congestion,remove setTimeout from production!
var el,li,i;
el = document.getElementById('thelist');

for (i=0; i<3; i++) {
  li = document.createElement('li');
  li.innerText = 'Generated row ' + (++generatedCount);
  el.insertBefore(li,el.childNodes[0]);
}

myScroll.refresh();    // Remember to refresh when contents are loaded (ie: on ajax completion)

},1000); // <-- Simulate network congestion,remove setTimeout from production!
}

function pullUpAction () {
setTimeout(function () { // <-- Simulate network congestion,i;
el = document.getElementById('thelist');

for (i=0; i<3; i++) {
  li = document.createElement('li');
  li.innerText = 'Generated row ' + (++generatedCount);
  el.appendChild(li,remove setTimeout from production!

}

function loaded() {
pullDownEl = document.getElementById('pullDown');
pullDownOffset = pullDownEl.offsetHeight;
pullUpEl = document.getElementById('pullUp');
pullUpOffset = pullUpEl.offsetHeight;

myScroll = new iScroll('wrapper',{
useTransition: true,topOffset: pullDownOffset,onRefresh: function () {
if (pullDownEl.className.match('loading')) {
pullDownEl.className = '';
pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Pull down to refresh...';
} else if (pullUpEl.className.match('loading')) {
pullUpEl.className = '';
pullUpEl.querySelector('.pullUpLabel').innerHTML = 'Pull up to load more...';
}
},onScrollMove: function () {
if (this.y > 5 && !pullDownEl.className.match('flip')) {
pullDownEl.className = 'flip';
pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Release to refresh...';
this.minScrollY = 0;
} else if (this.y < 5 && pullDownEl.className.match('flip')) {
pullDownEl.className = '';
pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Pull down to refresh...';
this.minScrollY = -pullDownOffset;
} else if (this.y < (this.maxScrollY - 5) && !pullUpEl.className.match('flip')) {
pullUpEl.className = 'flip';
pullUpEl.querySelector('.pullUpLabel').innerHTML = 'Release to refresh...';
this.maxScrollY = this.maxScrollY;
} else if (this.y > (this.maxScrollY + 5) && pullUpEl.className.match('flip')) {
pullUpEl.className = '';
pullUpEl.querySelector('.pullUpLabel').innerHTML = 'Pull up to load more...';
this.maxScrollY = pullUpOffset;
}
},onScrollEnd: function () {
if (pullDownEl.className.match('flip')) {
pullDownEl.className = 'loading';
pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Loading...';
pullDownAction(); // Execute custom function (ajax call?)
} else if (pullUpEl.className.match('flip')) {
pullUpEl.className = 'loading';
pullUpEl.querySelector('.pullUpLabel').innerHTML = 'Loading...';
pullUpAction(); // Execute custom function (ajax call?)
}
}
});

setTimeout(function () { document.getElementById('wrapper').style.left = '0'; },800);
}

document.addEventListener('touchmove',function (e) { e.preventDefault(); },false);

document.addEventListener('DOMContentLoaded',function () { setTimeout(loaded,200); },false);

<style type="text/css" media="all">
body,ul,li {
padding:0;
margin:0;
border:0;
}

body {
font-size:12px;
-webkit-user-select:none;
-webkit-text-size-adjust:none;
font-family:helvetica;
}

header {

position:absolute; z-index:2;
top:0; left:0;
width:100%;
height:45px;
line-height:45px;
background-color:#d51875;
background-image:-webkit-gradient(linear,0 0,0 100%,color-stop(0,#fe96c9),color-stop(0.05,#d51875),color-stop(1,#7b0a2e));
background-image:-moz-linear-gradient(top,#fe96c9,#d51875 5%,#7b0a2e);
background-image:-o-linear-gradient(top,#7b0a2e);
padding:0;
color:#eee;
font-size:20px;
text-align:center;
}

header a {

color:#f3f3f3;
text-decoration:none;
font-weight:bold;
text-shadow:0 -1px 0 rgba(0,0.5);
}

footer {

position:absolute; z-index:2;
bottom:0; left:0;
width:100%;
height:48px;
background-color:#222;
background-image:-webkit-gradient(linear,#999),color-stop(0.02,#666),#222));
background-image:-moz-linear-gradient(top,#999,#666 2%,#222);
background-image:-o-linear-gradient(top,#222);
padding:0;
border-top:1px solid #444;
}

wrapper {

position:absolute; z-index:1;
top:45px; bottom:48px; left:-9999px;
width:100%;
background:#aaa;
overflow:auto;
}

scroller {

position:absolute; z-index:1;
/ -webkit-touch-callout:none;/
-webkit-tap-highlight-color:rgba(0,0);
width:100%;
padding:0;
}

scroller ul {

list-style:none;
padding:0;
margin:0;
width:100%;
text-align:left;
}

scroller li {

padding:0 10px;
height:40px;
line-height:40px;
border-bottom:1px solid #ccc;
border-top:1px solid #fff;
background-color:#fafafa;
font-size:14px;
}

myFrame {

position:absolute;
top:0; left:0;
}

/**

• Pull down styles

• */

  pullDown,#pullUp {

  background:#fff;
  height:40px;
  line-height:40px;
  padding:5px 10px;
  border-bottom:1px solid #ccc;
  font-weight:bold;
  font-size:14px;
  color:#888;
  }

  pullDown .pullDownIcon,#pullUp .pullUpIcon {

  display:block; float:left;
  width:40px; height:40px;
  background:url([e-mail]) 0 0 no-repeat;
  -webkit-background-size:40px 80px; background-size:40px 80px;
  -webkit-transition-property:-webkit-transform;
  -webkit-transition-duration:250ms;
  }

  pullDown .pullDownIcon {

  -webkit-transform:rotate(0deg) translateZ(0);
  }

  pullUp .pullUpIcon {

  -webkit-transform:rotate(-180deg) translateZ(0);
  }

pullDown.flip .pullDownIcon {

-webkit-transform:rotate(-180deg) translateZ(0);
}

pullUp.flip .pullUpIcon {

-webkit-transform:rotate(0deg) translateZ(0);
}

pullDown.loading .pullDownIcon,#pullUp.loading .pullUpIcon {

background-position:0 100%;
-webkit-transform:rotate(0deg) translateZ(0);
-webkit-transition-duration:0ms;

-webkit-animation-name:loading;
-webkit-animation-duration:2s;
-webkit-animation-iteration-count:infinite;
-webkit-animation-timing-function:linear;
}

@-webkit-keyframes loading {
from { -webkit-transform:rotate(0deg) translateZ(0); }
to { -webkit-transform:rotate(360deg) translateZ(0); }
}

<div id="header">iScroll

<div id="wrapper">
<div id="scroller">
<div id="pullDown">
<span class="pullDownIcon"><span class="pullDownLabel">Pull down to refresh...