Framework7 - 刷新

描述

这是一个特殊的组件,用于通过拉动来刷新(重新加载)页面内容.

以下代码显示如何刷新页面内容 :

<div class = "page">
   <!-- Page content should have additional "pull-to-refresh-content" class -->
   <div class = "page-content pull-to-refresh-content" data-ptr-distance = "55">
      <!-- Default pull to refresh layer-->
      <div class = "pull-to-refresh-layer">
         <div class = "preloader"></div>
      <div class = "pull-to-refresh-arrow"></div>
   </div>

   <!-- usual content below -->
   <div class = "list-block">
      ...
   </div>
</div>

以下类用于刷新 :

  • 页面内容 : 它有一个额外的 pull-to-refresh-content 类,它需要启用pull来刷新.

  • pull -to-refresh-layer : 它是一个隐藏层,用于拉动刷新视觉元素,它只是一个预加载器和一个箭头.

  • data-ptr-distance ="55" : 这是附加属性,允许您设置自定义"拉到刷新"触发距离,其默认值为44px.

拉动刷新事件

在"拉动刷新"中有一些JavaScript事件,在下表中给出 :

S.No活动&说明目标
1

pullstart

每当您开始提取内容时,它都会被触发.

拉动刷新内容.

 
< div class ="拉至刷新内容"&GT;
2

pullmove

当您提示刷新内容时会触发.

拉动刷新内容.

 
< div class ="pull-to-refresh-content"&gt ;
3

pullend

每当您释放pull以刷新内容时,它都会被触发.

拉动刷新内容.

 
< div class ="pull-to-refresh-content" &GT;
4

刷新

当拉动刷新进入"刷新"时,将触发此事件州.

拉动刷新内容.

 
< div class ="pull-to-refresh-content">
5

refreshdone

刷新后会触发它并返回初始状态.这将在调用 pullToRefreshDone 方法后完成.

拉动刷新内容.

 
< div class ="pull-to-refresh-content">

可以使用App的方法使用Pull to Refresh.

S.否App的方法&说明
1

myApp.pullToRefreshDone(ptrContent)

它用于重置 pull-to-refresh 内容.

2

myApp.pullToRefreshTrigger(ptrContent)

它用于触发刷新指定的拉动以刷新内容.

3

myApp.destroyPullToRefresh(ptrContent)

它用于销毁/禁用拉动以刷新指定的拉动以刷新内容.

4

myApp.initPullToRefresh(ptrContent)

它用于初始化/启用 拉动以刷新内容.



其中 ptrContent 用于 HTMLElement string 拉到刷新内容以重置/触发或禁用/启用.

示例

以下示例演示如何使用刷新组件启动页面内容的刷新 :

<!DOCTYPE html>
<html>
   <head>
      <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no, minimal-ui">
      <meta name="apple-mobile-web-app-capable" content="yes">
      <meta name="apple-mobile-web-app-status-bar-style" content="black">
      <title>Pull To Refresh</title>
      <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/framework7/1.4.2/css/framework7.ios.min.css">
      <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/framework7/1.4.2/css/framework7.ios.colors.min.css">
   </head>
   <div class="views">
      <div class="view view-main">
         <div class="pages">
            <div data-page="home" class="page navbar-fixed">
               <div class="navbar">
                  <div class="navbar-inner">
                     <div class="left"> </div>
                     <div class="center">Pull To Refresh</div>
                     <div class="right"> </div>
                  </div>
               </div>
               <div class="page-content pull-to-refresh-content">
                  <div class="pull-to-refresh-layer">
                     <div class="preloader"></div>
                     <div class="pull-to-refresh-arrow"></div>
                  </div>
                  <div class="list-block media-list">
                     <ul>
                        <li class="item-content">
                           <div class="item-media"><img src="/framework7/images/apple.png" width="44"></div>
                           <div class="item-inner">
                              <div class="item-title-row">
                                 <div class="item-title">apple</div>
                              </div>
                           </div>
                        </li>
                        <li class="item-content">
                           <div class="item-media"><img src="/framework7/images/froots_img.jpg" width="44"></div>
                           <div class="item-inner">
                              <div class="item-title-row">
                                 <div class="item-title">strawberry</div>
                              </div>
                           </div>
                        </li>
                        <li class="item-content">
                           <div class="item-media"><img src="/framework7/images/mango.jpg" width="44"></div>
                           <div class="item-inner">
                              <div class="item-title-row">
                                 <div class="item-title">Mango</div>
                              </div>
                           </div>
                        </li>
                     </ul>
                     <div class="list-block-label">
                        <p>Just pull page down to let the magic happen.</p>
                     </div>
                  </div>
               </div>
            </div>
         </div>
      </div>
   </div>
   <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/framework7/1.4.2/js/framework7.min.js"></script>
   <script>
      var myApp = new Framework7();

      var $$ = Dom7;

      // Dummy Content
      var fruits = ['mango', 'orange', 'watermelon', 'banana'];
      // Pull to refresh content
      var ptrContent = $$('.pull-to-refresh-content');
      // Add 'refresh' listener on it
      ptrContent.on('refresh', function (e) {
         // Emulate 2s loading
         setTimeout(function () {
            var picURL = 'images/Fruit.jpg' + Math.round(Math.random() * 100);
            var fruit = fruits[Math.floor(Math.random() * fruits.length)];
            var itemHTML = '<li class="item-content">' +
               '<div class="item-media"><img src="/framework7/images/Fruit.jpg" width="44"/></div>' +
               '<div class="item-inner">' +
               '<div class="item-title-row">' +
               '<div class="item-title">' + fruit + '</div>' +
                  '</div>' + '</div>' + '</li>';
            // Prepend new list element
            ptrContent.find('ul').prepend(itemHTML);
				
            // When loading done, we need to reset it
            myApp.pullToRefreshDone();
         }, 2000);
      });
   </script>
</html>

输出

让我们执行以下步骤,看看上面给出的代码如何工作 : 去;

  • 将上面给出的HTML代码保存为服务器根文件夹中的 pull_to_refresh.html 文件.

  • 将此HTML文件打开为http://localhost/pull_to_refresh.html,输出显示如下.

  • 当用户下拉时,页面将刷新内容.