我是 apache cordova 的新手，我正在使用 jquery mobile 和 nativedroid2 制作数据收集应用程序。我正在使用的代码是这样的：
<!DOCTYPE html>
<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
-->
<html>
<head>
<!--
Customize this policy to fit your own app's needs. For more guidance, see:
https://github.com/apache/cordova-plugin-whitelist/blob/master/README.md#content-security-policy
Some notes:
* gap: is required only on iOS (when using UIWebView) and is needed for JS->native communication
* https://ssl.gstatic.com is required only on Android and is needed for TalkBack to function properly
* Disables use of inline scripts in order to mitigate risk of XSS vulnerabilities. To change this:
* Enable inline JS: add 'unsafe-inline' to default-src
-->
<meta http-equiv="Content-Security-Policy" content="default-src 'self' data: gap: https://ssl.gstatic.com 'unsafe-eval'; style-src 'self' 'unsafe-inline'; media-src *">
<meta name="format-detection" content="telephone=no">
<meta name="msapplication-tap-highlight" content="no">
<meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width">
<link rel="stylesheet" type="text/css" href="css/jquery.mobile-1.4.5.min.css">
<link rel="stylesheet" type="text/css" href="css/index.css">
<link rel="stylesheet" type="text/css" href="css/nativedroid2.css">
<link rel="stylesheet" type="text/css" href="css/waves.min.css">
<link rel="stylesheet" type="text/css" href="css/animate.css">
<title>Sales | DocNme</title>
</head>
<body>
<!-- <div class="app">
<h1>Apache Cordova</h1>
<div id="deviceready" class="blink">
<p class="event listening">Connecting to Device</p>
<p class="event received">Device is Ready</p>
</div>
</div>
-->
<div data-role = "page" id = "page-1">
<div data-role = "header">
</div>
<div data-role = "main" class = "ui-content">
</div>
<div data-role = "footer" data-position="fixed" style="border:none;">
<div align="center" style = "position:relative;"><img src="img/load.GIF" height="50" width="50"></div>
<p align="center" style="position:relative;">Loading...</p>
</div>
</div>
<div data-role = "page" id = "page-2">
<div data-role="header" data-position="fixed" data-tap-toggle="false">
<!--<img class="logo" src="img/logoTagline.png"/>-->
<span class="logo"></span>
</div>
<div role="main" class="ui-content wow fadeIn" data-wow-delay="0.5s">
<h3>Sign In</h3>
<div id="signin-error-msg" class="ui-bg clr-bg-red">
<i class="zmdi zmdi-alert-triangle"></i> <span id="signin-error-msg-text"></span>
</div>
<label for="signin-username">User Name:</label>
<input type="text" name="signin-username" id="signin-username" value="" placeholder="user@domain.com" />
<label for="signin-password">Password:</label>
<input type="password" name="signin-password" id="signin-password" value="" placeholder="Enter your password here..." />
<div class="row center-xs">
<div class="col-xs">
<div class="box">
<a href="#page-3" class="ui-btn ui-btn-raised">Sing In</a>
</div>
</div>
</div>
<a href="#page-4" class="ui-btn
ui-btn-inline
ui-btn-fab
ui-btn-fab-bottom
ui-btn-raised
clr-primary waves-effect waves-button waves-effect waves-button"></a>
</div>
</div>
<div data-role = "page" id = "page-3" class="nd2-no-menu-swipe">
<div data-role = "header" data-position="fixed" data-tap-toggle="false" style="background-color:rgb(60,190,205)">
<!-- <div class="col-sm-4 col-xs-6" data-name="arrow-back">
<div class="box"> -->
<a href="#page-2" class="ui-btn ui-btn-left"><i class="zmdi zmdi-refresh"></i></a>
<!-- </div>
</div>
-->
<ul data-role="nd2tabs" data-swipe="false">
<li data-tab="friends">Friends</li>
<li data-tab="work" data-tab-active="true">Work</li>
</ul>
</div>
<div data-role="main" class="ui-content wow fadeIn" data-inset="false" data-wow-delay="0.2s">
<div data-role="nd2tab" data-tab="friends">
<!-- <nd2-ad data-banner="sample.banner"></nd2-ad> -->
<ul data-role="listview" data-icon="false">
<li data-role="list-divider">
Friends
</li>
<li>
<a href="#">
<img src="img/smile.png" class="ui-thumbnail ui-thumbnail-circular" />
<h2>Ethel Chancy</h2>
<p>ehtel.chancy@example.com</p>
</a>
</li>
<li>
<a href="#">
<img src="img/smile.png" class="ui-thumbnail ui-thumbnail-circular" />
<h2>Lorean Gainer</h2>
<p>lorean87@mail.com</p>
</a>
</li>
<li>
<a href="#">
<img src="img/smile.png" class="ui-thumbnail ui-thumbnail-circular" />
<h2>Juliet Gieseke</h2>
<p>flowerpower69@rainbow.com</p>
</a>
</li>
</ul>
</div>
<div data-role="nd2tab" data-tab="work">
<!-- <nd2-ad data-banner="sample.banner"></nd2-ad> -->
<ul data-role="listview" data-icon="false">
<li data-role="list-divider">
Work
</li>
<li>
<a href="#">
<img src="img/smile.png"/>
<h2>Ethel Chancy</h2>
<p>ehtel.chancy@example.com</p>
</a>
</li>
<li>
<a href="#">
<img src="img/smile.png"/>
<h2>Lorean Gainer</h2>
<p>lorean87@mail.com</p>
</a>
</li>
<li>
<a href="#">
<img src="img/smile.png"/>
<h2>Juliet Gieseke</h2>
<p>flowerpower69@rainbow.com</p>
</a>
</li>
</ul>
</div>
</div>
</div>
<div data-role = "page" id = "page-4">
page 4
</div>
<script type="text/javascript" src="js/jquery-1.12.3.min.js"></script>
<script type="text/javascript" src="js/jquery-ui.min.js"></script>
<script type="text/javascript" src="js/jquery.mobile-1.4.5.min.js"></script>
<script type="text/javascript" src="cordova.js"></script>
<script type="text/javascript" src="js/waves.min.js"></script>
<script type="text/javascript" src="js/wow.min.js"></script>
<script type="text/javascript" src="js/nativedroid2.js"></script>
<script type="text/javascript" src="js/index.js"></script>
</body>
</html>在上面的代码中，我试图在divwith的标题部分显示的图标id = "page-3"没有显示在屏幕上。请帮帮我。提前致谢。该图像会在我突出显示的红色圆圈内显示刷新图标，但那里什么也没有
