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我是新来的apache cordova，我正在使用jquery mobile和nativedroid2制作数据收集应用程序。我使用的代码是这样的：使用jquery mobile和nativedroid2，按钮不会在apache cordova中显示图标。我如何显示它们？
<!DOCTYPE html>
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KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
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<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="[email protected]" />
<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>[email protected]</p>
</a>
</li>
<li>
<a href="#">
<img src="img/smile.png" class="ui-thumbnail ui-thumbnail-circular" />
<h2>Lorean Gainer</h2>
<p>[email protected]</p>
</a>
</li>
<li>
<a href="#">
<img src="img/smile.png" class="ui-thumbnail ui-thumbnail-circular" />
<h2>Juliet Gieseke</h2>
<p>[email protected]</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>[email protected]</p>
</a>
</li>
<li>
<a href="#">
<img src="img/smile.png"/>
<h2>Lorean Gainer</h2>
<p>[email protected]</p>
</a>
</li>
<li>
<a href="#">
<img src="img/smile.png"/>
<h2>Juliet Gieseke</h2>
<p>[email protected]ow.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，我想在div与id = "page-3"的标题部分显示的图标不会在屏幕上显示出来。请帮助我。提前致谢。 the image将显示我已突出显示的红色圆圈内的刷新图标，但没有任何内容
尝试在该锚标记中添加'data-role =“按钮”role =“button”'后。 –
没有变化。 ;（令人惊讶的是，如果我点击该区域导航到其他页面，但该图标仍然不可见， – Horcrux
这意味着'css/material-design-iconic-font.min.css'未加载。 只是将它添加到你的项目中，你应该很好去。@horcrux –