webview H5页面无法滚动

webview 嵌入H5页面，页面是使用的mui布局的，class="mui-content mui-scroll-wrapper" 的滚动效果没出来，但用浏览器都可以实现滚动。
部分代码：

<!--页面主结构开始-->
<div id="app" class="mui-views">
<div class="mui-view">
<div class="mui-navbar">
</div>
<div class="mui-pages">
</div>
</div>
</div>
<!--页面主结构结束-->
<div id="setting" class="mui-page">
<div class="mui-navbar-inner mui-bar mui-bar-nav">
<a class=" mui-icon mui-icon-home mui-pull-left" style="color: white;" id="butgoHome" href="#"></a>

        <h1 class="mui-center mui-title" id="TillText" style="color: white;"></h1>  
 <button type="button" class="mui-left  mui-btn  mui-btn-link mui-btn-nav mui-pull-right" id="butFormList" style="color: white;">  
            列表  
        </button>         
         <a  class="mui-left  mui-btn  mui-btn-link mui-btn-nav mui-pull-right" href="#fileView" id="butFileview" style="color: white;margin-right: 10px;">  
            附件<span id="FileDetailCount" style="color: #f0ad4e;">0</span>  
        </a>  

    </div>    
                <div >  
                    <div class="mui-content mui-scroll-wrapper">  
                        <div >  

                            <div >  
                                <div class="mui-card">  
                                    <div class="mui-card-content" id="formdataInfo">  
                                        <form class="mui-input-group">  
                                            <div id="DataContent">  

                                            </div>  

                                        </form>  
                                    </div>