在安卓手机上显示正常，但是在IOS上显示不出来

<view style=“display:{{showModalStatus==true?‘none’:’’}}”>

    <map id=“myMap” longitude="{{longitude}}" latitude="{{latitude}}"  

    show-location  polyline="{{polyline}}" markers="{{markers}}" bindcontroltap=“controltapdw”

    scale="{{scale}}">

      <cover-view class=“bottomtotal1”>

        <cover-view class=“bottomtotal_center1”>

               <cover-image class=“img mapimag” src="/image/5.png" />

            </cover-view>

      </cover-view>

    </map>

</view>