· 开发版本：0.19.191100

· 基础库版本：1.4.0

· 微信版本：6.5.10

手机操作系统：华为 P9 android

问题：

cover-view覆盖在地图上时，模拟器下可以，真机下不行，没任何显示

代码：

<view class="map_container"> 

  <map class="map" id="map" longitude="{{longitude}}" latitude="{{latitude}}" scale="14" show-location="true" markers="{{markers}}" bindmarkertap="makertap"  polyline="{{polyline}}" bindtap="maptap">

  <cover-view class="car_info" hidden="{{carInfohidden}}"> 

    <view class="basicInfo">

     <image style="width: 750rpx; height: 165rpx;margin-left=20rpx;margin-top:5rpx;" mode="{{item.mode}}" src="../../img/new_card_bg1.png">

       <text class="driverNameCss">{{placeData.driverName}}</text> 

       <text class="carNumberCss">{{placeData.carNumber}}</text>

       <text class="brandNameCss">{{placeData.brandName}}</text> 

       <image class="closeImageCss"  src="../../img/new_close_gray.png"  bindtap="closeCarInfo"> </image>

       <image class="carImgCss"  src="../../img/vehicle_detail.png"> </image>

      </image>

    </view>

  <view class="stateInfo">

   <image style="width: 750rpx; height: 300rpx;margin-left=20rpx;margin-top:5rpx;" mode="{{item.mode}}" src="../../img/new_card_bg2.png">

    <view class="waringInfo">

       <view class="carState" style="flex-direction:row;"> <text class="carTextFlagCss">当前状态: </text><text  class="carTextCss">{{placeData.state}}</text> </view>

       <view class="carStateTime" style="flex-direction:row;"><text  class="carTextFlagCss">上报时间: </text><text  class="carTextCss">{{placeData.sTime}}</text> </view>

    </view>

     <image class="lineImage"  src="../../img/vertical_line.png"> </image>

     <image class="lineImage2"  src="../../img/vertical_line.png"> </image>

    <view class="GPSInfo">

      <view class = "subGPSInfo">

        <view class = "itemCss">

          <view class="carTextFlagCss">纬度</view> 

          <view class="carTextCss">{{placeData.latitude}}</view>

        </view>

        <view class = "itemCss">

          <view class="carTextFlagCss">经度</view>

          <view class="carTextCss">{{placeData.longitude}}</view>  

        </view>

        <view class = "itemCss">

          <view class="carTextFlagCss">速度</view>

          <view class="carTextCss">{{placeData.speed}}

          </view>

        </view>

       </view>

      <view class = "subGPSInfo">

        <view class = "itemCss">

          <view class="carTextFlagCss">方向</view>

          <view class="carTextCss">{{placeData.heading}}</view> 

        </view>

        <view class = "itemCss">

          <view class="carTextFlagCss">海拔</view>

          <view class="carTextCss">{{placeData.altitude}}</view> 

        </view>

        <view class = "itemCss">

          <view class="carTextFlagCss">GPS时间</view>

          <view class="carTextCss">{{placeData.pTime}}</view> 

        </view>

       </view>

    </view>

    </image>

    </view>

    <view class="otherInfo">

      <image style="width: 750rpx; height: 250rpx;margin-left=10rpx;margin-top:1rpx;" mode="{{item.mode}}" src="../../img/new_card_bg3.png">

         <view class="basicOtherInfo">

           <view style="display: flex;"><Text class="carTextFlagCss">领航员 </Text><Text class="carTextCss">{{placeData.pilotName}}</Text> </view>

            <view style="display: flex;"><Text class="carTextFlagCss">俱乐部 </Text><Text class="carTextCss">{{placeData.clubName}}</Text> </view>

            <view style="display: flex;"><Text class="carTextFlagCss">组别 </Text><Text class="carTextCss">{{placeData.groupName}}</Text> </view>

        </view>

         <view class="historyTraceCss">

         <button type="primary" size="{{primarySize}}" loading="{{loading}}" plain="{{plain}}"

          disabled="{{disabled}}" bindtap="showHistoryTrace"> 历史轨迹 </button>

        </view>

      </image>

    </view>

  </cover-view>

<!--

  <cover-view class="controls" >

  <view >

       <image class="img" src="../../img/vehicle_detail.png" /> 

     <view> 12345</view>

    </view>

   <cover-view class="pause" bindtap="pause">

      <cover-image class="img" src="../../img/marker_red.png" />

    </cover-view>

    <cover-view class="time">00:00</cover-view>

  </cover-view>-->

  </map> 

</view>