mini-ar-demo/miniprogram/pages/scaner/scaner.wxml

<view class="page">
  <navigation-bar title="{{'四维AR'}}" back="{{true}}" />
  <!-- <view class="loading" wx:if="{{!loaded}}">
    <text>{{progress}}%</text>
  </view> -->
  <ar-tracker disable-scroll id="main-frame" width="{{renderWidth}}" height="{{renderHeight}}" style="width:{{width}}px;height:{{height}}px;" bind:scan="handleScan" />
</view>