WXXR/miniprogram/pages/ar/scene-ar-face/index.wxml

<xr-demo-viewer
  title="AR 人脸识别案例"
  intro="人脸识别案例。识别成功后，会在五官典型位置展示几何体。"
  hint="要求基础库 v2.28.1 及以上，前置相机需要客户端 8.0.31 及以上"
>
  <xr-ar-face
    disable-scroll
    id="main-frame"
    width="{{renderWidth}}"
    height="{{renderHeight}}"
    style="width:{{width}}px;height:{{height}}px;top:{{top}}px;left:{{left}}px;display:block;"
    bind:arTrackerState="handleARTrackerState"
  />

  <view wx:if="{{arTrackerShow}}" style="text-align: center;padding: 12px;">
    <view>Tracker识别状态：{{arTrackerState}}</view>
    <view>错误信息：{{arTrackerError}}</view>
  </view>
</xr-demo-viewer>