动态加载xr-ar-tracker和xr-asset-load?
Component: <xr-scene ar-system="modes:Marker" bind:ready="handleReady">
<xr-assets wx:for="{{trackers}}" wx:key="id" bing:loaded="handleAssetsLoaded">
<xr-asset-load type="gltf" asset-id="{{item.modelName}}" src="{{item.modelSrc}}" />
</xr-assets>
<xr-node id="container" wx:if="{{loaded}}" wx:for="{{trackers}}" wx:key="id">
<xr-ar-tracker mode="Marker" src="{{item.trackerSrc}}">
<xr-gltf node-id="{{item.modelName}}" model="{{item.modelName}}" />
</xr-ar-tracker>
</xr-node>
<xr-light type="ambient" color="1 1 1" intensity="1" />
<xr-light type="directional" rotation="40 70 0" color="1 1 1" intensity="3" cast-shadow />
<xr-camera clear-color="0 0 0 1" background="ar" is-ar-camera />
</xr-scene>
Component (TS): handleAssetsLoaded:function(){
console.log("Done")
this.setData({
loaded:true
})
}
Data : const trackers = [
{id:0,modelName:"test1",
trackerSrc:"https://mmbizwxaminiprogram-1258344707.cos.ap-guangzhou.myqcloud.com/xr-frame/demo/portalImage.jpg",
modelSrc:"https://mmbizwxaminiprogram-1258344707.cos.ap-guangzhou.myqcloud.com/xr-frame/demo/damage-helmet/index.glb"},
{id:1,modelName:"test2",
trackerSrc:"https://mmbizwxaminiprogram-1258344707.cos.ap-guangzhou.myqcloud.com/xr-frame/demo/wxball.jpg",
modelSrc:"https://mmbizwxaminiprogram-1258344707.cos.ap-guangzhou.myqcloud.com/xr-frame/demo/miku.glb"},
]
this.setData({
trackers
})
问题：真机调试时，无报错，也没有打印“Done”。想了解XR-Frame怎么做动态加载tracker和资产
