HERE 映射 JS API 3.1 - Angular 中样式组'non-collision'的错误

Question

有时在加载带有卫星基础图层的 HERE 地图时会出现此错误：

Tangram [error]: Error for style group 'non-collision' for tile 13/16/15542/12554/15 Cannot read property 'retain' of undefined: TypeError: Cannot read property 'retain' of undefined
at https://js.api.here.com/v3/3.1/mapsjs-core.js:377:259708
at Array.forEach (<anonymous>)
at https://js.api.here.com/v3/3.1/mapsjs-core.js:377:259679
at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invoke (http://localhost:4200/polyfills.js:3508:26)
at Object.onInvoke (http://localhost:4200/vendor.js:64284:33)
at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invoke (http://localhost:4200/polyfills.js:3507:52)
at Zone.push../node_modules/zone.js/dist/zone.js.Zone.run (http://localhost:4200/polyfills.js:3267:43)
at http://localhost:4200/polyfills.js:4006:34
at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask (http://localhost:4200/polyfills.js:3540:31)
at Object.onInvokeTask (http://localhost:4200/vendor.js:64275:33)

这样可以防止一开始加载图块。 它不会每次都发生。大约 3 个页面加载中的 10 个。如果平移或切换到默认图层.矢量.正常.地图图层，它将开始正确加载切片。

我使用的是 Angular 7.2.15 和 HERE API 3.1。

我通过以下方式初始化地图：

const platform = new H.service.Platform({ apikey: apiKey });
const defaultLayers = platform.createDefaultLayers();
const map = new H.Map(
elementRef.nativeElement, // elementRef:ElementRef from directive constructor
defaultLayers.raster.satellite.map,
{
zoom: 15,
center: {lat: 0, lng:0}
}
);
const behavior = new H.mapevents.Behavior(new H.mapevents.MapEvents(map));
const ui = new H.ui.UI(map);
const zoomControl = new H.ui.ZoomControl();
ui.addControl('zoom', zoomControl);

如何在卫星视图中加载地图而不会引发此错误？

Answer 1

该行为的一个可能问题可能是在加载网页后加载了一些 HERE JS 库。尝试稍后在代码中添加卫星层是否有更好的响应。

// default map base layer 
var map = new H.Map(document.getElementById('mapContainer'),
defaultLayers.vector.normal.map,{
center: {lat:52.5160, lng:13.3779},
zoom: 13
});
// set base layer later 
map.setBaseLayer(defaultLayers.raster.satellite.map);