使用 FeatureCollection,路线未显示在 android 中

The Route line is not showing in android by using FeatureCollection

我需要你的一点点查询帮助, 我正在尝试在单个地图上渲染多条折线,它看起来像 (IOS), 它在 IOS 中工作得很好,但在 android 中不起作用,所以我的代码片段它,

import MapboxGL from '@react-native-mapbox-gl/maps';
const MapbBoxDirection = ({shape}: any) => {
  const sp = returnOption(shape);
  const Poliline = React.useMemo(() => {
    return (
      <MapboxGL.Animated.ShapeSource
        id="routeSource"
        buffer={512}
        tolerance={1}
        lineMetrics={false}
        clusterRadius={10}
        shape={sp}>
        <MapboxGL.Animated.LineLayer
          id="routeFill"
          style={{
            lineColor: '#ff8109',
            lineWidth: 10,
            lineRoundLimit: 12,
            lineCap: 'round',
            lineOpacity: 1.84,
          }}
        />
      </MapboxGL.Animated.ShapeSource>
    );
  }, [shape, sp]);
  return Poliline;
};

import {featureCollection, lineString as makeLineString} from '@turf/helpers';

///// 使Json

export const returnOption = (res): any => {
  const feature = res.map((item: any, index: any) => {
    if (item[`Route${index}`]?.length > 2) {
      return makeLineString(item[`Route${index}`]);
    }
  });
  const featureCollectiondata = featureCollection(feature);
  return featureCollectiondata;
};

它在 IOS 中工作正常但在 android、

中不工作

我也在尝试在没有 truf 助手的情况下手动制作 json,我面临着同样的问题。 那么请你帮我如何解决 android, 还有一件事是 SINGLE route 在两个平台上都可以正常工作,所以当我尝试使用 featurecollection json 时它会产生问题, 拜托,我非常感谢你,

经过大量努力,我得到了解决方案 Sometime undefined and null is generate default Therefore route line not render on android,但ios它会默认处理所以

export const returnOption = async (res: any, setShape: any) => {
  const feature = await Promise.all(
    res.map(async (item: any, index: any): Promise<any> => {
      if (item[`Route${index}`]?.length > 1) {
        // return makeLineString(item[`Route${index}`]);
        return {
          type: 'Feature',
          properties: {
            prop0: 'value0',
            prop1: 0.0,
          },
          geometry: {
            type: 'LineString',
            coordinates: item[`Route${index}`],
          },
        };
      }
    }),
  );
  const RemoveUndefined = feature?.filter(item => item !== undefined);
  setShape({
    type: 'FeatureCollection',
    features: RemoveUndefined,
  });
};

终于找到解决方法了