公交路线规划可以根据起终点获取公交路线规划数据，并可以通过添加Polyline绘制出公交路线，效果图：

示例代码：

let option: TransitRoutePlanOption = {
from: PlanNode.withLocation(fromArr),
to: PlanNode.withLocation(toArr)
}
// 获取公交路线规划
RoutePlanSearch.newInstance().transitSearch(option)
.then((res: TransitRouteResult) => {
  try {
    let resultLine: Array<LatLng> = []
    if (typeof res.routeLines === "undefined") {
      return
    }
    let line: TransitRouteLine = res.routeLines[0]
    let steps: TransitStep[] = line.steps
    for (let i = 0; i < steps.length; i++) {
      let step = steps[i]
      let llAry: LatLng[] = parseGeoStr2LLArray(step.pathString)
      llAry.forEach(element => {
        resultLine.push(element)
      })
    }
    let polyline:Polyline = new Polyline({
      points: resultLine,
      fillcolor: '#a6f',
      width: 10,
      join: SysEnum.LineJoinType.ROUND,
      cap: SysEnum.LineCapType.BUTT,
      isThined: true,
      isGeodesic: true
    });
    this.mapController?.addOverlay(polyline);
  } catch (e) {

  }
})

示例代码：

const massOpt: MassTransitRoutePlanOption = {
  from: from,
  to: to
}
RoutePlanSearch.newInstance().masstransitSearch(massOpt)
  .then((res: MassTransitRouteResult) => {
    let resultLine: Array<LatLng> = []
    if (typeof res.routeLines === "undefined") {
      return
    }
    let line = res.routeLines[0]
    let steps = line.newSteps
    if (typeof steps === "undefined") {
      return
    }
    for (let i = 0; i < steps.length; i++) {
      for (let j = 0; j < steps[i].length; j++) {
        let step = steps[i][j]
        let llAry: LatLng[] = parseStrPathToLLArray(step.pathString)
        llAry.forEach(element => {
          resultLine.push(element)
        })
      }
    }

    let polyline: Polyline = new Polyline({
      points: resultLine,
      fillcolor: '#6af',
      width: 10,
      join: SysEnum.LineJoinType.ROUND,
      cap: SysEnum.LineCapType.ROUND,
      isThined: true,
      isGeodesic: true
    });
    this.map?.addOverlay(polyline);
  })