/**
 * 新增步行路線到地圖中。
 *
 * @since V2.1.0
 */
public void addToMap() {

    initPolylineOptions();
    try {
        List<WalkStep> walkPaths = walkPath.getSteps();
        for (int i = 0; i < walkPaths.size(); i++) {
            WalkStep walkStep = walkPaths.get(i);
LatLng latLng = AMapServicesUtil.convertToLatLng
 
(walkStep
                    .getPolyline().get(0));
            if (i < walkPaths.size() - 1) {
                if (i == 0) {
                    addWalkPolyLine(startPoint, latLng);
}
                checkDistanceToNextStep(walkStep, walkPaths.get(i + 1));
} else {
                LatLng latLng1 = AMapServicesUtil
                        .convertToLatLng
 
(getLastWalkPoint(walkStep));
addWalkPolyLine(latLng1, endPoint);
}

            //addWalkStationMarkers(walkStep, latLng);
            //問題出現在這個方法上。
addWalkPolyLines(walkStep);
}
        addStartAndEndMarker();
showPolyline();
} catch (Throwable e) {
        e.printStackTrace();
}
}