为空异常处理

app/src/main/java/com/electric/chargingpile/activity/RoutePlanMapActivity.java

    public void showInfoWindowData(final String zhan_id, final View infoWindow, final ZhanData zhanData, final Marker marker) {
        TextView mInfoWindowFast = infoWindow.findViewById(R.id.evsdk_tv_info_fast);
        mInfoWindowFast.setText(zhanData.getFast_num());
        //infowinow中慢充数的显示
        TextView mInfoWindowSlow = infoWindow.findViewById(R.id.evsdk_tv_info_slow);
        mInfoWindowSlow.setText(zhanData.getSlow_num());
        //infowinow中运营商的显示
        TextView mInfoWindowSupplier = infoWindow.findViewById(R.id.evsdk_tv_info_supplier);
        mInfoWindowSupplier.setText(zhanData.getSupplier());
        //infowinow中距离的显示
        TextView mInfoWindowDistance = infoWindow.findViewById(R.id.evsdk_tv_info_distance);
        LatLng ll = new LatLng(Double.parseDouble(start_wei), Double.parseDouble(start_jing));
        mInfoWindowDistance.setText(Util.getDistance(distance));
        //infowinow中站名称的显示
        TextView mInfoWindowName = infoWindow.findViewById(R.id.evsdk_tv_info_name);
        mInfoWindowName.setText(zhanData.getZhan_name());
        if (zhanData != null) {
            mInfoWindowSlow.setText(zhanData.getSlow_num());
            mInfoWindowFast.setText(zhanData.getFast_num());
            mInfoWindowName.setText(zhanData.getZhan_name());
            mInfoWindowSupplier.setText(zhanData.getSupplier());
        }
        //infowinow中添加/删除途经点的显示
        ImageView mInfoWindowDeal = infoWindow.findViewById(R.id.evsdk_iv_deal_waypoint);
        if (marker.getTitle().equals(ROUTE_POINT_ONE) || marker.getTitle().equals(ROUTE_POINT_TWO)
                        zhan.setPoi_jing(String.valueOf(marker.getPosition().longitude));
                        zhan.setPoi_wei(String.valueOf(marker.getPosition().latitude));
                        zhan.setZhan_id(zhan_id);
                        zhan.setZhan_name(zhanData.getZhan_name());
                        if (zhanData != null) {
                            zhan.setZhan_name(zhanData.getZhan_name());
                        }
                        list_zhong.add(zhan);
                        Log.e("size===", list_zhong.size() + "");