小编Ami*_*ala的帖子

我想将所有标记放在地图的中心，适合缩放到设备大小，下面是我所做的代码。我正在使用 google_maps_flutter: ^0.5.18 来开发一个基本的“谷歌地图上的多个标记”类型的 Flutter 屏幕

1. 最初将其设置为静态在添加标记（）函数中，

2. 我将只创建标记的地图并将其转换为设置，然后将其传递给 Google 地图小部件

   import 'dart:async';
       import 'dart:math';
       import 'package:flutter/foundation.dart';
       import 'package:flutter/gestures.dart';
       import 'package:flutter/material.dart';
       import 'package:flutter_app/utils/AppConstants.dart';
       import 'package:flutter_app/utils/AppDimens.dart';
       import 'package:flutter_app/utils/CommonColors.dart';
       import 'package:flutter_app/utils/CommonUtils.dart';
       import 'package:flutter_app/utils/networ_util.dart';
   
       import 'package:google_maps_flutter/google_maps_flutter.dart';
       import 'package:permission_handler/permission_handler.dart';
       import 'package:location/location.dart';
       import 'package:screen/screen.dart';
   
       class BusTrackingMap extends StatefulWidget {
         static String tag = "bus-tracking-page";
   
         @override
         State<StatefulWidget> createState() {
           // TODO: implement createState
           return _BusTrackingMapState();
         }
       }
   
       class _BusTrackingMapState extends State<BusTrackingMap>
           with TickerProviderStateMixin {
         static String homeMarkerId = "101";
         static String schoolMarkerId = "102";
         static String driverMarkerId …

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