How to zoom in and out Google Map in Flutter

In this Google Flutter code snippet example, we are going to learn How to zoom in and out google map in flutter.

You can copy and adopt this source code example to your flutter project easily without issues.

add this code to your pubspec.yaml file

permission_handler: ^3.0.1
 google_maps_flutter: ^0.5.19

Create a zoom_in_out_maps.dart file (use any name of your choice) and add this code:

 
 import 'dart:async';

import 'package:flutter/material.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';

class ZoomInOutMaps extends StatefulWidget {
  @override
  _ZoomInOutMapsState createState() => _ZoomInOutMapsState();
}

class _ZoomInOutMapsState extends State<ZoomInOutMaps> {
  Completer<GoogleMapController> _controller = Completer();

  static const LatLng _center = const LatLng(45.521563, -122.677433);

  void _onMapCreated(GoogleMapController controller) {
    _controller.complete(controller);
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Zoom in and Out of Google Maps'),
          backgroundColor: Colors.red,
        ),
        body: GoogleMap(
          //enable zoom gestures
          zoomGesturesEnabled: true,
          onMapCreated: _onMapCreated,
          initialCameraPosition: CameraPosition(
            target: _center,
            zoom: 11.0,
          ),
        ),
      ),
    );
  }
}

In your main.dart file (main entry point of the app), add this:

import 'package:inducesmile/zoom_in_out_maps.dart';

void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Flutter Code Snippets',
      theme: new ThemeData(primarySwatch: Colors.red),
      home: new ZoomInOutMaps(),
    );
  }
}

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