谷歌地图不出现 [英] Google map in flutter doesn't appear

问题描述

我正在尝试遵循本教程" https://medium.com/flutter-io/google-maps-and-flutter-cfb330f9a245 "，即可在Flutter中添加Google地图.我用谷歌地图键更新了Android清单，并添加了访问fine_location的权限.我的模拟器上没有显示白色屏幕.我花了很多时间试图修复它，但徒劳无功.我还尝试使用插件" https://pub.dartlang.org/packages/google_maps_flutter#-readme-tab- "，但显示地图没有任何帮助.任何帮助表示赞赏，谢谢

I'm trying to follow this tutorial "https://medium.com/flutter-io/google-maps-and-flutter-cfb330f9a245" to add google map in flutter. I updated android manifest with google map key and added a permission for accessing fine_location.I get white screen on my emulator with no map. i spent many hours trying to fix it but in vain . i also tried the sample usage with plugin "https://pub.dartlang.org/packages/google_maps_flutter#-readme-tab-" but nothing help in showing map . any help is appreciated thanks in advance

推荐答案

实际上，通过上述教程中的问题搜索，我没有找到任何答案.我找到了另一种地图绘制方法，并且可以与我一起正常使用，因此我将其发布，因为它可能会对他人有所帮助.您需要将其添加到pubspec.yaml中以获取插件.2-添加Android和Ios的密钥3-将此代码添加到main中.

Actually I didn't find any answer through my search for issues in above tutorial. I find another way for map and it works fine with my so I'll post it, as it may help others. you need to 1- add it in pubspec.yaml to get plugin . 2- add the key for android and Ios 3- add this code in main.

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

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

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  GoogleMapController myMapController;
  final Set<Marker> _markers = new Set();
  static const LatLng _mainLocation = const LatLng(25.69893, 32.6421);
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        home: Scaffold(
            appBar: AppBar(
              title: Text('Maps With Marker'),
              backgroundColor: Colors.blue[900],
            ),
            body: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
                Expanded(
                  child: GoogleMap(
                    initialCameraPosition: CameraPosition(
                      target: _mainLocation,
                      zoom: 10.0,
                    ),
                    markers: this.myMarker(),
                    mapType: MapType.normal,
                    onMapCreated: (controller) {
                      setState(() {
                        myMapController = controller;
                      });
                    },
                  ),
                ),
              ],
            )));
  }

  Set<Marker> myMarker() {
    setState(() {
      _markers.add(Marker(
        // This marker id can be anything that uniquely identifies each marker.
        markerId: MarkerId(_mainLocation.toString()),
        position: _mainLocation,
        infoWindow: InfoWindow(
          title: 'Historical City',
          snippet: '5 Star Rating',
        ),
        icon: BitmapDescriptor.defaultMarker,
      ));
    });

    return _markers;
  }
}

这篇关于谷歌地图不出现的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！