我使用Google地图制作了一个应用程序,您可以在其中找到一个地点并在地图上建立通往该地点的路径。我想根据用户键入的内容在其下方显示地点和地址。显示结果后,我需要获取其经度和纬度以在地图上进行标记。
我尝试使用flutter_google_places: 0.2.3
,但未定义函数(GoogleMapsPlaces,Prediction)。接下来,我使用了flutter_google_places_autocomplete: 0.1.3
,一切都很好。不幸的是,当我尝试运行项目时,出现错误:
编译器消息: file:/// C:/Users/admin/AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/flutter_google_places_autocomplete-0.1.3/lib/src/flutter_google_places_autocomplete.dart:337:35: 错误:位置参数过多:允许0,但找到1。尝试 删除多余的位置参数。 _places =新的GoogleMapsPlaces(widget.apiKey); ^ file:/// C:/Users/admin/AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/google_maps_webservice-0.0.14/lib/src/places.dart:22:3: 上下文:找到了该候选者,但参数不匹配。
GoogleMapsPlaces({^编译失败 C:\ Users \ admin \ AndroidStudioProjects \ advertise_me \ lib \ main.dart失败:构建失败,并出现异常。
其中:脚本'C:\ Users \ admin \ flutter \ packages \ flutter_tools \ gradle \ flutter.gradle' 行:647
出了什么问题:任务':app:compileflutterBuildDebugandroid-arm64'的执行失败。
处理'命令'C:\ Users \ admin \ flutter \ bin \ flutter.bat'完成,退出值非零1
尝试:使用--stacktrace选项运行以获取堆栈跟踪。使用--info或--debug选项运行以获取更多日志输出。使用--scan运行以获取完整的见解。
- 获得更多帮助
在9秒钟内构建失败,但出现错误:Gradle任务assembleDebug 失败,退出代码为1
我的pubspes.yaml:
依赖性:颤动: sdk:颤抖
cupertino_icons:^ 0.1.2 url_launcher:^ 4.2.0 + 1
google_maps_flutter:bottom_sheet_stateful:^ 0.1.1
flutter_google_places_autocomplete:0.1.3地理编码器:0.1.2
google_maps_webservice:0.0.14
我的代码:
import 'package:flutter/material.dart';
import 'package:advertise_me/login_screen.dart';
import 'dart:async';
import 'package:google_maps_webservice/geocoding.dart';
//import 'package:flutter_google_places/flutter_google_places.dart';
import 'package:flutter_google_places_autocomplete/flutter_google_places_autocomplete.dart';
import 'package:geocoder/geocoder.dart';
void main() => runApp(MyApp());
const kGoogleApiKey = "My key";
GoogleMapsPlaces _places = GoogleMapsPlaces(apiKey: kGoogleApiKey);
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: demo(),
),
);
}
}
class demo extends StatefulWidget {
@override
demoState createState() => new demoState();
}
class demoState extends State<demo> {
@override
Widget build(BuildContext context) {
return Scaffold(
body: Container(
alignment: Alignment.center,
child: RaisedButton(
onPressed: () async {
Prediction p = await showGooglePlacesAutocomplete(
context: context, apiKey: kGoogleApiKey);
displayPrediction(p);
},
child: Text('Find address'),
)
)
);
}
Future<Null> displayPrediction(Prediction p) async {
if (p != null) {
PlacesDetailsResponse detail =
await _places.getDetailsByPlaceId(p.placeId);
var placeId = p.placeId;
double lat = detail.result.geometry.location.lat;
double lng = detail.result.geometry.location.lng;
var address = await Geocoder.local.findAddressesFromQuery(p.description);
print(lat);
print(lng);
}
}
}
如何解决此错误? 非常感谢您的帮助。
答案 0 :(得分:0)
flutter_google_places_autocomplete
已过时,应改为使用flutter_google_places
。查看文档:{{3}}
使用flutter_google_places
后,请使用
Prediction p = await PlacesAutoComplete.show()
而不是showGooglePlacesAutoComplete()
========更新的答案=====
import 'package:flutter/material.dart';
//import 'package:advertise_me/login_screen.dart';
import 'dart:async';
import 'package:flutter_google_places/flutter_google_places.dart';
import 'package:geocoder/geocoder.dart';
import 'package:google_maps_webservice/places.dart';
void main() => runApp(MyApp());
const kGoogleApiKey = "My key";
GoogleMapsPlaces _places = GoogleMapsPlaces(apiKey: kGoogleApiKey);
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: demo(),
),
);
}
}
class demo extends StatefulWidget {
@override
demoState createState() => new demoState();
}
class demoState extends State<demo> {
@override
Widget build(BuildContext context) {
return Scaffold(
body: Container(
alignment: Alignment.center,
child: RaisedButton(
onPressed: () async {
Prediction p = await PlacesAutocomplete.show(
context: context, apiKey: kGoogleApiKey);
displayPrediction(p);
},
child: Text('Find address'),
)
)
);
}
Future<Null> displayPrediction(Prediction p) async {
if (p != null) {
PlacesDetailsResponse detail =
await _places.getDetailsByPlaceId(p.placeId);
var placeId = p.placeId;
double lat = detail.result.geometry.location.lat;
double lng = detail.result.geometry.location.lng;
var address = await Geocoder.local.findAddressesFromQuery(p.description);
print(lat);
print(lng);
}
}
}
答案 1 :(得分:0)
与导入'package:google_maps_webservice/places.dart';
一起使用导入'package:flutter_google_places/flutter_google_places.dart';