如何使用flutter_google_places_autocomplete.dart解决错误? [英] How to fix error with flutter_google_places_autocomplete.dart?

问题描述

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它的路径.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.

I make an application with Google maps in which you can find a place and build a path to it on the map. I want to show places and addresses below it according to what the user types.After showing the results, I need to get its latitude and longitude to mark on the map.

我尝试使用flutter_google_places: 0.2.3，但是未定义函数(GoogleMapsPlaces，Prediction).接下来，我使用flutter_google_places_autocomplete: 0.1.3，一切都很好.不幸的是，当我尝试运行该项目时，出现错误:

I tried to use a flutter_google_places: 0.2.3 but functions(GoogleMapsPlaces, Prediction) were not defined. Next i used flutter_google_places_autocomplete: 0.1.3 and everything was fine. Unfortunately when i tride to run the project I got an error:

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({^编译器失败 C:\ Users \ admin \ AndroidStudioProjects \ advertise_me \ lib \ main.dart

Compiler message: 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: Error: Too many positional arguments: 0 allowed, but 1 found. Try removing the extra positional arguments. _places = new 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: Context: Found this candidate, but the arguments don't match.
GoogleMapsPlaces({ ^ Compiler failed on C:\Users\admin\AndroidStudioProjects\advertise_me\lib\main.dart

失败:构建失败，并出现异常.

FAILURE: Build failed with an exception.

• 其中:脚本'C:\ Users \ admin \ flutter \ packages \ flutter_tools \ gradle \ flutter.gradle' 行:647

• Where: Script 'C:\Users\admin\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 647

出了什么问题:任务':app:compileflutterBuildDebugandroid-arm64'的执行失败.

What went wrong: Execution failed for task ':app:compileflutterBuildDebugandroid-arm64'.

处理'命令'C:\ Users \ admin \ flutter \ bin \ flutter.bat'完成，退出值非零1

Process 'command 'C:\Users\admin\flutter\bin\flutter.bat'' finished with non-zero exit value 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.与--scan一起运行以获得完整的见解.

Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

在 https://help.gradle.org

在9秒钟内构建失败，并完成以下错误:Gradle任务assembleDebug 失败，退出代码为1

BUILD FAILED in 9s Finished with error: Gradle task assembleDebug failed with exit code 1

我的pubspes.yaml:

My pubspes.yaml:

依赖性:颤动: sdk:颤抖

dependencies: flutter: sdk: flutter

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

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 geocoder: 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.

How do i fix this error? Any help is much appreciated.

推荐答案

flutter_google_places_autocomplete已过时，应改为使用flutter_google_places.查看文档: https://pub.dev/packages/flutter_google_places_autocomplete

flutter_google_places_autocomplete is deprecated and you should use flutter_google_places instead. See documentation : https://pub.dev/packages/flutter_google_places_autocomplete

使用flutter_google_places后，请使用

Prediction p = await PlacesAutoComplete.show()而不是showGooglePlacesAutoComplete()

========更新的答案=====

======= updated answer =====

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);
    }
  }
}

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