Get lat/lon of a place selected via autocomplete dialog

main.dart

// Using https://github.com/fluttercommunity/flutter_google_places
import 'package:flutter/material.dart';
import 'package:flutter_google_places/flutter_google_places.dart';
import 'package:google_maps_webservice/places.dart';

const googleApiKey = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxx';
GoogleMapsPlaces _places = GoogleMapsPlaces(apiKey: googleApiKey);

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key}) : super(key: key);

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(appBar: AppBar(title: Text('Map App 📌')), body: Map());
  }
}

class Map extends StatelessWidget {
  Future<void> _findPlace(BuildContext ctx) async {
    Prediction placePrediction = await PlacesAutocomplete.show(
        context: ctx,
        apiKey: googleApiKey,
        mode: Mode.overlay, // Mode.fullscreen
        language: "en",
        components: [
          Component(Component.country, "us"),
          Component(Component.country, "ca")
        ]);

    PlacesDetailsResponse geoInfo =
        await _places.getDetailsByPlaceId(placePrediction.placeId);

    // This is it 👇👇👇
    print(geoInfo.result.geometry.location.lat);
    print(geoInfo.result.geometry.location.lng);
  }

  @override
  Widget build(BuildContext ctx) {
    return Container(
        child: RaisedButton.icon(
      icon: Icon(Icons.map),
      label: Text('Map it'),
      onPressed: () {
        _findPlace(ctx);
      },
    ));
  }
}