main_with_search_v2.dart

import 'package:flutter/material.dart';
import 'package:google_places_flutter/address_search.dart';
import 'package:google_places_flutter/place_service.dart';
import 'package:uuid/uuid.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Google Places Demo',
      theme: ThemeData(
        primarySwatch: Colors.amber,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: 'Places Autocomplete Demo'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  final _controller = TextEditingController();

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Column(
        children: <Widget>[
          TextField(
            controller: _controller,
            readOnly: true,
            onTap: () async {
              // generate a new token here
              final sessionToken = Uuid().v4();
              final Suggestion result = await showSearch(
                context: context,
                delegate: AddressSearch(sessionToken),
              );
              // This will change the text displayed in the TextField
              if (result != null) {
                setState(() {
                  _controller.text = result.description;
                });
              }
            },
            decoration: InputDecoration(
              icon: Container(
                margin: EdgeInsets.only(left: 20),
                width: 10,
                height: 10,
                child: Icon(
                  Icons.home,
                  color: Colors.black,
                ),
              ),
              hintText: "Enter your shipping address",
              border: InputBorder.none,
              contentPadding: EdgeInsets.only(left: 8.0, top: 16.0),
            ),
          ),
        ],
      ),
    );
  }
}