Google maps wont open using URL launcher in Flutter - flutter

Question

I'm very new to flutter.
I've created an app that should open up google maps on click but it wont open.
Please help me out.
forMap.dart file (This is the file which has the method to launch google maps):
import 'package:url_launcher/url_launcher.dart';
class MapUtils {
MapUtils._();
static Future<void>openMap(double latitude,double longitude) async {
String googleUrl = 'https://www.google.com/maps/search/?api=1&query=$latitude,$longitude';
if(await canLaunch(googleUrl) != null) {
await canLaunch(googleUrl);
} else {
throw 'Could not open the map.';
}
}
}
main.dart file (This is the file which will use the method of the forMap.dart file and launch it):
import 'package:flutter/material.dart';
import 'forMap.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: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
#override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
InkWell(
onTap: (){
MapUtils.openMap(38.8977,77.0365);
},
child: Text('get map'),
),
],
),
),
);
}
}

Answer 1

It is because you have incorrectly calling a function. You're using await canLaunch(googleUrl); instead of await launch(googleUrl); in the if part.
So, your code should be like this:
static Future<void> openMap(double latitude,double longitude) async {
String googleUrl = 'https://www.google.com/maps/search/?api=1&query=$latitude,$longitude';
if(await canLaunch(googleUrl) != null) {
await launch(googleUrl);
} else {
throw 'Could not open the map.';
}
}
You probably don't need to use Future<void> so, change the function name to:
static void openMap(double latitude,double longitude) async {
...
}