小编ste*_*ish的帖子

列表.dart

import 'package:flutter/material.dart';
import 'package:url_launcher/url_launcher.dart';

class List extends StatefulWidget {

  @override
  ListState createState() {
    return new ListState();
  }
}

class ListState extends State<List> {

  static const double lat = 2.813812,  long = 101.503413;
  static const String map_api= "API_KEY";

  @override
  Widget build(BuildContext context) {

    //method to launch maps
    void launchMap() async{
      const url = "https://maps.google.com/maps/search/?api=$map_api&query=$lat,$long";
      if (await canLaunch(url)) {
        print("Can launch");
        void initState(){
          super.initState();

          canLaunch( "https://maps.google.com/maps/search/?api=$map_api&query=$lat,$long");
        }

        await launch(url);
      } else {
        print("Could not launch");
        throw 'Could not launch Maps';
      } …