Bla

import 'package:flutter/material.dart';
import 'package:simple_permissions/simple_permissions.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,
      ),
      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> {

    var _data = "Scan";

  //Fungsi Untuk Check Permission Camera -> Scan QR
  void scanQr() async {
    bool isAllowed = await SimplePermissions.checkPermission(Permission.Camera);
    PermissionStatus status = PermissionStatus.notDetermined;
    if (isAllowed) {
      print("Di izinkan");
    }
    requestPermission();
  }

  requestPermission() async {
    final res = await SimplePermissions.requestPermission(Permission.Camera);
    print("permission request result is " + res.toString());
  }


  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.white,
      body: Center(
        child: GestureDetector(
          onTap: (){
            scanQr();
          },
            child: Container(
            width: 150.0,
            height: 50.0,
            decoration: BoxDecoration(
              color: Colors.greenAccent[400]
            ),
            child: Center(
              child: Text(_data, style: TextStyle(color: Colors.white),),
            ),
          ),
        ),
      ),
    );
  }
}