noAntrian

import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'detailAntrian.dart';
import 'package:qr_flutter/qr_flutter.dart';

Future<String> getAntrian() async{
  SharedPreferences pref = await SharedPreferences.getInstance();
  String antri = pref.get("noantrian");

  return antri;
}

Future<String> getTujuan() async{
  SharedPreferences pref = await SharedPreferences.getInstance();
  String tu = pref.get("tujuan");

  return tu;
}

//Future<String> getQrPref() async{
//  SharedPreferences pr = await SharedPreferences.getInstance();
//  String qr = pr.getString("qrcode");
//
//
//  return qr;
//}

class AntrianMata extends StatefulWidget {
  @override
  _AntrianMataState createState() => _AntrianMataState();
}

class _AntrianMataState extends State<AntrianMata> {

  goHome(){
    setState(() {
      Navigator.of(context).push(
          new MaterialPageRoute(builder: (BuildContext context)=> new DetailAntrian(),
          )
      );
    });
  }

  String _antri = ""; String _tujuan = "";


  void updateAntrian(String antri){
    setState(() {
      this._antri = antri;
    });
  }

  void updateTujuan(String tujuan){
    setState(() {
      this._tujuan = tujuan;
    });
  }

  @override
  void initState() {
    getAntrian().then(updateAntrian);
    getTujuan().then(updateTujuan);
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      resizeToAvoidBottomPadding: false,
      appBar: new AppBar(
        title: new Text("No Antrian"),
        centerTitle: true,
        backgroundColor: Color(0xFF81C6F0),
        leading: new IconButton(icon: new Icon(Icons.arrow_back),
            onPressed: goHome
        ),
      ),
      body: Stack(
        children: <Widget>[
          Align(
            alignment: Alignment(0.0, -0.6),
            child: Stack(
              alignment: Alignment(1.0, 1.0),
              children: <Widget>[
                Container(
                  width: 450.0,
                  height: 450.0,
                  color: Colors.white,
                  child: new Column(
                    children: <Widget>[
                      new Center(
                        child: QrImage(
                          data: "Belum Ada API",
                          version: 6,
                          errorCorrectionLevel: QrErrorCorrectLevel.M,
                          foregroundColor: Color(0xFFF15946),
                          size: 300,
                          padding: EdgeInsets.all(20.0),
                        ),
                      ),
                      new Padding(padding: new EdgeInsets.only(top: 5.0)),
                      new Text("$_antri", style: TextStyle(color: Colors.black, fontSize: 20.0, fontWeight: FontWeight.bold),textAlign: TextAlign.center,),
                      new Padding(padding: new EdgeInsets.only(top: 10.0)),
                      new Text("Tujuan : $_tujuan", style: TextStyle(color: Colors.black, fontSize: 12.0), textAlign: TextAlign.center,),
                      new Padding(padding: new EdgeInsets.only(top: 10.0)),
                      new Image.asset('assets/divider.png'),
                      new Text("                       Harap Datang Tepat Pada Waktunya"
                          "\n  Jika Anda Datang Melebihi Waktu yang Ditentukan maka"
                          "\n            Anda Harus Mengambil Nomor Antrian di Loket"),

                    ],
                  ),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }
}