cssd/lib/pages/LabelPages/label_scan_screen.dart

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

import '../../config/routes.dart';
import '../../providers/connectivity.dart';
import '../../widgets/Global/internet_error.dart';
import '../../widgets/LabelScreens/Scan/input_box.dart';
import '../../widgets/LabelScreens/Scan/save_button.dart';
import '../../widgets/LabelScreens/Scan/scan_box.dart';

// import 'package:flutter/services.dart';
// import 'package:barcode_scan2/barcode_scan2.dart';

class LabelScanScreen extends StatefulWidget {
  // static const route = '/LabelScanScreen';
  @override
  State<StatefulWidget> createState() {
    return _LabelScanScreenState();
  }
}

class _LabelScanScreenState extends State<LabelScanScreen> {
  String testCode = "";
  TextEditingController idCTRL = new TextEditingController();
  final _form = GlobalKey<FormState>();

  @override
  Widget build(BuildContext context) {
    final _media = MediaQuery.of(context);
    // final double _pixelRatio = (_media.size.height / _media.size.width * 7 / 5);
    final double _devicewidth = _media.size.width;
    final double _deviceBlockSize = _devicewidth / 100;
    return PopScope(
      canPop: false,
      onPopInvoked: (didPop) {
        if (didPop) return;
        Navigator.of(context).pushNamed(Routes.homePage);
      },
      child: SafeArea(
        child: GestureDetector(
          onTap: () {
            FocusManager.instance.primaryFocus?.unfocus();
          },
          child: Scaffold(
            appBar: AppBar(
              titleSpacing: -10,
              title: Text(
                'Labels',
                style: TextStyle(
                  color: Colors.white,
                ),
              ),
              backgroundColor: Colors.black,
              leading: IconButton(
                icon: Icon(
                  Icons.keyboard_arrow_left,
                  color: Colors.white,
                  size: 35,
                ),
                onPressed: () => Navigator.of(context).pop(),
              ),
            ),
            body: Consumer<ConnectivityProvider>(
              builder: (ct, connection, _) {
                return connection.conStatus != 'offline'
                    ? ListView(
                        padding: EdgeInsets.symmetric(horizontal: 20),
                        children: <Widget>[
                          Container(
                            padding: EdgeInsets.only(top: 30),
                            child: Text(
                              'Looking for a Label?',
                              textAlign: TextAlign.left,
                              style: TextStyle(
                                color: Colors.black,
                                fontSize: 5.5 * _deviceBlockSize,
                                fontWeight: FontWeight.w700,
                                letterSpacing: 3,
                              ),
                            ),
                          ),
                          LabelScanBox(),
                          SizedBox(
                            height: 10,
                          ),
                          Form(
                            key: _form,
                            child: LabelScanInputBox(
                              idCTRL: idCTRL,
                              deviceBlockSize: _deviceBlockSize,
                            ),
                          ),
                          SizedBox(
                            height: 70,
                          ),
                          FilterScanSaveButton(
                            form: _form,
                            idCTRL: idCTRL,
                            deviceBlockSize: _deviceBlockSize,
                          ),
                        ],
                      )
                    : ConnectionErrorBox();
              },
            ),
          ),
        ),
      ),
    );
  }
}