cssd/lib/widgets/LabelScreens/Scan/scan_box.dart

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

class LabelScanBox extends StatelessWidget {
  const LabelScanBox({
    Key? key,
  }) : super(key: key);
  Future<String> scan() async {
    try {
      var barcode = await BarcodeScanner.scan();
      if (barcode.type.name == 'Cancelled') {
        return 'cancel';
      } else if (barcode.type.name == 'Failed') {
        return 'error';
      } // print(barcode.split('/'));
      try {
        var id = barcode.rawContent.contains('www.cssd-doc.com')
            ? barcode.rawContent.split('/')[5]
            : barcode.rawContent;
        return id;
      } catch (_) {
        return 'null';
      }
    } on PlatformException catch (_) {
      return 'access';
    } catch (_) {
      return 'error';
    }

    // } on FormatException {
    // setState(() => this.testCode =
    //     'null (User returned using the "back"-button before scanning anything. Result)');
    // } catch (e) {
    // setState(() => this.testCode = 'Unknown error: $e');
    // }
    // return null;
  }

  @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 GestureDetector(
      child: Container(
        margin: EdgeInsets.symmetric(vertical: 10),
        height: 200,
        decoration: BoxDecoration(border: Border.all()),
        child: Center(
          child: Text(
            'Please Scan The Label Barcode',
            style: TextStyle(
              color: Colors.black,
              fontSize: 5 * _deviceBlockSize,
              fontWeight: FontWeight.w100,
              letterSpacing: 3,
            ),
            textAlign: TextAlign.center,
          ),
        ),
      ),
      onTap: () {
        scan().then(
          (String result) {
            if (result == 'cancel') {
              print('cancel');
            } else if (result == 'error') {
              print('error');
            } else if (result == 'access') {
              print('access');
            } else {
              launch(
                'https://cssd-doc.com/Show/Label/$result',
              );
              // Navigator.of(context).pushNamed(
              //   Routes.labelDetailScreen,
              //   arguments: result,
              // );
            }
          },
        );
      },
    );
  }
}