flutter_datawedge 2.0.0-dev.1

A Flutter package to communicate with Zebra DataWedge scanners using the DataWedge Intent API

example/lib/main.dart

import 'dart:async';
import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter_datawedge/flutter_datawedge.dart';
import 'package:flutter_datawedge/models/action_result.dart';
import 'package:flutter_datawedge/models/scan_result.dart';
import 'package:flutter_datawedge/models/scanner_status.dart';

void main() {
  runApp(
    MaterialApp(
      title: 'Flutter DataWedge Example',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyApp(),
    ),
  );
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  late StreamSubscription<ScanResult> onScanResultListener;
  late StreamSubscription<ScannerStatus> onScannerStatusListener;
  late StreamSubscription<ActionResult> onScannerEventListener;

  List<ScanResult> scanResults = [];
  String _lastStatus = '';
  late FlutterDataWedge fdw;
  Future<void>? initScannerResult;
  @override
  void initState() {
    super.initState();
    initScannerResult = initScanner();
  }

  Future<void> initScanner() async {
    if (Platform.isAndroid) {
      fdw = FlutterDataWedge(profileName: 'FlutterDataWedge');
      onScanResultListener = fdw.onScanResult
          .listen((result) => setState(() => scanResults.add(result)));
      onScannerStatusListener = fdw.onScannerStatus.listen(
          (status) => setState(() => _lastStatus = status.status.toString()));
      await fdw.initialize();
    }
  }

  @override
  void dispose() {
    onScanResultListener.cancel();
    onScannerStatusListener.cancel();
    onScannerEventListener.cancel();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Flutter DataWedge Example'),
      ),
      body: FutureBuilder(
          future: initScannerResult,
          builder: (context, snapshot) {
            if (snapshot.connectionState != ConnectionState.done) {
              return Center(child: CircularProgressIndicator());
            }
            if (snapshot.hasError) {
              return Center(child: Text('Error: ${snapshot.error}'));
            }
            return Center(
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.center,
                mainAxisAlignment: MainAxisAlignment.center,
                mainAxisSize: MainAxisSize.max,
                children: [
                  Text('Last codes:',
                      style:
                          TextStyle(fontWeight: FontWeight.bold, fontSize: 20)),
                  SizedBox(
                    width: double.infinity,
                    height: MediaQuery.of(context).size.height * 0.4,
                    child: ListView.separated(
                      reverse: true,
                      itemCount: scanResults.length,
                      itemBuilder: (context, index) => ListTile(
                        title: Text('$index: ${scanResults[index].data}'),
                      ),
                      separatorBuilder: (context, index) => const Divider(),
                    ),
                  ),
                  Row(
                    children: [
                      Expanded(
                        child: Text('Last status:',
                            style: TextStyle(
                                fontWeight: FontWeight.bold, fontSize: 20)),
                      ),
                      Expanded(
                        child: Text(_lastStatus,
                            style: Theme.of(context).textTheme.headlineSmall),
                      ),
                    ],
                  ),
                  Row(
                    children: [
                      Expanded(
                        child: ElevatedButton(
                          onPressed: () async => fdw.enableScanner(true),
                          child: Text('Enable Scanner'),
                        ),
                      ),
                      Expanded(
                        child: ElevatedButton(
                          onPressed: () async => fdw.enableScanner(false),
                          child: Text('Disable Scanner'),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    children: [
                      Expanded(
                        child: ElevatedButton(
                          onPressed: () => fdw.activateScanner(true),
                          child: Text('Activate Scanner'),
                        ),
                      ),
                      Expanded(
                        child: ElevatedButton(
                          onPressed: () => fdw.activateScanner(false),
                          child: Text('Deactivate Scanner'),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    children: [
                      Expanded(
                        child: ElevatedButton(
                          onPressed: () => fdw.scannerControl(true),
                          child: Text('Scanner Control Activate'),
                        ),
                      ),
                      Expanded(
                        child: ElevatedButton(
                          onPressed: () => fdw.scannerControl(false),
                          child: Text('Scanner Control DeActivate'),
                        ),
                      ),
                    ],
                  ),
                ],
              ),
            );
          }),
    );
  }
}