brady_flutter_plugin 1.0.1+1

The official Flutter Plugin to integrate the Brady SDK within a Flutter application. The Brady SDK will allow users to discover, connect, and print to Brady printers.

brady_flutter_plugin

The official Flutter Plugin to integrate the Brady SDK within a Flutter application. The Brady SDK will allow users to discover, connect, and print to Brady printers.

Getting Started

To demonstrate the basic functionalities of the Brady SDK Flutter Plugin, the Dart code used to test this plugin is copy and pasted below.

main.dart

import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:convert';
import 'package:flutter/services.dart';
import 'package:brady_flutter_plugin/brady_flutter_plugin.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _platformVersion = 'Unknown';
  final _bradyFlutterPlugin = BradyFlutterPlugin();

  @override
  void initState() {
    super.initState();
    initPlatformState();
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    String platformVersion;
    // Platform messages may fail, so we use a try/catch PlatformException.
    // We also handle the message potentially returning null.
    try {
      platformVersion =
          await _bradyFlutterPlugin.getPlatformVersion() ?? 'Unknown platform version';
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {
      _platformVersion = platformVersion;
    });
  }

  //Starts a bluetooth scan of nearby devices. Only stops the scan when a connection is successfully made.
  //.getPrinters() can be called to see all of the found devices.
  Future<void> discover() async {
    _bradyFlutterPlugin.startPrinterDiscovery();

    //This is an example of how to use the lastConnectedPrinter to automatically connect to a printer when it's discovered
    //ONLY WORKS IN ANDROID RIGHT NOW.
    String? lastConnectedPrinter = await _bradyFlutterPlugin.getLastConnectedPrinterName();
    if (lastConnectedPrinter != null) {
      connect();
    }
  }
  
  //Connects to a found printer via the printer's name as a String.
  Future<void> connect() async {
    final printerNames = await _bradyFlutterPlugin.getPrinters();
    for (final printer in printerNames) {
      if (printer! == "M211-PGM2112130501019") {
        final connected = await _bradyFlutterPlugin.connectToPrinter(printer);
        if (connected == true) {
          debugPrint("CONNECTED! :)");
          debugPrint(await _bradyFlutterPlugin.getPrinterDetails());
        }
        else {
          debugPrint("FAILED TO CONNECT! :(");
        }
      }
    }
  }

  //Looks for a local template, converts it to a base64 string, and sets the template to the one that will be printed next.
  void setTemplate() async {
    final byteData = await rootBundle.load("assets/flutter_barcode_test.BWT");
    final bytes = byteData.buffer.asUint8List();
    _bradyFlutterPlugin.setTemplate(base64.encode(bytes));
    _bradyFlutterPlugin.setPlaceholderValue("BARCODE 1", "54321");
  }

  //Prints the set template.
  Future<void> print() async {
    final printed = await _bradyFlutterPlugin.print();
    if (printed == true) {
      debugPrint("PRINTING SUCCESSFUL! :)");
    }
    else {
      debugPrint("PRINTING FAILED! :(");
    }
  }

  //Feeds a single label out of the printer.
  Future<void> feed() async {
    final fed = await _bradyFlutterPlugin.feed();
    if (fed == true) {
      debugPrint("FED SUCCESSFUL! :)");
    }
    else {
      debugPrint("FED FAILED! :(");
    }
  }

  //Performs the cut command on the printer.
  Future<void> cut() async {
    final cut = await _bradyFlutterPlugin.cut();
    if (cut == true) {
      debugPrint("CUT SUCCESSFUL! :)");
    }
    else {
      debugPrint("CUT FAILED! :(");
    }
  }

  //Disconnects from the currently connected printer.
  Future<void> disconnect() async {
    final disconnected = await _bradyFlutterPlugin.disconnect();
    if (disconnected == true) {
      debugPrint("DISCONNECT SUCCESSFUL! :)");
    }
    else {
      debugPrint("DISCONNECT FAILED! :(");
    }
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Center(
          child: Column (
            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
            children: <Widget> [
                ElevatedButton(onPressed: () {
                  discover();
                }, child: const Text('Start Discovery')),
                ElevatedButton(onPressed: () {
                  connect();
                }, child: const Text('Connect')),
                ElevatedButton(onPressed: () {
                  setTemplate();
                }, child: const Text('Set Template')),
                ElevatedButton(onPressed: () {
                  print();
                }, child: const Text('Print')),
                ElevatedButton(onPressed: () {
                  feed();
                }, child: const Text('Feed')),
                ElevatedButton(onPressed: () {
                  cut();
                }, child: const Text('Cut')),
                ElevatedButton(onPressed: () {
                  disconnect();
                }, child: const Text('Disconnect')),
            ],
          ),
        ),
      ),
    );
  }
}