sunmi_printer_v2 1.0.1-null-safety.2

Printer Plugin for Sunmi V2.

example/lib/main.dart

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:sunmi_printer_v2/sunmi_printer_v2.dart';

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

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

class _MyAppState extends State<MyApp> {
  String? _serialNo = 'Unknown';

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

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    String? serialNo;
    // Platform messages may fail, so we use a try/catch PlatformException.
    try {
      serialNo = await SunmiPrinterV2.getPrinterSerialNo;
    } on PlatformException {
      serialNo = 'Failed to get serial no.';
    }

    // 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(() {
      _serialNo = serialNo;
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.orange,
      ),
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Sunmi Test app'),
        ),
        body: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Center(
              child: Text('Printer SN: $_serialNo\n'),
            ),
            ElevatedButton(
              onPressed: () async {
                await SunmiPrinterV2.printSample();
              },
              child: Text("Print"),
            ),
            ElevatedButton(
              onPressed: () async {
                await SunmiPrinterV2.feedPaper();
              },
              child: Text("Feed Paper"),
            ),
            ElevatedButton(
              onPressed: () async {
                await SunmiPrinterV2.printBarcode(
                  barcode: "123456789012",
                  type: BarcodeType.ean_13,
                  textPosition: BarcodeTextPosition.noText,
                );
                await SunmiPrinterV2.feedPaper();
              },
              child: Text("Print Barcode"),
            ),
            ElevatedButton(
              onPressed: () async {
                await SunmiPrinterV2.initPrinter();
                await SunmiPrinterV2.printLineDivider();
                await SunmiPrinterV2.setBold(true);
                await SunmiPrinterV2.printTable(
                  texts: ["Item", "Price"],
                );
                await SunmiPrinterV2.setBold(false);
                await SunmiPrinterV2.printLineDivider();
                await SunmiPrinterV2.printText("Coca Cola 300ml",
                    isBold: true, size: 28);
                await SunmiPrinterV2.lineWrap();
                await SunmiPrinterV2.setBold(false);
                await SunmiPrinterV2.printTable(
                    texts: ["10.000  250.00", "2500.00"], widths: [2, 1]);
                await SunmiPrinterV2.printLineDivider();
                await SunmiPrinterV2.feedPaper();
              },
              child: Text("Print Table"),
            ),
            ElevatedButton(
              onPressed: () async {
                await SunmiPrinterV2.initPrinter();
                await SunmiPrinterV2.setAntiWhite(true);
                await SunmiPrinterV2.setAlign(PrinterTextAlignment.center);
                await SunmiPrinterV2.printText("Genius Soft", size: 30);
                await SunmiPrinterV2.setAntiWhite(false);
                await SunmiPrinterV2.initPrinter();
                await SunmiPrinterV2.feedPaper();
              },
              child: Text("Anti White"),
            ),
          ],
        ),
      ),
    );
  }
}