getnet_pos 0.4.7

  • Readme
  • Changelog
  • Example
  • Installing
  • 56

getnet_pos #

A plugin wrapper to use getnet pos hardware sdk in your flutter apps.

ONLY WORKS ON ANDROID FOR NOW

Usage #

Configure your project #

Change minSdkVersion to 22 in your app

 defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.example.test_getnet_pos_package"
        minSdkVersion 22
        targetSdkVersion 28
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }

You can pass a list of string as argument. The first element of the list is the header. Print barcode and QrCode if find a text that match the given patterns.

import 'package:getnet_pos/getnet_pos.dart';

...

try {
  GetnetPos.print(
    [
     "Header is the first line",
     "Content line 1",
     "Content line 2",
    ],
    printBarcode = false, //default is true
    barcodePattern = '^\\d{1,}.\$', //by default
    qrCodePattern = '^\\d{1,}.\$', //by default
  );
} on PlatformException {
 ...
}

...

getMifareCardSN method #

You can get the card serial number via contactless just invoking this method.

import 'package:getnet_pos/getnet_pos.dart';

...

GetnetPos.getMifareCardSN().then((cardSerialNumber) {
  // Do anything with serial number here!
  debugPrint(cardSerialNumber);
}).catchError((error) => debugPrint(error));

...

scan method #

You can scan qrcode/barcode using the device camera with this method.

import 'package:getnet_pos/getnet_pos.dart';

...

GetnetPos.scan().then((scanResult) {
  // Do anything with scan result!
  debugPrint(scanResult);
}).catchError((error) => debugPrint(error)); // if cancelled or timeout is reached an error is raised.

...

0.1.0 #

  • Print

0.1.0+2 #

  • adding uses permission to getnet pos service

0.1.0+3 #

  • including gradle modules

0.1.1 #

  • dependency graph

0.1.1+1 #

  • gradle plugin fixes

0.1.1+3 #

  • external dependency configuration

0.1.2 #

  • bug fix on printer stub callback

0.1.2+1 #

  • decrease font size

0.2.0 #

  • print qrcode
  • print barcode

0.2.0+1 #

  • refactor qrcode pattern

0.2.0+2 #

  • include barcode numbers before barcode itself

0.2.0+3 #

  • trim barcode

0.2.1 #

  • fix barcode regexp

0.2.1+1 #

  • Dependencies adjustment

0.2.2 #

  • printbarcode flag

0.3.0 #

  • Get card serial number through MIFARE

0.3.1 #

  • Fix MIFARE

0.3.2 #

  • Logging errors

0.3.3 #

  • Checking service initialization

0.3.4 #

  • Service halt

0.4.0 #

  • scanner

0.4.1 #

  • fix service initialization

0.4.2 #

  • retries on read card failure occurs

0.4.3 #

  • Refatoring to better collect errors

0.4.4 #

  • Print returns future

0.4.7 #

  • Examples

example/lib/main.dart

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

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Teste GetNet'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  String serviceStatus;

  String printerStatus;

  String mifareStatus;

  String scannerStatus;

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            LabeledValue('Service Status', serviceStatus),
            LabeledValue('Printer:', printerStatus),
            LabeledValue('Mifare:', mifareStatus),
            LabeledValue('Scanner:', scannerStatus),
          ],
        ),
      ),
      floatingActionButton: Padding(
        padding: const EdgeInsets.only(bottom: 8.0),
        child: Row(
          mainAxisAlignment: MainAxisAlignment.end,
          children: <Widget>[
            FloatingActionButton(
              onPressed: nfc,
              child: Icon(Icons.airplay),
            ),
            SizedBox(
              width: 10,
            ),
            FloatingActionButton(
              onPressed: scan,
              backgroundColor: Colors.red[900],
              child: Icon(Icons.camera_alt),
            ),
            SizedBox(
              width: 10,
            ),
            FloatingActionButton(
              onPressed: impressao,
              backgroundColor: Colors.green[900],
              child: Icon(Icons.print),
            ),
          ],
        ),
      ),
    );
  }

  void impressao() {
    setState(() {
      printerStatus = null;
    });
    GetnetPos.print(
      [
        "Header is the first line",
        "Content line 1",
        "Content line 2",
      ],
      printBarcode: false, //default is true
    )
        .then((_) => setState(() {
              printerStatus = 'Normal';
            }))
        .catchError((e) => setState(() {
              printerStatus = 'Error: ${e.code} -> ${e.message}';
            }));
  }

  void nfc() {
    setState(() {
      mifareStatus = 'Mantenha o cartão próximo!';
    });
    Future.delayed(Duration(seconds: 2), () {
      GetnetPos.getMifareCardSN()
          .then((csn) => setState(() {
                mifareStatus = 'Leitura: $csn';
              }))
          .catchError((e) => setState(() {
                mifareStatus = 'Error: ${e.code} -> ${e.message}';
              }));
    });
  }

  void checkService() async {
    var status = await GetnetPos.checkService(label: '');
    setState(() {
      serviceStatus = status;
    });
  }

  void scan() {
    setState(() {
      scannerStatus = null;
    });
    GetnetPos.scan()
        .then((result) => setState(() {
              scannerStatus = 'Leitura: $result';
            }))
        .catchError((e) => setState(() {
              debugPrint(e.toString());
              scannerStatus = 'Error: ${e.code} -> ${e.message}';
            }));
  }
}

class LabeledValue extends StatelessWidget {
  final String label;
  final String value;
  const LabeledValue(
    this.label,
    this.value, {
    Key key,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.all(8.0),
      child: RichText(
        text: TextSpan(
          text: label,
          style: Theme.of(context).textTheme.caption.copyWith(fontWeight: FontWeight.bold),
          children: [
            TextSpan(
              text: value ?? ' SEM RESPOSTA ',
              style: Theme.of(context).textTheme.caption,
            ),
          ],
        ),
      ),
    );
  }
}

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:


dependencies:
  getnet_pos: ^0.4.7

2. Install it

You can install packages from the command line:

with Flutter:


$ flutter pub get

Alternatively, your editor might support flutter pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:


import 'package:getnet_pos/getnet_pos.dart';
  
Popularity:
Describes how popular the package is relative to other packages. [more]
13
Health:
Code health derived from static analysis. [more]
100
Maintenance:
Reflects how tidy and up-to-date the package is. [more]
100
Overall:
Weighted score of the above. [more]
56
Learn more about scoring.

We analyzed this package on Apr 8, 2020, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.7.1
  • pana: 0.13.6
  • Flutter: 1.12.13+hotfix.8

Health suggestions

Format lib/getnet_pos.dart.

Run flutter format to format lib/getnet_pos.dart.

Dependencies

Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.1.0 <3.0.0
flutter 0.0.0
Transitive dependencies
collection 1.14.11 1.14.12
meta 1.1.8
sky_engine 0.0.99
typed_data 1.1.6
vector_math 2.0.8
Dev dependencies
flutter_test