Flutter plugin to connect and print on ESC POS Printers.
Use this package as a library
- Depend on it Add this to your package's pubspec.yaml file:
dependencies:
escposprinter:
git:
url: https://github.com/marcusfelix/esc-pos-printer-flutter.git
ref: master- Install it You can install packages from the command line:
with Flutter:
$ flutter packages get
Alternatively, your editor might support flutter packages get. Check the docs for your editor to learn more.
- Import it Now in your Dart code, you can use:
import 'package:flutter_webview_plugin/flutter_webview_plugin.dart';import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:escposprinter/escposprinter.dart';
void main() => runApp(new MyApp());
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => new _MyAppState();
}
class _MyAppState extends State<MyApp> {
List devices = [];
bool connected = false;
@override
initState() {
super.initState();
_list();
}
_list() async {
List returned;
try {
returned = await Escposprinter.getUSBDeviceList;
} on PlatformException {
//response = 'Failed to get platform version.';
}
setState((){
devices = returned;
});
}
_connect(int vendor, int product) async {
bool returned;
try {
returned = await Escposprinter.connectPrinter(vendor, product);
} on PlatformException {
//response = 'Failed to get platform version.';
}
if(returned){
setState((){
connected = true;
});
}
}
_print() async {
try {
await Escposprinter.printText("Testing ESC POS printer...");
} on PlatformException {
//response = 'Failed to get platform version.';
}
}
@override
Widget build(BuildContext context) {
return new MaterialApp(
home: new Scaffold(
appBar: new AppBar(
title: new Text('ESC POS'),
actions: <Widget>[
new IconButton(
icon: new Icon(Icons.refresh),
onPressed: () {
_list();
}
),
connected == true ? new IconButton(
icon: new Icon(Icons.print),
onPressed: () {
_print();
}
) : new Container(),
],
),
body: devices.length > 0 ? new ListView(
scrollDirection: Axis.vertical,
children: _buildList(devices),
) : null,
),
);
}
List<Widget> _buildList(List devices){
return devices.map((device) => new ListTile(
onTap: () {
_connect(int.parse(device['vendorid']), int.parse(device['productid']));
},
leading: new Icon(Icons.usb),
title: new Text(device['manufacturer'] + " " + device['product']),
subtitle: new Text(device['vendorid'] + " " + device['productid']),
)).toList();
}
}
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