react-native-escpos-android

A library to use escpos on android with using ESCPOS-ThermalPrinter-Android.

Installation

npm install react-native-escpos-android

Optional setting

Set intent filter if you want to give permission to app at connecting device.

androd/app/src/main/AndroidManifest.xml

<manifest ...>
  <application ...>
    <activity
      android:name=".MainActivity"
    ...>
      <intent-filter>
        <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
      </intent-filter>
      <meta-data
        android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"
        android:resource="@xml/device_filter" />
    </activity>
  </application>
</manifest>

Create android/app/src/main/res/xml/device_filter.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <usb-device vendor-id="1208" /> <!-- seiko epson -->
</resources>

Usage

Write formatted text. The fromat is supplied by ESCPOS-ThermalPrinter-Android.

import EscposAndroid from "react-native-escpos-android";

var text =
  "[C]================================\n" +
  "[L]\n" +
  "[L]<b>BEAUTIFUL SHIRT</b>[R]9.99e\n" +
  "[L]  + Size : S\n" +
  "[L]\n" +
  "[L]<b>AWESOME HAT</b>[R]24.99e\n" +
  "[L]  + Size : 57/58\n" +
  "[L]\n" +
  "[C]--------------------------------\n" +
  "[R]TOTAL PRICE :[R]34.98e\n" +
  "[R]TAX :[R]4.23e\n" +
  "[L]\n" +
  "[C]================================\n" +
  "[L]\n" +
  "[L]<font size='tall'>Customer :</font>\n" +
  "[L]Raymond DUPONT\n" +
  "[L]5 rue des girafes\n" +
  "[L]31547 PERPETES\n" +
  "[L]Tel : +33801201456\n" +
  "[L]\n" +
  "[C]<barcode type='ean13' height='10'>831254784551</barcode>\n" +
  "[C]<qrcode size='20'>http://www.developpeur-web.dantsu.com/</qrcode>"
await EscposAndroid.write({ text , cut: true });

You can write raw data.

let raw = [
  0x1b, 0x40, // initialize
  0x0a, // change line
  0x0a, // change line
  0x0a, // change line
  0x1c, 0x43, 0x01, // set shift-jis
  0x1b, 0x64, 0x02, // feed
  0x0a, // change line
  // 0x1b, 0x1c, 0x26, // kanji mode
  0x82, 0xA0, 0x82, 0xA2, 0x82, 0xA4, // あいう in shift-jis
  0x0a, // change line
  0x8a, 0xbf, 0x8e, 0x9a,　// 漢字 in shift-jis
  0x0a, // change line
  0x1b, 0x64, 0x02, // feed
  0x1D, 0x56, 0x01, // cut
]
await EscposAndroid.write({ raw });

License

MIT