React-native-zywell-thermal-printer NPM

react-native-zywell-thermal-printer

Native bridge for Zywell Thermal printer Zywell Official Site

Features

Easy integration with Zywell thermal printers
Supports both iOS and Android
High performance and reliability Compatible with thermal printers, Bluetooth printers, LAN printers, and more.(print text, print image,... With size 80mm, 58mm, A4 with customize, ...)

Since this library serves personal purposes, there will not be many updates. If there are any updates, please create a pull request or an issue. Thank you.

Installation

npm install react-native-zywell-thermal-printer
# or
yarn add react-native-zywell-thermal-printer

Add the following permissions to your AndroidManifest.xml:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
<uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
<uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
<uses-permission android:name="android.permission.READ_MEDIA_IMAGES"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" android:maxSdkVersion="32" />

Please check for additional permissions required by the library.

https://www.npmjs.com/package/react-native-bluetooth-escpos-printer

https://www.npmjs.com/package/react-native-bluetooth-state-manager

https://github.com/HeligPfleigh/react-native-thermal-receipt-printer

Usage

import ZywellPrinter from 'react-native-zywell-thermal-printer';

// Connect to a Bluetooth printer
ZywellPrinter.connectBLE('00:11:22:33:FF:EE')
  .then(() => {
    console.log('Connected to Bluetooth printer');
  })
  .catch((error) => {
    console.error('Failed to connect to Bluetooth printer', error);
  });

// Connect to a network printer
ZywellPrinter.connectNet('192.168.xx.xxx')
  .then(() => {
    console.log('Connected to network printer');
  })
  .catch((error) => {
    console.error('Failed to connect to network printer', error);
  });

// Print an image
ZywellPrinter.printPic('00:11:22:33:FF:EE', 'path/to/image.png', {
  width: 200,
  height: 200,
})
  .then(() => {
    console.log('Printed image');
  })
  .catch((error) => {
    console.error('Failed to print image', error);
  });

// Disconnect from a Bluetooth printer
ZywellPrinter.disconnectPort('00:11:22:33:FF:EE')
  .then(() => {
    console.log('Disconnected from Bluetooth printer');
  })
  .catch((error) => {
    console.error('Failed to disconnect from Bluetooth printer', error);
  });

// Disconnect from a network printer
ZywellPrinter.disconnectNet('192.168.xx.xxx')
  .then(() => {
    console.log('Disconnected from network printer');
  })
  .catch((error) => {
    console.error('Failed to disconnect from network printer', error);
  });

API

`connectBLE(address: string): Promise<void>`

Connect to a Bluetooth printer.

address: The Bluetooth address of the printer.

`connectNet(ip: string): Promise<void>`

Connect to a network printer.

ip: The IP address of the printer.

`printPic(address: string, imagePath: string, options: object): Promise<void>`

Print an image.

address: The Bluetooth address of the printer.
imagePath: The path to the image file.
options: The printing options (e.g., width, height).

`disconnectPort(address: string): Promise<void>`

Disconnect from a Bluetooth printer.

address: The Bluetooth address of the printer.

`disconnectNet(ip: string): Promise<void>`

Disconnect from a network printer.

ip: The IP address of the printer.

Please read the code in ZywellThermalPrinterPackage.java and ZywellThermalPrinter.mm for more APIs provided by the package, or you can check the Example directory.

Ex functions such as: printText, isConnect, readBuffer, clearBuffer, disconnectAll, print once, and print multiple, ...