React Native Nyx Printer - Usage Examples

This document provides examples for using the Nyx Printer methods in a React Native project, including printText, printBarcode, printQrCode, printBitmap, and paperOut. The printText method accepts optional formatting.

Installation

Install the react-native-nyx-printer module with npm:

npm install react-native-nyx-printer

Usage Examples

1. multiply(a, b)

Multiplies two numbers asynchronously.

import { multiply } from 'react-native-nyx-printer';

multiply(5, 10).then(result => {
  console.log("Result:", result); // Output: 50
});

2. printText(text, textFormat)

Prints text with an optional textFormat object for custom styling.

• Acceptable textFormat options:
  • fontSize (number): Text font size.
  • bold (boolean): Bold text if true.
  • alignment (string): Options are "left", "center", "right".
  • underline (boolean): Underlines text if true.

Example:

import { printText } from 'react-native-nyx-printer';

const textStyle = { fontSize: 14, bold: true, alignment: "center", underline: false };
printText("Hello, World!", textStyle).then(response => {
  console.log("Text printed:", response);
});

3. printBarcode(content, width, height)

Prints a barcode with specified width and height.

import { printBarcode } from 'react-native-nyx-printer';

printBarcode("1234567890", 100, 50).then(response => {
  console.log("Barcode printed:", response);
});

4. printQrCode(content, width, height)

Prints a QR code with specified width and height.

import { printQrCode } from 'react-native-nyx-printer';

printQrCode("https://example.com", 100, 100).then(response => {
  console.log("QR Code printed:", response);
});

5. printBitmap(inputBytes)

Prints a bitmap from a byte array.

import { printBitmap } from 'react-native-nyx-printer';

const bitmapData = [/* array of byte values */];
printBitmap(bitmapData).then(response => {
  console.log("Bitmap printed:", response);
});

6. paperOut()

Checks if the paper is out.

import { paperOut } from 'react-native-nyx-printer';

paperOut().then(response => {
  console.log(response === 1 ? "Paper is out" : "Paper is available");
});

These examples cover essential usage patterns.

Contributing

See the contributing guide to learn how to contribute to the repository and the development workflow.

License

MIT

Credits

yyzz2333/NyxPrinterClient

Aladdin16659/NyxPrinter