react-native-usb-printer

A React Native Library to support USB printer for Android platform

Installation

``
npm install react-native-usb-printer --save
`

Integrate module

To integrate react-native-usb-printer with the rest of your react app just execute:
`
react-native link react-native-usb-printer
`

Usage

`javascript
import { RNUSBPrinter } from 'react-native-usb-printer';

RNUSBPrinter.printText('这是一个测试打印')
RNUSBPrinter.printBillTextWithCut("这是一段打印测试文字")
RNUSBPrinter.printBillTextWithCut("这是一段打印测试文字")
RNUSBPrinter.printBillTextWithCut("这是一段打印测试文字")

`

Example

`javascript

componentDidMount = async () => {
var devices = await RNUSBPrinter.getUSBDeviceList();
vendorID = 1155
productId = 22304
let printedSelected = await RNUSBPrinter.connectPrinter(vendorId, productId);
this.setState(Object.assign({}, this.state, {
printedSelected: printedSelected,
devices: devices,
}));
}

printTest = () => {
if(this.state.printedSelected) {
RNUSBPrinter.printText("这是一段打印测试文字\n");
}else{
console.log("没有找到打印设备")
}

}

printRawDataTest = () => {
if(this.state.printedSelected) {
RNUSBPrinter.printBillTextWithCut("这是一段打印测试文字");
}else{
console.log("没有找到打印设备")
}
}

...

render() {
return (

{
this.state.deviceList.map(device => (

{device_name: ${device.device_name}, device_id: ${device.device_id}, vendor_id: ${device.vendor_id}, product_id: ${device.product_id}}

))
}
this.printTest()}>
Print Text

this.printRawDataTest()}>
Print Bill Text


)
}
...

``