Fork of react-native-printer. A React Native Library to support USB/BLE/Net printer
npm install react-native-thermal-receipt-printerreact-native-printer and add implement for auto connect printer with usb
yarn add react-native-thermal-receipt-printer
`
Troubleshoot
- when install in react-native version >= 0.60, xcode show this error
`
duplicate symbols for architecture x86_64
`
that because the .a library uses CocoaAsyncSocket library and Flipper uses it too
_Podfile_
`diff
...
use_native_modules!
# Enables Flipper.
#
# Note that if you have use_frameworks! enabled, Flipper will not work and
# you should disable these next few lines.
# add_flipper_pods!
# post_install do |installer|
# flipper_post_install(installer)
# end
...
`
and comment out code related to Flipper in ios/AppDelegate.m
Support
| Printer | Android | IOS |
| ---------- | ------------------ | ------------------ |
| USBPrinter | :heavy_check_mark: | |
| BLEPrinter | :heavy_check_mark: | :heavy_check_mark: |
| NetPrinter | :heavy_check_mark: | :heavy_check_mark: |
Predefined tag
| Tags | Description |
|:-------------:|:---------------------:|
| C | Center |
| D | Medium font |
| B | Large font |
| M | Medium font |
| CM | Medium font, centered |
| CB | Medium font, centered |
| CD | Large font, centered |
Development workflow
To get started with the project, run yarn bootstrap in the root directory to install the required dependencies for each package:
`sh
yarn bootstrap
`
While developing, you can run the example app to test your changes.
To start the packager:
`sh
yarn example start
`
To run the example app on Android:
`sh
yarn example dev-android
`
To run the example app on iOS:
`sh
yarn example ios
`
Usage
`javascript
import {
USBPrinter,
NetPrinter,
BLEPrinter,
} from "react-native-thermal-receipt-printer";
USBPrinter.printText("sample text ");
USBPrinter.printBill("sample bill ");
`
Example
$3
`typescript
interface IUSBPrinter {
device_name: string;
vendor_id: number;
product_id: number;
}
`
`javascript
const [printers, setPrinters] = useState([]);
const [currentPrinter, setCurrentPrinter] = useState();
useEffect = () => {
if(Platform.OS == 'android'){
USBPrinter.init().then(()=> {
//list printers
USBPrinter.getDeviceList().then(setPrinters);
})
}
}
const _connectPrinter = (printer) => USBPrinter.connectPrinter(printer.vendorID, printer.productId).then(() => setCurrentPrinter(printer))
const printTextTest = () => {
currentPrinter && USBPrinter.printText("sample text \n");
}
const printBillTest = () => {
currentPrinter && USBPrinter.printBill("sample bill ");
}
...
return (
{
printers.map(printer => (
_connectPrinter(printer)}>
{ device_name: ${printer.device_name}, device_id: ${printer.device_id}, vendor_id: ${printer.vendor_id}, product_id: ${printer.product_id}}
))
}
Print Text
Print Bill Text
)
...
`
$3
`typescript
interface IBLEPrinter {
device_name: string;
inner_mac_address: string;
}
`
`javascript
const [printers, setPrinters] = useState([]);
const [currentPrinter, setCurrentPrinter] = useState();
useEffect(() => {
BLEPrinter.init().then(()=> {
BLEPrinter.getDeviceList().then(setPrinters);
});
}, []);
_connectPrinter => (printer) => {
//connect printer
BLEPrinter.connectPrinter(printer.inner_mac_address).then(
setCurrentPrinter,
error => console.warn(error))
}
printTextTest = () => {
currentPrinter && BLEPrinter.printText("sample text \n");
}
printBillTest = () => {
currentPrinter && BLEPrinter.printBill("sample bill ");
}
...
return (
{
this.state.printers.map(printer => (
_connectPrinter(printer)}>
{ device_name: ${printer.device_name}, inner_mac_address: ${printer.inner_mac_address}}
))
}
Print Text
Print Bill Text
)
...
`
$3
`typescript
interface INetPrinter {
device_name: string;
host: string;
port: number;
}
`
_Note:_ get list device for net printers is support scanning in local ip but not recommended
`javascript
componentDidMount = () => {
NetPrinter.init().then(() => {
this.setState(Object.assign({}, this.state, {printers: [{host: '192.168.10.241', port: 9100}]}))
})
}
_connectPrinter => (host, port) => {
//connect printer
NetPrinter.connectPrinter(host, port).then(
(printer) => this.setState(Object.assign({}, this.state, {currentPrinter: printer})),
error => console.warn(error))
}
printTextTest = () => {
if (this.state.currentPrinter) {
NetPrinter.printText("sample text \n");
}
}
printBillTest = () => {
if(this.state.currentPrinter) {
NetPrinter.printBill("sample bill ");
}
}
...
render() {
return (
{
this.state.printers.map(printer => (
this._connectPrinter(printer.host, printer.port)}>
{ device_name: ${printer.device_name}, host: ${printer.host}, port: ${printer.port}}
))
}
this.printTextTest()}>
Print Text
this.printBillTest()}>
Print Bill Text
)
}
...
``