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A React Native Library to support USB/BLE/Net printer","maintainers":[{"name":"bluub1t","email":"bluubits@gmail.com"}],"readme":"# react-native-thermal-receipt-printer\n\nFork of `react-native-printer` and add implement for auto connect printer with usb\nA React Native Library to support USB/BLE/Net printer\n\n\n\n## Installation\n\n```\nyarn add react-native-thermal-receipt-printer\n```\n\n## Troubleshoot\n\n- when install in `react-native` version >= 0.60, xcode show this error\n\n```\nduplicate symbols for architecture x86_64\n```\n\nthat because the .a library uses [CocoaAsyncSocket](https://github.com/robbiehanson/CocoaAsyncSocket) library and Flipper uses it too\n\n_Podfile_\n\n```diff\n...\n use_native_modules!\n\n # Enables Flipper.\n #\n # Note that if you have use_frameworks! enabled, Flipper will not work and\n # you should disable these next few lines.\n # add_flipper_pods!\n # post_install do |installer|\n # flipper_post_install(installer)\n # end\n...\n```\n\nand comment out code related to Flipper in `ios/AppDelegate.m`\n\n## Support\n\n| Printer | Android | IOS |\n| ---------- | ------------------ | ------------------ |\n| USBPrinter | :heavy_check_mark: | |\n| BLEPrinter | :heavy_check_mark: | :heavy_check_mark: |\n| NetPrinter | :heavy_check_mark: | :heavy_check_mark: |\n\n## Predefined tag\n| Tags | Description |\n|:-------------:|:---------------------:|\n| C | Center |\n| D | Medium font |\n| B | Large font |\n| M | Medium font |\n| CM | Medium font, centered |\n| CB | Medium font, centered |\n| CD | Large font, centered |\n\n## Development workflow\n\nTo get started with the project, run `yarn bootstrap` in the root directory to install the required dependencies for each package:\n\n```sh\nyarn bootstrap\n```\n\nWhile developing, you can run the [example app](/example/) to test your changes.\n\nTo start the packager:\n\n```sh\nyarn example start\n```\n\nTo run the example app on Android:\n\n```sh\nyarn example dev-android\n```\n\nTo run the example app on iOS:\n\n```sh\nyarn example ios\n```\n\n## Usage\n\n```javascript\nimport {\n USBPrinter,\n NetPrinter,\n BLEPrinter,\n} from \"react-native-thermal-receipt-printer\";\n\nUSBPrinter.printText(\"sample text\");\nUSBPrinter.printBill(\"sample bill\");\n```\n\n## Example\n\n### USBPrinter (only support android)\n\n```typescript\ninterface IUSBPrinter {\n device_name: string;\n vendor_id: number;\n product_id: number;\n}\n```\n\n```javascript\n const [printers, setPrinters] = useState([]);\n const [currentPrinter, setCurrentPrinter] = useState();\n\n useEffect = () => {\n if(Platform.OS == 'android'){\n USBPrinter.init().then(()=> {\n //list printers\n USBPrinter.getDeviceList().then(setPrinters);\n })\n }\n }\n\n const _connectPrinter = (printer) => USBPrinter.connectPrinter(printer.vendorID, printer.productId).then(() => setCurrentPrinter(printer))\n\n const printTextTest = () => {\n currentPrinter && USBPrinter.printText(\"sample text\\n\");\n }\n\n const printBillTest = () => {\n currentPrinter && USBPrinter.printBill(\"sample bill\");\n }\n\n ...\n\n return (\n \n {\n printers.map(printer => (\n _connectPrinter(printer)}>\n {`device_name: ${printer.device_name}, device_id: ${printer.device_id}, vendor_id: ${printer.vendor_id}, product_id: ${printer.product_id}`}\n \n ))\n }\n \n Print Text\n \n \n Print Bill Text\n \n \n )\n\n ...\n\n```\n\n### BLEPrinter\n\n```typescript\ninterface IBLEPrinter {\n device_name: string;\n inner_mac_address: string;\n}\n```\n\n```javascript\n const [printers, setPrinters] = useState([]);\n const [currentPrinter, setCurrentPrinter] = useState();\n\n useEffect(() => {\n BLEPrinter.init().then(()=> {\n BLEPrinter.getDeviceList().then(setPrinters);\n });\n }, []);\n\n _connectPrinter => (printer) => {\n //connect printer\n BLEPrinter.connectPrinter(printer.inner_mac_address).then(\n setCurrentPrinter,\n error => console.warn(error))\n }\n\n printTextTest = () => {\n currentPrinter && BLEPrinter.printText(\"sample text\\n\");\n }\n\n printBillTest = () => {\n currentPrinter && BLEPrinter.printBill(\"sample bill\");\n }\n\n ...\n\n return (\n \n {\n this.state.printers.map(printer => (\n _connectPrinter(printer)}>\n {`device_name: ${printer.device_name}, inner_mac_address: ${printer.inner_mac_address}`}\n \n ))\n }\n \n Print Text\n \n \n Print Bill Text\n \n \n )\n\n ...\n\n```\n\n### NetPrinter\n\n```typescript\ninterface INetPrinter {\n device_name: string;\n host: string;\n port: number;\n}\n```\n\n_Note:_ get list device for net printers is support scanning in local ip but not recommended\n\n```javascript\n\n componentDidMount = () => {\n NetPrinter.init().then(() => {\n this.setState(Object.assign({}, this.state, {printers: [{host: '192.168.10.241', port: 9100}]}))\n })\n }\n\n _connectPrinter => (host, port) => {\n //connect printer\n NetPrinter.connectPrinter(host, port).then(\n (printer) => this.setState(Object.assign({}, this.state, {currentPrinter: printer})),\n error => console.warn(error))\n}\n\n printTextTest = () => {\n if (this.state.currentPrinter) {\n NetPrinter.printText(\"sample text\\n\");\n }\n }\n\n printBillTest = () => {\n if(this.state.currentPrinter) {\n NetPrinter.printBill(\"sample bill\");\n }\n }\n\n ...\n\n render() {\n return (\n \n {\n this.state.printers.map(printer => (\n this._connectPrinter(printer.host, printer.port)}>\n {`device_name: ${printer.device_name}, host: ${printer.host}, port: ${printer.port}`}\n \n ))\n }\n this.printTextTest()}>\n Print Text \n \n this.printBillTest()}>\n Print Bill Text \n \n \n )\n }\n\n ...\n\n```\n","readmeFilename":"README.md"}