varunwyest/react-native-zebra-bluetooth-printer

bluetooth printing for zebra printer

react-native-zebra-bluetooth-printer

Getting started

$ npm install react-native-zebra-bluetooth-printer --save

Mostly automatic installation

$ react-native link react-native-zebra-bluetooth-printer

Note : For react-native > 0.59, don't use above command it uses auto-linking.

Manual installation

iOS

1. In XCode, in the project navigator, right click Libraries ➜ Add Files to [your project's name]
2. Go to node_modules ➜ react-native-zebra-bluetooth-printer and add RNZebraBluetoothPrinter.xcodeproj
3. In XCode, in the project navigator, select your project. Add libRNZebraBluetoothPrinter.a to your project's Build Phases ➜ Link Binary With Libraries
4. Run your project (Cmd+R)<

Android

1. Open up android/app/src/main/java/[...]/MainActivity.java

• Add import com.reactlibrary.RNZebraBluetoothPrinterPackage; to the imports at the top of the file
• Add new RNZebraBluetoothPrinterPackage() to the list returned by the getPackages() method

2. Append the following lines to android/settings.gradle:

   include ':react-native-zebra-bluetooth-printer'
   project(':react-native-zebra-bluetooth-printer').projectDir = new File(rootProject.projectDir, 	'../node_modules/react-native-zebra-bluetooth-printer/android')
   

3. Insert the following lines inside the dependencies block in android/app/build.gradle:

     compile project(':react-native-zebra-bluetooth-printer')
   

Update Android Manifest

 <uses-permission android:name="android.permission.BLUETOOTH"/>
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

Usage

RNZebraBluetoothPrinter

RNZebraBluetoothPrinter is a module for Bluetooth management and supports print functionality for zebra bluetooth printers ( only ble devices ). It includes features like bluetooth enable/disable, pair/unpair a BLE/Bluetooth device, scan for nearby bluetooth devices and printing using bluetooth.

import RNZebraBluetoothPrinter from 'react-native-zebra-bluetooth-printer';

1. isEnabledBluetooth == > async function, check the status of bluetooth service in the bluetooth client(mobile phone) .Returns true if already enabled, false if not enabled.

RNZebraBluetoothPrinter.isEnabledBluetooth().then((res) => {
	//do something with res
})

2. enableBluetooth == > async function, Android: requests for bluetooth on/off permission on the android device. iOS: resolves to nil.

RNZebraBluetoothPrinter.enableBluetooth().then((res) => {
	//do something with res
})

3. disableBluetooth == > async function, Android: disables bluetooth if bluetooth is switched on. iOS: simply resolves by nil.

RNZebraBluetoothPrinter.disableBluetooth().then((res) => {
	//do something with res
})

4. scanDevices == > async function, scans for available nearby bluetooth devices for a specific period of time.

RNZebraBluetoothPrinter.scanDevices().then((deviceArray) => {
	//do something with res
})

5. pairedDevices == > async function, Android: returns already paired devices. iOS: resolves to nil.

RNZebraBluetoothPrinter.pairedDevices().then((deviceArray) => {
	//do something with deviceArray
})

6. connectDevice == > async function, for both android and iOS

RNZebraBluetoothPrinter.connectDevice(deviceAddress).then((res) => {
	//do something with res
	//for android, device address is mac address
	//for iOS, device address is a long string like 0C347F9F-2881-9CCB-43B0-205976944626
})

7. unpairDevice == > async function, Android: unpair/disconnect a paired device from paired device list.

RNZebraBluetoothPrinter.unpairDevice(deviceAddress).then((res) => {
	//do something with res
})

iOS: function resolves to nil.		

8. print == > async function, prints specific zpl string from a zebra printer for both android and iOS. CPCL strings can also be printed using this for Android.

For example :

const zpl = "^XA^FX Top section with company logo, name and address.^CF0,60^FO50,50^GB100,100,100^FS^ FO75,75 ^ FR ^ GB100, 100, 100 ^ FS^ FO88, 88 ^ GB50, 50, 50 ^ FS ^XZ";

Android

RNZebraBluetoothPrinter.print(deviceAddress,zpl).then((res) => {
	//do something with res
})

iOS

RNZebraBluetoothPrinter.print(zpl).then((res)=>{
	//do something with res
})