cordova-plugin-usbprint

This Plugin allows you to print documents via USB printer.

Supported Platform

• Android

Usage

Installation

cordova plugin add cordova-plugin-usbprint --save

Once application was started "UsbPrint" will be available in "window.cordova.plugins". So you can access plugin as

window['cordova'].plugins.UsbPrinter....()

Methods

• getConnectedPrinters(successCallback, failureCallback) :=> Gets all connected USB printer.
• connect(printername, successCallback, failureCallback) :=> Connect or gets permission for the mentioned printer identified via "printername". "printername" can be identified from the printers list got from above method call.
• disconnect(printername, successCallback, failureCallback) :=> Disconnect or gets permission for the mentioned printer identified via "printername". "printername" can be identified from the printers list got from above method call.
• print(printername, msg, successCallback, failureCallback) :=> Get all connected USB printer.
• isPaperAvailable(printername, successCallback, failureCallback) :=> Tells whether paper is available in mentioned printer.
• sendCommand(printername, command, successCallback, failureCallback) :=> Sends POS command to the printer device.
• cutPaper(printername, successCallback, failureCallback) :=> Trigger Full cut paper event to printer.

Step 1:

First scan for all connected printers via USB

            window['cordova'].plugins.UsbPrinter.getConnectedPrinters((result) => {
                console.log(result);
                // result will be list of printers connected to the usb device
                // success callback execution
            }, err => {
                console.error(err)
                // failure callback execution
            });

Step 2:

Connect or get permission for the printer from app. Connect to the printer using printer_name.

            window['cordova'].plugins.UsbPrinter.connect(printer.printername, (result) => {
                console.log(result)
                // success callback execution
            }, err => {
                // use this method to recognise the disconnection of usb device
                console.error(err)
                // failure callback execution
            });

Note: When USB gets disconnected from the mobile device, then failure callback is invoked. So use this to reecognise the unsuccesful connection and disconnection from mobile device.

Step 3:

Send string to print.

            window['cordova'].plugins.UsbPrinter.print(printer.printername, message, (result) => {
                console.log("result of usb print action", result)
                // successful callback execution
            }, err => {
                console.error('Error in usb print action', err)
                // failure callback execution
            });