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
});