Cordova Plugin for Thermal Printer's

This plugin is a wrapper for the Android library for ESC/POS Thermal Printer.

Install

Cordova

$ cordova plugin add thermal-printer-cordova-plugin

Ionic

$ ionic cordova plugin add thermal-printer-cordova-plugin

Capacitor

$ npm install thermal-printer-cordova-plugin
$ npx cap sync

Don't forget to add BLUETOOTH and INTERNET (for TCP) permissions and for USB printers the android.hardware.usb.host feature to the AndroidManifest.xml.

<uses-feature android:name="android.hardware.usb.host" />
<uses-permission android:maxSdkVersion="30" android:name="android.permission.BLUETOOTH" />
<uses-permission android:maxSdkVersion="30" android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
<uses-permission android:name="android.permission.BLUETOOTH_SCAN" />

Run this for getting Bluetooth access permission if needed

ThermalPrinter.requestBTPermissions({type: 'bluetooth'}, function(result){ console.log(result) }, function(error){ console.log(error) });

Examples

Notice for TypeScript-Developers

You can easily import and use the ThermalPrinter plugin in your TypeScript-Projects.

import { ThermalPrinterPlugin } from 'thermal-printer-cordova-plugin/src';

declare let ThermalPrinter: ThermalPrinterPlugin;

And then use the following examples in your code.

Print via Bluetooth

Printing via Bluetooth is as easy as possible.

ThermalPrinter.printFormattedText({
    type: 'bluetooth',
    id: 'first', // You can also use the identifier directly i. e. 00:11:22:33:44:55 (address) or name
    text: '[C]<u><font size='big'>Hello World</font></u>' // new lines with "\n"
}, function() {
    console.log('Successfully printed!');
}, function(error) {
    console.error('Printing error', error);
});

Notice: If not working please ensure that you have the printer connected. (Settings -> Bluetooth -> Pairing) If you have other issues maybe you have not granted the android.permission.BLUETOOTH permission.

Print via TCP

Printing via TCP is as easy as possible.

ThermalPrinter.printFormattedText({
    type: 'tcp',
    address: '192.168.1.123',
    port: 9100,
    id: 'tcp-printer-001', // Use an unique identifier for each printer i. e. address:port or name
    text: '[C]<u><font size='big'>Hello World</font></u>' // new lines with "\n"
}, function() {
    console.log('Successfully printed!');
}, function(error) {
    console.error('Printing error', error);
});

Notice: If not working please ensure that your device can ping the printer. And the printer must be a POSPrinter! Also ensure that you're using the correct port. 9100 is default for the thermal printers.

Print via USB (incl. listPrinters and requestPermissions)

1. First we get our printer because we don't know the printer's ID.
2. Then we request permissions for printing. This is needed because Android will not allow us to access all devices.
3. And finally we can print with our device.

ThermalPrinter.listPrinters({type: 'usb'}, function(printers) {
    if (printers.length > 0) {
        var printer = printers[0];
        ThermalPrinter.requestPermissions(printer, function() {
            // Permission granted - We can print!
            ThermalPrinter.printFormattedText({
                type: 'usb',
                id: printer.id,
                text: '[C]<u><font size='big'>Hello World</font></u>' // new lines with "\n"
            }, function() {
                console.log('Successfully printed!');
            }, function(error) {
                console.error('Printing error', error);
            });
        }, function(error) {
            console.error('Permission denied - We can\'t print!');
        });
    } else {
        console.error('No printers found!');
    }
}, function(error) {
    console.error('Ups, we cant list the printers!', error);
});

listPrinters(data, successCallback, errorCallback)

List available printers

printFormattedText(data, successCallback, errorCallback)

Print a formatted text and feed paper

See: https://github.com/DantSu/ESCPOS-ThermalPrinter-Android#formatted-text--syntax-guide

printFormattedTextAndCut(data, successCallback, errorCallback)

Print a formatted text, feed paper and cut the paper

See: https://github.com/DantSu/ESCPOS-ThermalPrinter-Android#formatted-text--syntax-guide

getEncoding(data, successCallback, errorCallback)

Get the printer encoding when available

disconnectPrinter(data, successCallback, errorCallback)

Close the connection with the printer

requestPermissions(data, successCallback, errorCallback)

Request permissions for USB printers

requestBTPermissions(data, successCallback, errorCallback)

Request permissions for bluetooth

bitmapToHexadecimalString(data, successCallback, errorCallback)

Convert Drawable instance to a hexadecimal string of the image data