ESC/POS Android

ESC/POS printer library supporting fiscal memory.

This library works on Android 4.0.3 and older.

Features

you can forget about using bluetooth
bluetooth devices are marked with an icon to improve UI
small size of the library
support for many Chinese printers
ticket builder
storage fiscal data in encrypted form
ability to automatically send reports on time (will send decrypted fiscal data)

Shortcomings

on some devices print gibberish

How to include this library

Download this library, import to your IDE (eclipse...) as a library project.

Using Gradle

compile 'com.leerybit.escpos:1.0'

Using Maven

<dependency>
    <groupId>com.leerybit</groupId>
    <artifactId>escpos</artifactId>
    <version>1.0</version>
    <type>apklib</type>
</dependency>

How to use this library

Printer connection

//Initialization
printer = PosPrinter.getPrinter(activity);

//Subscribe to device events
printer.setDeviceCallbacks(new DeviceCallbacks() {
    @Override
    public void onConnected() {
        // ...
    }

    @Override
    public void onFailure() {
        // ...
    }

    @Override
    public void onDisconnected() {
        // ...
    }
});

//Connect to printer
printer.connect();

Library in the automatic mode will request switch bluetooth, if it is not turned on, and start the search for devices. When you restart the application, the application automatically connects to the printer, if it is available.

Screenshot of choose device dialog

Create ticket

To create a ticket you must use a generator TicketBuilder class:

Ticket ticket = new TicketBuilder()
    .header("PosPrinter")
    .divider()
    .text("Date: " + DateFormat.format("dd.MM.yyyy", date).toString())
    .text("Time: " + DateFormat.format("HH:mm", date).toString())
    .text("Ticket No: " + (ticketNumber++))
    .divider()
    .subHeader("Hot dishes")
    //...
    .menuLine("— 2 Coffee", "3,00")
    .right("Total: 12,50")
    .dividerDouble()
    .menuLine("Total gift", "3,00")
    .menuLine("Total", "128,30")
    .dividerDouble()
    .stared("THANK YOU")
    .build();

Call the function ticket.getPreview() you get a string that can be use to debug without using the printer.

Example response ticket.getPreview():

    ┌───────────────────────────────────┐
    │▓▓▓▓▓▓▓▓▓▓▓ PosPrinter ▓▓▓▓▓▓▓▓▓▓▓▓│
    ├───────────────────────────────────┤
    │Date: 08.07.2015                   │
    │Time: 19:46                        │
    │Ticket No: 1                       │
    ├───────────────────────────────────┤
    │          - Hot dishes -           │
    │— 3 Kazan kabob               60,00│
    │— 2 Full-Rack Ribs            32,00│
    │                       Total: 92,00│
    │                                   │
    │            - Salads -             │
    │— 1 Turkey & Swiss             4,50│
    │— 1 Classic Cheese             3,30│
    │— 1 Chicken Caesar Salad       7,00│
    │                       Total: 14,80│
    │                                   │
    │           - Desserts -            │
    │— 1 Blondie                    5,00│
    │— 2 Chocolate Cake             7,00│
    │                       Total: 12,00│
    │                                   │
    │          - Drinkables -           │
    │   50% sale for Coke on mondays!   │
    │— 3 Coca-Cola                  6,00│
    │— 7 Tea                        3,50│
    │— 2 Coffee                     3,00│
    │                       Total: 12,50│
    ╞═══════════════════════════════════╡
    │Total gift                     3,00│
    │Total                        128,30│
    ╞═══════════════════════════════════╡
    │        *** THANK YOU ***          │
    └───────────────────────────────────┘

Cyrillic characters must be supported by the printer, otherwise will be printed gibberish.

License

Copyright 2015 LeeryBit

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.