Printerservice

• Simple implementation of standard android print API for custom documents.
• Search printers by Wi-Fi in current network, using NsdManager.DiscoveryListener (SERVICE_TYPE = "_pdl-datastream._tcp"). Timeout for search services 3.5 s.
• Dispatch data(File, InputStream, ByteArray) to printer for printing. Interaction with printer using PJL commands. Tested only .pdf files
• Work with mobile thermal printers CITIZEN (find printers, print text/Bitmap, customize fonts)
• Search and dispatch use RxJava2 and return Single/Completable

dependencies

In the root project build.gradle

allprojects {
   ...
    repositories {
        ...
        maven {
            url  "https://dl.bintray.com/alexeypanchenko/maven"
        }
    }
}

In the app module build.gradle

compile 'com.github.alexeypanchenko:printerservice:0.0.8'

usage

Stationary printers

Show preview document, using standard android print tools

import ru.alexeyp.printerservice.PrintService
    
fun showPreview() {
    val service = PrintService(context)
    service.showDocumentPreview(file, name)  // default name = "Document" 
}

Find printer, return Single<List<PrinterInfo>>

import ru.alexeyp.printerservice.PrintService
    
fun findPrinters() {
    val service = PrintService(context)
    service.findPrinters()
           ...
           .subscribe { printers -> }
}

Printer model

data class PrinterInfo(val name: String, val ip: String, val port: Int)

Dispatch data to printer return Single<String>

import ru.alexeyp.printerservice.PrintService
import ru.alexeyp.printerservice.connectors.PaperSize
    
fun print() {
    val service = PrintService(context)
    val file = File(".../path")
    val filename = "Document"       // default = "Document"
    val paperSize = PaperSize.A4    // default = PaperSize.A4
    val copies = 1                  // default = 1
    val timeout = 5000L                  // default = 4000L
    printService.print(printInfo.ip, printInfo.port, file, filename, paperSize, copies, timeout)
            ...
            .subscribe { successMessage -> }
}

CITIZEN printers

Find printer (Async), return Single<List<PrinterInfo>>

import ru.alexeyp.printerservice.citizen.CitizenPrintService
import ru.alexeyp.printerservice.citizen.PrinterType
    
fun findPrinters() {
    val service = CitizenPrintService(PrinterType.WI_FI)
    val wifiTimeout = 10    // 1-30, default 5
    service.findPrinters(context, wifiTimeout)
           ...
           .observeOn(AndroidSchedulers.mainThread())
           .subscribe { printers -> }
}

Print text (Async), return Completable

import ru.alexeyp.printerservice.citizen.CitizenPrintService
import ru.alexeyp.printerservice.citizen.PrinterType
import ru.alexeyp.printerservice.citizen.CitizenConfig
    
fun printText() {
    val address = "10.10.10.10"  // ip address or bluetooth address
    val printer = CitizenPrintService(PrinterType.WI_FI).Printer(address)
    val alignment          // default CitizenConfig.Alignment.CENTER
    val attributes         // default CitizenConfig.Font.DEFAULT
    val textSize           // default CitizenConfig.Width.WIDTH1 or CitizenConfig.Height.HEIGHT1
    printer.printText("text gor printing", alignment, attributes, textSize)
           ...
           .observeOn(AndroidSchedulers.mainThread())
           .subscribe { }
}

Print bitmap (Async), return Completable

import ru.alexeyp.printerservice.citizen.CitizenPrintService
import ru.alexeyp.printerservice.citizen.PrinterType
import ru.alexeyp.printerservice.citizen.CitizenConfig
    
fun printText() {
    val address = "10.10.10.10"  // ip address or bluetooth address
    val printer = CitizenPrintService(PrinterType.WI_FI).Printer(address)
    val alignment          // default CitizenConfig.Alignment.CENTER
    printer.printBitmap(bitmap, alignment)
           ...
           .observeOn(AndroidSchedulers.mainThread())
           .subscribe { }
}