Homeflow Printer Android Kotlin

Homeflow Printer, it is a library that uses https://github.com/DantSu/ESCPOS-ThermalPrinter-Android/tree/3.2.1 in a custom print format.

• Bluetooth
• USB
• TCP

Installation

Step 1. Add the JitPack repository to your build file. Add it in your root /build.gradle at the end of repositories:

allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}

If gradle is 7.2:. Add the dependency in /settings.gradle:

dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}

Step 2. Add the dependency in /app/build.gradle :

dependencies {
    ...
    implementation 'com.github.ldavidsp:homeflow-print:v2.0.4'
}

Bluetooth

Bluetooth permission

Make sure to add the following permissions to your AndroidMenifest.xml.

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />

Also, you have to check the bluetooth permission in your app like this :

private fun printerPermission() {
    if ((checkSelfPermission(Manifest.permission.BLUETOOTH) == PackageManager.PERMISSION_DENIED) ||
      (checkSelfPermission(Manifest.permission.BLUETOOTH_ADMIN) == PackageManager.PERMISSION_DENIED) ||
      (checkSelfPermission(Manifest.permission.BLUETOOTH_CONNECT) == PackageManager.PERMISSION_DENIED) ||
      (checkSelfPermission(Manifest.permission.BLUETOOTH_SCAN) == PackageManager.PERMISSION_DENIED)
    ) {
      val permissions = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
        arrayOf(
          Manifest.permission.BLUETOOTH,
          Manifest.permission.BLUETOOTH_SCAN,
          Manifest.permission.BLUETOOTH_ADMIN,
          Manifest.permission.BLUETOOTH_CONNECT,
          )
      } else {
        arrayOf(
          Manifest.permission.BLUETOOTH,
          Manifest.permission.BLUETOOTH_ADMIN,
        )
      }
      requestPermissions(permissions, 1)
    }
  }

Usage Homeflow Printer

val printable = ArrayList<Printable>()
printable.add(TextPrintable.Builder().setNewLine())
printable.add(TextPrintable.Builder().setCenter("EL TEST").setNewLine())
printable.add(TextPrintable.Builder().setCenter("18383838383").setNewLine())
printable.add(TextPrintable.Builder().setCenter("San Marcos").setNewLine())
printable.add(TextPrintable.Builder().setCenter("jpehgsre@gmail.com").setNewLine())
printable.add(TextPrintable.Builder().setNewLine())

printable.add(TextPrintable.Builder().setLeft("Condición: Contado").setNewLine())
printable.add(TextPrintable.Builder().setLeft("Clave: Contado").setNewLine())
printable.add(TextPrintable.Builder().setLeft("Tiquete: 000010400").setNewLine())
printable.add(TextPrintable.Builder().setLeft("Cliente: Contado").setNewLine())
printable.add(TextPrintable.Builder().setLeft("13/04/2022 15:20:38").setNewLine())
printable.add(TextPrintable.Builder().setLine("----------------------------------------").setNewLine())
printable.add(TextPrintable.Builder().setLeft("Cant.").setCenter("Producto").setRight("Total").setNewLine())
printable.add(TextPrintable.Builder().setLine("----------------------------------------").setNewLine())

printable.add(TextPrintable.Builder().setLeft("1").setCenter("Laptop").setRight("C$ 1,200.00").setNewLine())

printable.add(TextPrintable.Builder().setLine("----------------------------------------").setNewLine())
printable.add(TextPrintable.Builder().setLeft("Subtotal Gravado").setRight("C$ 1,061.95").setNewLine())
printable.add(TextPrintable.Builder().setLeft("Subtotal No Gravado").setRight("C$ 0.00").setNewLine())
printable.add(TextPrintable.Builder().setLeft("Total Gravado").setRight("C$ 1,061.95").setNewLine())
printable.add(TextPrintable.Builder().setLeft("Total No Gravado").setRight("C$ 0.00").setNewLine())
printable.add(TextPrintable.Builder().setLeft("IVA (%13)").setRight("C$ 138.00").setNewLine())
printable.add(TextPrintable.Builder().setLeft("Total").setRight("C$ 1200.00").setNewLine())
printable.add(TextPrintable.Builder().setLine("----------------------------------------").setNewLine())
printable.add(TextPrintable.Builder().setLeft("Pago Efectivo").setRight("C$ 1200.00").setNewLine())

HomeflowPrinter(mActivity, printable).printBluetooth()

or

HomeflowPrinter(mActivity, printable).printUsb()