start discovering is not working

[abdenassar01]

Description

When running start function from usePrintersDiscovery It keeps discovering then stop without finding any. that happens even when using the example project and running it locally. (USING ANDROID PHYSICAL DEVICE android 13)

Steps to reproduce

CALL START FUNCTION FROM usePrintersDiscovery

react-native-esc-pos-printer version

^4.4.1

React Native version

0.76.6

Platforms

Android

Workflow

None

Architecture

None

Build type

None

Device

None

Device model

No response

Acknowledgements

Yes

[kengjungwa]

I got the same problem running on a real android device (Android 14) and react-native-esc-pos-printer 4.4.3. When searching for printers for 10 seconds, it found nothing (PrintersDiscovery.onStatusChange.status=inactive).

However, the printer (Xprinter XP-58IIL) can be found and able to print from Loyverse Android app or using this library https://github.com/DantSu/ESCPOS-ThermalPrinter-Android

Not sure if it's because the printer is not EPSON. From my understanding, based on the code in EscPosPrinterDiscoveryModule, the discovery process is done from com.epson.epos2.discovery.Discovery.

[amazing4u]

I got the same problem running on a real android device (Android 14) and react-native-esc-pos-printer 4.4.3. When searching for printers for 10 seconds, it found nothing (PrintersDiscovery.onStatusChange.status=inactive).

However, the printer (Xprinter XP-58IIL) can be found and able to print from Loyverse Android app or using this library https://github.com/DantSu/ESCPOS-ThermalPrinter-Android

Not sure if it's because the printer is not EPSON. From my understanding, based on the code in EscPosPrinterDiscoveryModule, the discovery process is done from com.epson.epos2.discovery.Discovery.

I think this library does not support this printer (Xprinter XP-58IIL).

See: https://github.com/tr3v3r/react-native-esc-pos-printer/blob/main/docs/SUPPORTED_DEVICES.md

[amazing4u]

Description

When running start function from usePrintersDiscovery It keeps discovering then stop without finding any. that happens even when using the example project and running it locally. (USING ANDROID PHYSICAL DEVICE android 13)

Steps to reproduce

CALL START FUNCTION FROM usePrintersDiscovery

Did you add the permissions to app.json?

{
  "name": "PrinterApp",
  "displayName": "PrinterApp",
  "version": "1.0.0",
  "android": {
    "permissions": [
      "android.permission.INTERNET",
      "android.permission.BLUETOOTH_SCAN",
      "android.permission.BLUETOOTH_CONNECT",
      "android.permission.BLUETOOTH",
      "android.permission.BLUETOOTH_ADMIN",
      "android.permission.ACCESS_FINE_LOCATION",
      "android.permission.ACCESS_COARSE_LOCATION",
      "android.permission.WRITE_EXTERNAL_STORAGE",
      "android.permission.READ_EXTERNAL_STORAGE"
    ]
  }
}

You can try my working printer app - tester solution (tested with android 15):

Here: PrinterApp.zip

[kengjungwa]

@amazing4u Thank you so much for the info and test app! It's because it's not in the list of supported model.