Bluetooth support

[andrey-ushakov]

Bluetooth support

[andrey-ushakov]

Hi @JunioJsv ,
The package now supports Bluetooth printers in beta mode.

[andrey-ushakov]

Hi,

I would like to do that but unfortunately I don't have any ESC/POS bluetooth printer to test. So it's nearly impossible to implement it for the moment...

[JunioJsv]

I can try to implement but I don't have the necessary knowledge yet, could you give me any tips? where to start

[andrey-ushakov]

I think you could try to use this lib: https://pub.dev/packages/flutter_bluetooth_serial

Create an empty flutter project, include the esc_pos_printer and flutter_bluetooth_serial libraries, try to connect to your printer by bluetooth and send a simple command, for example to cut the paper.
Hope it helps!

[andrey-ushakov]

I'm going to close this issue, feel free to reopen it if need

[JunioJsv]

@andrey-ushakov Thank you

[JunioJsv]

I tried searching for devices and this error occurred, on Lineage OS Android Pie. I will test on another device.

[JunioJsv]

2020-01-15 23:34:24.381 28100-28117/juniojsv.bem_servir_comanda I/flutter: Error starting scan.
2020-01-15 23:34:24.441 28100-28117/juniojsv.bem_servir_comanda E/flutter: [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: MissingPluginException(No implementation found for method startScan on channel flutter_bluetooth_basic/methods)
#0 BluetoothManager.scan (package:flutter_bluetooth_basic/src/bluetooth_manager.dart:85:7)

#1 BluetoothManager.startScan (package:flutter_bluetooth_basic/src/bluetooth_manager.dart:116:11)
#2 PrinterBluetoothManager.startScan (package:esc_pos_printer/src/printer_bluetooth_manager.dart:47:23)
#3 AppModel.searchPrinters. (package:bem_servir_comanda/models/app_model.dart:17:25)
#4 Builder.build (package:flutter/src/widgets/basic.dart:6834:41)
#5 StatelessElement.build (package:flutter/src/widgets/framework.dart:4392:28)
#6 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4324:15)
#7 Element.rebuild (package:flutter/src/widgets/framework.dart:4048:5)
#8 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4307:5)
#9 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4302:5)
#10 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3297:14)
#11 Element.updateChild (package:flutter/src/widgets/framework.dart:3091:12)
#12 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4344:16)
#13 Element.rebuild (package:flutter/src/widgets/framework.dart:4048:5)
#14 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4307:5)
#15 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4302:5)
#16 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3297:14)
#17 Element.updateChild (package:flutter/src/widgets/framework.dart:3091:12)
#18 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4344:16)
#19 Element.rebuild (package:flutter/src/widgets/framework.dart:4048:5)
#20 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4307:5)
#21 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4302:5)
#22 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3297:14)
#23 Element.updateChild (package:flutter/src/widgets/framework.dart:3091:12)
#24 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5570:14)
#25 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3297:14)
#26 Element.updateChild (package:flutter/src/widgets/framework.dart:3091:12)
#27 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4344:16)
#28 Element.rebuild (package:flutter/src/widgets/framework.dart:4048:5)
#29 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4307:5)
#30 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4302:5)
#31 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3297:14)
#32 Element.updateChild (package:flutter/src/widgets/framework.dart:3091:12)
#33 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5570:14)
#34 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3297:14)
#35 Element.updateChild (package:flutter/src/widgets/framework.dart:3091:12)
#36 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4344:16)
#37 Element.rebuild (package:flutter/src/widgets/framework.dart:4048:5)
#38 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4307:5)
#39 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4302:5)
#40 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3297:14)
#41 Element.updateChild (package:flutter/src/widgets/framework.dart:3091:12)
#42 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5570:14)
#43 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3297:14)
#44 Element.updateChild (package:flutter/src/wid

[JunioJsv]

I try run this code and have this erro

[JunioJsv]

Realize now that the bluetooth function only works on iOS for now, right? You had to make that clear in README.md, I found this information in pub.dev Changelog

[andrey-ushakov]

Hi @JunioJsv ,
Thank you for your feedback. It's already clearly stated in README.md :)
BTW, I hope Android support will be added soon as well.

[andrey-ushakov]

Hi,
I've just added Android support :)
Feel free to re-open this issue if need.

[andrey-ushakov]

Hi @JunioJsv ,

Does the library work well for you?
I've created a list of printers tested with this library.

May I ask you to add your printer model into the table?
It will help me to maintain the library and others to choose the right printer!
Thank you!