bluetooth_print 0.1.0

A new flutter plugin project connect to bluetooth thermal printer (Gprinter).

Introduction

BluetoothPrint is a bluetooth plugin for Flutter, a new mobile SDK to help developers build bluetooth thermal printer apps for both iOS and Android.(for example, Gprinter pt-380 eg.)

Features

ios features maybe finished before this month end(eg. 2019/12/30)

	Android	iOS	Description
select devices	✅		scan for Bluetooth Low Energy devices and select.
connect	✅		Establishes a connection to the device.
disconnect	✅		Cancels an active or pending connection to the device.
print test message	✅		print device test message.
print text	✅		print custom text, support layout.
print image	✅		print image.
print qrcode	✅		print qrcode,support change size.
display connect status	✅		Stream of state changes for the Bluetooth Device.

Usage

Example

To use this plugin :

• add the dependency to your pubspec.yaml file.

  dependencies:
    flutter:
      sdk: flutter
    bluetooth_print:

• init a BluetoothPrint instance

import 'package:bluetooth_print/bluetooth_print.dart';
import 'package:bluetooth_print/bluetooth_print_model.dart';


BluetoothPrint bluetoothPrint = BluetoothPrint.instance;

getDevices

List<BluetoothDevice> list = await bluetoothPrint.getBondedDevices();

connect

await bluetoothPrint.connect(_device);

disconnect

await bluetoothPrint.disconnect();

listen state

      bluetoothPrint.state.listen((state) {
      print('cur device status: $state');

      switch (state) {
        case BluetoothPrint.CONNECTED:
          setState(() {
            _connected = true;
          });
          break;
        case BluetoothPrint.DISCONNECTED:
          setState(() {
            _connected = false;
          });
          break;
        default:
          break;
      }
    });