PDA608 Scanner Printer Plugin #

A Flutter plugin for PDA608 devices to use the built-in thermal printer and barcode scanner.

Features #

• Thermal Printer: Print text with customizable formatting options
• Barcode Scanner: Scan barcodes using the device's built-in scanner
• Hardware Button Support: Trigger scanner using the device's hardware button

Installation #

Add this to your package's pubspec.yaml file:

dependencies:
  pda608_scanner_printer: ^0.0.1

Or install directly from the command line:

flutter pub add pda608_scanner_printer

Usage #

Initialize the plugin #

import 'package:pda608_scanner_printer/pda608_scanner_printer.dart';

// Initialize the printer and scanner
bool initialized = await Pda608ScannerPrinter.initializePrinter();

Print text #

// Print text with formatting options
await Pda608ScannerPrinter.printText(
  text: "Hello, PDA608!",
  fontSize: 1, // 0 = normal, 1 = large
  alignment: 1, // 0 = left, 1 = center, 2 = right
  paperWidth: 52, // Paper width in mm
  isLabel: false, // Whether using label paper
  tearPaper: true, // Whether to feed paper for tearing
);

Scan barcodes #

// Start barcode scanner
await Pda608ScannerPrinter.startScan();

// Listen for scan results
Pda608ScannerPrinter.onBarcodeScanned.listen((barcode) {
  print('Scanned barcode: $barcode');
  // Handle the barcode data
});

Using with hardware button #

The plugin automatically registers for hardware button events. Just set up a listener to receive scan results:

@override
void initState() {
  super.initState();
  
  // Listen for scan results from hardware button presses
  Pda608ScannerPrinter.onBarcodeScanned.listen((barcode) {
    setState(() {
      myBarcodeVariable = barcode;
    });
  });
}

FlutterFlow Integration #

To use this plugin in FlutterFlow:

1. Add the package to your FlutterFlow project dependencies
2. Create a custom widget for the scanner functionality
3. Use actions to handle scan results

See the documentation below for detailed FlutterFlow integration instructions.

Complete Example #

import 'package:flutter/material.dart';
import 'package:pda608_scanner_printer/pda608_scanner_printer.dart';

class PDA608Demo extends StatefulWidget {
  @override
  _PDA608DemoState createState() => _PDA608DemoState();
}

class _PDA608DemoState extends State<PDA608Demo> {
  String _status = 'Not initialized';
  bool _isInitialized = false;
  String _lastScannedBarcode = '';
  
  @override
  void initState() {
    super.initState();
    _initializePlugin();
    
    // Listen for scan events
    Pda608ScannerPrinter.onBarcodeScanned.listen((barcode) {
      setState(() {
        _lastScannedBarcode = barcode;
      });
    });
  }
  
  Future<void> _initializePlugin() async {
    bool initialized = await Pda608ScannerPrinter.initializePrinter();
    setState(() {
      _isInitialized = initialized;
      _status = initialized ? 'Initialized' : 'Failed to initialize';
    });
  }
  
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('PDA608 Demo')),
      body: Column(
        children: [
          Text('Status: $_status'),
          Text('Last scanned: $_lastScannedBarcode'),
          ElevatedButton(
            onPressed: _isInitialized ? () async {
              await Pda608ScannerPrinter.startScan();
            } : null,
            child: Text('Activate Scanner'),
          ),
          ElevatedButton(
            onPressed: _isInitialized ? () async {
              await Pda608ScannerPrinter.printText(
                text: 'Test Print\n$_lastScannedBarcode',
              );
            } : null,
            child: Text('Print Last Barcode'),
          ),
        ],
      ),
    );
  }
}

Android Setup #

For Android, the plugin needs the following permissions in your AndroidManifest.xml:

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

Device Support #

This plugin is specifically designed for the PDA608 device and may not work on other devices without modifications.

License #

This plugin is available under the MIT License.