Se agrego el sdk para el pda de honeywell

2026-06-19 08:57:58 -06:00
parent 50fe9a9d36
commit d6db216d2d
21 changed files with 1038 additions and 77 deletions
@@ -0,0 +1,62 @@
+import 'dart:async';
+import 'dart:io';
+
+import 'package:flutter/foundation.dart';
+import 'package:qrscanner/services/scan_launch_service.dart';
+
+typedef HardwareScanCallback = void Function(String rawValue);
+
+/// Integración con el escáner físico Honeywell vía Intent API nativa (EDA51).
+class HardwareScannerService {
+  HardwareScannerService._();
+
+  static final HardwareScannerService instance = HardwareScannerService._();
+
+  final _scanLaunch = ScanLaunchService.instance;
+
+  HardwareScanCallback? _onScan;
+  void Function(Exception error)? _onError;
+  StreamSubscription<String>? _scanSubscription;
+  bool _active = false;
+
+  bool get isActive => _active;
+
+  static Future<bool> isAvailable() => instance._scanLaunch.isSupported();
+
+  Future<bool> activate({
+    required HardwareScanCallback onScan,
+    void Function(Exception error)? onError,
+  }) async {
+    if (kIsWeb || !Platform.isAndroid) return false;
+
+    _onScan = onScan;
+    _onError = onError;
+
+    await _scanLaunch.claimScanner();
+    await _scanSubscription?.cancel();
+    _scanSubscription = _scanLaunch.scanStream.listen(
+      (code) => _onScan?.call(code),
+      onError: (Object error) => _onError?.call(Exception(error.toString())),
+    );
+
+    _active = true;
+    return _scanLaunch.isSupported();
+  }
+
+  Future<void> pause() async {
+    _active = false;
+  }
+
+  Future<void> deactivate() async {
+    await _scanSubscription?.cancel();
+    _scanSubscription = null;
+    _onScan = null;
+    _onError = null;
+    _active = false;
+  }
+
+  Future<void> ensureStopped() async {
+    await deactivate();
+    await _scanLaunch.releaseScanner();
+  }
+}