isConnected method
Checks if printer is currently connected
address Optional printer address to check. If null, checks general connection status
Returns true if connected, false otherwise
Implementation
Future<bool> isConnected({String? address}) async {
try {
print('[PrinterManager] isConnected called for address: $address');
final result = await _channel.invokeMethod('isConnected', {'address': address});
print('[PrinterManager] isConnected result: $result');
return result as bool? ?? false;
} on PlatformException catch (e) {
print('[PrinterManager] isConnected error: ${e.code} - ${e.message}');
throw Exception("IsConnected Error (${e.code}): ${e.message}");
}
}