Barcode scanning on E315 with AdyenPOS lib

BarcodeScannerVC.m

- (void)viewDidLoad {
  [super viewDidLoad];
  
  [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(barcodeReceived:)
                                                 name:ADYNotificationBarcodeReceived
                                               object:nil];
                                               
  // Optional - button to trigger soft scan
  UIButton *barcodeBtn = [[UIButton alloc] init];
  [barcodeBtn setTitle:@"Barcode" forState:UIControlStateNormal];
  [barcodeBtn addTarget:self action:@selector(startBarcodeScan:) forControlEvents:UIControlEventTouchDown];
  [barcodeBtn addTarget:self action:@selector(stopBarcodeScan:) forControlEvents:UIControlEventTouchUpInside];
  [barcodeBtn sizeToFit];
}

- (void)barcodeReceived:(NSNotification *)notification {
    
  if (!notification.object) return;
  
  NSString *barcode = notification.object;
        
  NSString *symbology = notification.userInfo[@"symbology"] ? notification.userInfo[@"symbology"] : @"";
  ADYBarcodeType barcodeType = [notification.userInfo[@"type"] integerValue];
        
  NSLog(@"Barcode %@ (%i)", symbology, (int)barcodeType);
}

// Optional - Soft scan

- (IBAction)startBarcodeScan:(id)sender {
    ADYDeviceRegistry *deviceRegistry = [Adyen sharedInstance].deviceRegistry;
    if (deviceRegistry.devices.count == 0) return;
    ADYDevice *device = deviceRegistry.devices[0];
    [device startBarcodeScan];
}

- (IBAction)stopBarcodeScan:(id)sender {
    ADYDeviceRegistry *deviceRegistry = [Adyen sharedInstance].deviceRegistry;
    if (deviceRegistry.devices.count == 0) return;
    ADYDevice *device = deviceRegistry.devices[0];
    [device stopBarcodeScan];
}