getBarcodeStreamReceiver static method

Stream? getBarcodeStreamReceiver(String lineColor, String cancelButtonText, bool isShowFlashIcon, ScanMode scanMode, int? delayMillis, String cameraFace, ScanFormat scanFormat,)

Returns a continuous stream of barcode scans until the user cancels the operation.

Shows a scan line with lineColor over a scan window. A flash icon is displayed if isShowFlashIcon is true. The text of the cancel button can be customized with the cancelButtonText string. Returns a stream of detected barcode strings.

Implementation

static Stream? getBarcodeStreamReceiver(
  String lineColor,
  String cancelButtonText,
  bool isShowFlashIcon,
  ScanMode scanMode,
  int? delayMillis,
  String cameraFace,
  ScanFormat scanFormat,
) {
  if (cancelButtonText.isEmpty) {
    cancelButtonText = 'Cancel';
  }

  // Pass params to the plugin
  Map params = <String, dynamic>{
    'lineColor': lineColor,
    'cancelButtonText': cancelButtonText,
    'isShowFlashIcon': isShowFlashIcon,
    'isContinuousScan': true,
    'scanMode': scanMode.index,
    'delayMillis': delayMillis ?? 0,
    'cameraFacingText': cameraFace,
    'scanFormat': scanFormat.name,
  };

  // Invoke method to open camera, and then create an event channel which will
  // return a stream
  _channel.invokeMethod('scanBarcode', params);
  _onBarcodeReceiver ??= _eventChannel.receiveBroadcastStream();
  return _onBarcodeReceiver;
}