Barcode Selection Session
Defined in library scandit_datacapture_barcode_selection
- BarcodeSelectionSession
class BarcodeSelectionSessionAdded in version 6.10.0
Holds the ongoing state of a running BarcodeSelection. An instance of this class is passed to BarcodeSelectionListener.didUpdateSelection() when new barcodes are selected or currently selected barcodes are unselected.
Important
The barcode selection session should only be accessed from within didUpdateSelection() to which it is provided as an argument. It is not safe to be accessed from anywhere else since it may be concurrently modified.
Specifically no reference to selectedBarcodes should be kept and traversed outside of didUpdateSelection(). Instead a copy of the list should be made to avoid concurrent modification. The individual barcodes can be referenced without copying as they are not further modified.
- newlySelectedBarcodes
List<Barcode> get newlySelectedBarcodes
Added in version 6.10.0
List of codes that were newly selected in the last processed frame.
- newlyUnselectedBarcodes
List<Barcode> get newlyUnselectedBarcodes
Added in version 6.10.0
List of codes that were unselected in the last processed frame.
- selectedBarcodes
List<Barcode> get selectedBarcodes
Added in version 6.10.0
List of currently selected codes.
- reset()
Future<
void> reset()Added in version 6.10.0
Resets the barcode selection session, effectively clearing the history of selected codes. This function should only be called inside the listeners’ callback. To call it from another thread, use BarcodeSelection.reset().
- getCount(barcode)
Future<int> getCount(Barcode barcode)
Added in version 6.10.0
Returns how many times the given Barcode was selected.
- frameSequenceId
int get frameSequenceId
Added in version 6.10.0
The identifier of the current frame sequence.
Important
As long as there is no interruptions of frames coming from the camera, the frameSequenceId will stay the same.