Barcode Tracking Session
Defined in framework ScanditBarcodeCapture
- SDCBarcodeTrackingSession
@interface SDCBarcodeTrackingSession : NSObject
Added in version 6.0.0
The tracking session contains all the currently tracked barcodes and changes that were made specifically in the last processed frame.
Important
The tracking session should only be accessed from within barcodeTracking:didUpdate:frameData: 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 trackedBarcodes, addedTrackedBarcodes, removedTrackedBarcodes or updatedTrackedBarcodes should be kept and traversed outside of barcodeTracking:didUpdate:frameData:. Instead a copy of the lists should be made to avoid concurrent modification. The individual tracked barcodes can be referenced without copying as they are not further modified.
- addedTrackedBarcodes
@property (nonatomic, nonnull, readonly) NSArray<SDCTrackedBarcode *> *addedTrackedBarcodes
Added in version 6.0.0
Newly tracked barcodes.
- removedTrackedBarcodes
@property (nonatomic, nonnull, readonly) NSArray<NSNumber *> *removedTrackedBarcodes
Added in version 6.0.0
The identifiers of lost tracked barcodes that were removed.
- updatedTrackedBarcodes
@property (nonatomic, nonnull, readonly) NSArray<SDCTrackedBarcode *> *updatedTrackedBarcodes
Added in version 6.0.0
Updated tracked barcodes (new location).
- trackedBarcodes
@property (nonatomic, strong, readonly) NSDictionary<NSNumber *, SDCTrackedBarcode *> *trackedBarcodes
Added in version 6.0.0
A map from identifiers to tracked barcodes. It contains all currently tracked barcodes.
- frameSequenceId
@property (nonatomic, readonly) NSInteger frameSequenceId
Added in version 6.1.0
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.
- JSONString
@property (nonatomic, nonnull, readonly) NSString *JSONString
Added in version 6.2.0
Returns the JSON representation of the barcode tracking session.
- - reset
- (
void)resetAdded in version 6.11.0
Resets the barcode tracking session, effectively clearing the history of tracked barcodes. This function should only be called inside the listeners’ callback.