Barcode Selection Listener
Defined in package com.scandit.datacapture.barcode.selection
- BarcodeSelectionListener
interface BarcodeSelectionListener
Added in version 6.9.0
The BarcodeSelection listener is the main way for hooking into BarcodeSelection. It provides a callback that is invoked when the state of selected barcodes changes.
- onObservationStarted(barcodeSelection)
void
onObservationStarted(@NonNull BarcodeSelection barcodeSelection)Added in version 6.9.0
Called when the listener starts observing the BarcodeSelection instance.
- onObservationStopped(barcodeSelection)
void
onObservationStopped(@NonNull BarcodeSelection barcodeSelection)Added in version 6.9.0
Called when the listener stops observing the BarcodeSelection instance.
- onSelectionUpdated(barcodeSelection, session, frameData)
void
onSelectionUpdated(@NonNull BarcodeSelection barcodeSelection, @NonNull BarcodeSelectionSession session, @Nullable FrameData frameData)Added in version 6.9.0
Invoked whenever a barcode is selected or a previously selected barcode is unselected.
FrameData is null if the camera is frozen and the selection is changed.
- onSessionUpdated(barcodeSelection, session, frameData)
void
onSessionUpdated(@NonNull BarcodeSelection barcodeSelection, @NonNull BarcodeSelectionSession session, @Nullable FrameData frameData)Added in version 6.9.0
Invoked after a frame has been processed by barcode selection and the session has been updated. In contrast to onSelectionUpdated(), this method is invoked, regardless whether a code was selected or not.
FrameData is null if the camera is frozen and the selection is changed.