Data Capture Context Listener

Defined in package com.scandit.datacapture.core.capture

DataCaptureContextListener

interface DataCaptureContextListener

Added in version 6.0.0

Interface for observing/listening to mode and status changes of a data capture context.

To observe changes of the data capture context, one or more DataCaptureContextListener may be added. These listeners provide hooks into different parts of the data capture context.

onFrameSourceChanged(dataCaptureContext, frameSource)

void onFrameSourceChanged(@NonNull DataCaptureContext dataCaptureContext,
        @Nullable FrameSource frameSource)

Added in version 6.0.0

Invoked when the data capture context changed the frame source. Also invoked if the frame source is reset to null.

onModeAdded(dataCaptureContext, dataCaptureMode)

void onModeAdded(@NonNull DataCaptureContext dataCaptureContext,
        DataCaptureMode dataCaptureMode)

Added in version 6.0.0

Called when a mode got added to the context.

onModeRemoved(dataCaptureContext, dataCaptureMode)

void onModeRemoved(@NonNull DataCaptureContext dataCaptureContext,
        DataCaptureMode dataCaptureMode)

Added in version 6.0.0

Called when a mode got removed from the context.

onObservationStarted(dataCaptureContext)

void onObservationStarted(@NonNull DataCaptureContext dataCaptureContext)

Added in version 6.0.0

Called when the listener has been added to the data capture context and is from now on receiving events.

onObservationStopped(dataCaptureContext)

void onObservationStopped(@NonNull DataCaptureContext dataCaptureContext)

Added in version 6.0.0

Called when the listener has been removed from the data capture context and is no longer receiving events.

onStatusChanged(dataCaptureContext, contextStatus)

void onStatusChanged(@NonNull DataCaptureContext dataCaptureContext,
        ContextStatus contextStatus)

Added in version 6.0.0

Called when a context status changed.