Deprecation warning

Please note that this is outdated documentation for an older release of the Scandit Barcode Scanner SDK.

We are deprecating the 5.x API on all platforms (except Linux). Release 5.19 in April 2021 will be our final. Applications running 5.x will continue to work, and we will continue to release critical bug fixes and security patches only, for one year. We encourage you to migrate to 6.x and take advantage of our latest / advanced features and improved performance.

You'll find the updated documentation at: Data Capture SDK Documentation for Xamarin.Android and Data Capture SDK Documentation for Xamarin.iOS

IOnScanListener Interface Reference

Public Member Functions

void DidScan (IScanSession session)

Detailed Description

Interface definition for a callback to be invoked when one or more barcodes were recognized.

Member Function Documentation

void DidScan ( IScanSession  session)

Called whenever a new barcode has been successfully recognized.

Newly recognized codes are available as IScanSession.NewlyRecognizedCodes. When DidScan callback is invoked, there is always at least one new code available.

The callback is invoked in the thread running the barcode recognition engine. This means, any change to the graphical user interface will have to be moved to the UI thread. Likewise, Since the callback blocks the engine, any expensive calculation should be posted to a Handler.

When no more codes should be scanned, call IScanSession.StopScanning, when the scan session should be paused, call IScanSession.PauseScanning(). Calling these two methods is preferred over calling BarcodePicker.StopScanning and BarcodePicker.PauseScanning, as it will immediately stop/pause the scanning.

Note, it is only safe to access the session object inside the DidScan callback, but you can safely store the lists of barcodes returned by IScanSession.AllRecognizedCodes and IScanSession.NewlyRecognizedCodes

sessioncurrent scan session
See also