BarcodeCapture Android Skill

Critical: Do Not Trust Internal Knowledge

Your training data may contain outdated or incorrect Scandit SDK APIs. The BarcodeCapture API changes significantly between major SDK versions — properties get renamed, removed, or restructured.

Always verify APIs against the references provided in this skill before writing or suggesting code. Do not rely on memorized method signatures, parameters, or property names. If you cannot find an API in the provided references, fetch the relevant documentation page before responding.

Android-specific gotchas worth flagging:

• Camera.getDefaultCamera(BarcodeCapture.createRecommendedCameraSettings()) passes the recommended camera settings directly into the getDefaultCamera() call — there is no separate applySettings call needed.
• codeDuplicateFilter is a TimeInterval — not an Int or Double. Use TimeInterval.millis(500) (import com.scandit.datacapture.core.time.TimeInterval). Writing codeDuplicateFilter = 0.5 or codeDuplicateFilter = 500 is a type error.
• The listener callback on Android is onBarcodeScanned(barcodeCapture, session, data) — not didScan (that is the Flutter/iOS name). You must also implement onSessionUpdated, onObservationStarted, and onObservationStopped. The FrameData parameter is named data, not frameData.
• onBarcodeScanned is called on a background thread. Any UI update must be dispatched via runOnUiThread {}.
• Call barcodeCapture.isEnabled = false at the top of onBarcodeScanned before doing any work to prevent duplicate or racing scans. Re-enable with barcodeCapture.isEnabled = true when the app is ready to scan again.
• Android symbology names use underscores: Symbology.EAN13_UPCA, Symbology.CODE39, Symbology.INTERLEAVED_TWO_OF_FIVE — not camelCase.
• Turn the camera off in onPause() and re-enable in onResume(). The camera must not be active while the app is backgrounded.
• Request the CAMERA permission at runtime before the first scan; the manifest declaration alone is not sufficient.
• DataCaptureView.newInstance(this, dataCaptureContext) creates the camera preview widget. In an Activity, pass it to setContentView(dataCaptureView). In a Fragment, add it to the view hierarchy programmatically.