CaptureActivityHandler( CaptureActivity activity, Collection<BarcodeFormat> decodeFormats, String characterSet) { this.activity = activity; decodeThread = new DecodeThread( activity, decodeFormats, characterSet, new ViewfinderResultPointCallback(activity.getViewfinderView())); decodeThread.start(); state = State.SUCCESS; // Start ourselves capturing previews and decoding. CameraManager.get().startPreview(); restartPreviewAndDecode(); }