NPE App crashes when going back from ScannerPage to the parentPage

[Tebra]

The App crashes when the ScanPage is in the OnDissapearing method and is setting the IsEnabled=false variable on slower devices.

The following exception was thrown: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.hardware.Camera.addCallbackBuffer(byte[])' on a null object

So the issue is in the following class on line 814: https://github.com/rebuy-de/rb-forms-barcode/blob/master/RebuyCameraSource/RebuyCameraSource/src/main/java/com/rebuy/play/services/vision/CameraSource.java

Can you please fix this and deploy a new version on nuget.

The fix could look like:

            // The code below needs to run outside of synchronization, because this will allow
            // the camera to add pending frame(s) while we are running detection on the current
            // frame.

            try {
                mDetector.receiveFrame(outputFrame);
            } catch (Throwable t) {
                Log.e(TAG, "Exception thrown from receiver.", t);
            } finally {
                if(mCamera != null && data != null && data.array != null) {
                    mCamera.addCallbackBuffer(data.array());
                }
            }

Thanks in advance!

Best regards