public static void setCameraPermissionReqCode(int cameraPermissionReqCode) {
        CaptureManager.cameraPermissionReqCode = cameraPermissionReqCode;
    }
Save the barcode image to a temporary file stored in the application's cache, and return its path.
Only does so if returnBarcodeImagePath is enabled.

@param rawResult the BarcodeResult, must not be null
@return the path or null
zxing-android-embedded/src/com/journeyapps/barcodescanner/CaptureManager.java