static String getFileName(Uri uri, Context context) {
        if (uri.getScheme().equals("file")) {
            return uri.getLastPathSegment();
        } else if (uri.getScheme().equals("content")) {
            return getFileNameForContent(uri, context);
        }

        return "Unknown";
    }
Verifies the content typs of a file URI. A helper function
for isVideoType and isImageType

@param contentMimeType - "video/" or "image/"
@param uri             - file uri
@param context         - react context
@return a boolean to determine if file is of specified content type i.e. image or video
android/src/main/java/com/imagepicker/Utils.java