UploadFacebook.kt

VideoUploader.uploadAsyncWithProgressCallback(
                videoContentBuilder.build(),
                pageId,
                object : GraphRequest.OnProgressCallback {
                    override fun onCompleted(response: GraphResponse) {
                 
                        // {Response:  responseCode: 200, graphObject: {"success":true,"video_id":"380208427529152"}

                        try {
                            val videoId = parseResponseVideoId(response.jsonObject)

                            if (videoId.isNullOrEmpty())
                                onFail("Failed to share video to Facebook: $response")
                            else
                                onSuccess(getPostUrl(userOrPageId, videoId))
                        } catch (e: Exception) {
                            onFail("Failed to share video to Facebook: ${e.localizedMessage}")
                        }
                    }

                    override fun onProgress(current: Long, max: Long) {

                        if (currentTime - lastTimeProgressUpdated > 1000) {
                            val progress: Float =
                                if (max > 0) (current * 100 / max.toFloat()) else 0F
                                
                            onProgress(progress)
                        }
                    }
                }
            )

UploadResultParse.kt

    @Throws(JSONException::class)
    private fun parseResponseVideoId(json: JSONObject?): String? =
        json?.getString(KEY_VIDEO_ID)

    private fun getPostUrl(userOrPageId: String, postId: String): String =
        "fb.com/$userOrPageId/$postId/"

    private const val KEY_VIDEO_ID = "video_id"