Now create a function called getPostById(id: Long), and we will pass the given postId from MainActivity. We will handle all the value in the specific TextView, such as MainActivity:

@SuppressLint("CheckResult")
private fun getPostById(id: Long){
    UtilMethods.showLoading(this)
    APIClient.postAPICall(PrefUtils.getUsername(this)!!, PrefUtils.getPassword(this)!!)
        .getPostById(id)
        .subscribeOn(Schedulers.io())
        .observeOn(AndroidSchedulers.mainThread())
        .subscribe({
                post ->
            postText_pd.text = post.text
            profileFullNamePost_pd.text = "${post.profile!!.firstName} ${post.profile!!.lastName}"
            usernamePost_pd.text = post.profile!!.username
            postedDate_pd.text = SimpleDateFormat(Constants.TIME_FORMAT).format(post.postCreatedTime!!)

            commentList = post.comment!!

            Log.wtf("******", commentList.toString())
            commentRecycleViewAdapter.setItems(commentList)
            commentRecycleViewAdapter.notifyDataSetChanged()

            UtilMethods.hideLoading()
        },{
                error ->
            UtilMethods.hideLoading()
            Log.wtf("******", error.message.toString())
            Toast.makeText(applicationContext, error.message.toString(), Toast.LENGTH_SHORT).show()
        })
}