Learning Concurrency in Kotlin

onCreateViewHolder

This implementation is quite straightforward. We will inflate the XML layout that we defined for the individual articles, and find the views that will be used to display the information:

override fun onCreateViewHolder(parent: ViewGroup,                                viewType: Int): ViewHolder {    val layout = LayoutInflater.from(parent.context)            .inflate(R.layout.article, parent, false) as LinearLayout    val feed = layout.findViewById<TextView>(R.id.feed)    val title = layout.findViewById<TextView>(R.id.title)    val summary = layout.findViewById<TextView>(R.id.summary)    return ViewHolder(layout, feed, title, summary)}

Now each time a new ViewHolder is needed, this function will be called.