Kotlin synthetic in Adapter or ViewHolder

Question

I am new in kotlin. I have found and tried to use synthetic method instead of annoying method findViewById in my Activity class, but I have found "If we want to call the synthetic properties on View (useful in adapter classes), we should also import kotlinx.android.synthetic.main.view.*." But I can't figure out how it exactly works? Is there any examples?

Answer 1

Simple example from https://github.com/antoniolg/Kotlin-for-Android-Developers

import kotlinx.android.synthetic.item_forecast.view.*  class ForecastListAdapter() : RecyclerView.Adapter<ForecastListAdapter.ViewHolder>() {      class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {          fun bindForecast(forecast: Forecast) {             itemView.date.text = forecast.date.toDateString()         }     } } 

No need to write

val view = itemView.findViewById(R.id.date) as TextView view.text = forecast.date.toDateString() 

Just

itemView.date.text = forecast.date.toDateString() 

Simple and effective!