Code for article "Using Kotlin to bind Android views"

PlanningActivity.kt

fun <ViewT : View> Activity.bindView(@IdRes idRes: Int): Lazy<ViewT> {
  return lazyUnsychronized {
    findViewById<ViewT>(idRes)
  }
}

class PlanningActivity : AppCompatActivity() {
  private val planningText by bindView<TextView>(R.id.planning_text)
  // or
  private val planningText: TextView by bindView(R.id.planning_text)
}