An example of how to use doAsyncResult in Anko

op.kt

class PopularActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        listView {
          
            id = ViewID.ID_POPULAR_LIST
          
          // This task will happen asynchronously in a separate thread (so you can perform network operations)
          // and the returned value can be accessed through the Future object
          // f.get() blocks till the task is finished
            fun getTitles() : ArrayList<String> {
                val arr = ArrayList<String>()
                // add elements to list
                return arr
            }
          
          // so yeah, this is the tricky part (for me at least) since it wasn't updated in the documentation. Enjoy! :)
            val m: (AnkoAsyncContext<ListView>.() -> ArrayList<String>) = {
                ::getTitles.invoke()
            }
            val f : Future<ArrayList<String>> = doAsyncResult(null, m)
          
            adapter = ArrayAdapter<String>(ctx, android.R.layout.simple_list_item_1, f.get())
        }
    }
}