dismiss DialogFragment for Android (SDK 22) in Kotlin 1.0.2

XXXDialogFragment

package xxx.view

import android.app.Activity
import android.app.AlertDialog
import android.app.Dialog
import android.app.DialogFragment
import android.os.Bundle
import android.support.v7.widget.RecyclerView
import xxx.R

class XXXDialogFragment() : DialogFragment() {

    interface XXXDialogListener {
        fun onXXX(name: String)
    }

    companion object {
        private val TAG = NewSettingDialogFragment::class.qualifiedName
        private val ARG_NAMES = "names"

        fun show(activity: Activity, names: Array<String>) {
            XXXDialogFragment().apply {
                arguments = Bundle().apply {
                    putCharSequenceArray(ARG_NAMES, names)
                }
            }.show(activity.fragmentManager, TAG)
        }
    }

    private var adapter: XXXRecyclerViewAdapter? = null

    override fun onAttach(activity: Activity) {
        super.onAttach(activity)
        if (activity is XXXDialogListener) {
            adapter = XXXRecyclerViewAdapter(activity)
        }
    }

    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog? {
        val names = arguments.getCharSequenceArray(ARG_NAMES)
        val view = activity.layoutInflater.inflate(R.layout.dialog, null) as RecyclerView
        view.adapter = adapter
        return AlertDialog.Builder(activity)
                .setTitle("Sample Dialog")
                .setView(view)
                .create()
                .apply {
                    setCanceledOnTouchOutside(false)
                    adapter?.let {
                        it.dismiss = { this.dismiss() }
                        it.names = names
                    }
                }
    }

    override fun onDetach() {
        super.onDetach()
        adapter = null
    }
}

XXXRecyclerViewAdapter.kt

package xxx.view

import android.support.v7.widget.RecyclerView
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.TextView
import xxx.R

class XXXRecyclerViewAdapter(val listener: XXXDialogFragment.XXXDialogListener) :
        RecyclerView.Adapter<XXXRecyclerViewAdapter.ViewHolder>() {

    var dismiss: (() -> Unit) = {}
    var names: List<String> = listOf()

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
        val view = LayoutInflater.from(parent.context).inflate(R.layout.item, parent, false)
        return ViewHolder(view)
    }

    override fun getItemCount(): Int = items.size

    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        holder.name = names[position]
        holder.nameView.setOnClickListener {
            listener.onXXX(holder.name)
            dismiss.invoke()
        }
    }

    class ViewHolder(val view: View) : RecyclerView.ViewHolder(view) {
        val nameView = view.findViewById(R.id.name) as TextView

        var name: String
            get() = nameView.text.toString()
            set(name) {
                nameView.text = name
            }
    }
}