NotHideableBottomSheetDialogFragment.kt

package com.example.kotlin

import android.app.Dialog
import android.support.design.widget.BottomSheetBehavior
import android.support.design.widget.BottomSheetDialogFragment
import android.support.design.widget.CoordinatorLayout
import android.util.Log
import android.view.View
import android.widget.TextView
import com.example.drobysh.kotlinrxjava.R
import rx.Observable
import rx.android.schedulers.AndroidSchedulers
import rx.observers.Subscribers
import rx.subscriptions.Subscriptions
import java.util.concurrent.TimeUnit

class NotHideableBottomSheetDialogFragment : BottomSheetDialogFragment() {

    var subscription = Subscriptions.empty()
    var tv: TextView? = null

    override fun onResume() {
        super.onResume()
        Log.i("test", "onResume")

        if (tv != null) {
            subscription = Observable.interval(1, TimeUnit.SECONDS)
                    .observeOn(AndroidSchedulers.mainThread())
                    .subscribe(Subscribers.create {
                        log("tick")
                        tv?.text = "$it"
                    })
        }
    }

    override fun onPause() {
        super.onPause()
        Log.i("test", "onPause")
        subscription.unsubscribe()
    }

    override fun onDestroyView() {
        Log.i("test", "onDestroyView")
        tv = null
        super.onDestroyView()
    }

    override fun setupDialog(dialog: Dialog, style: Int) {
        Log.i("test", "setupDialog")
        super.setupDialog(dialog, style)
        val contentView = View.inflate(context, R.layout.sheet_dialog, null)
        dialog.setContentView(contentView)

        val height = arguments?.getInt("height", 300) ?: 300

        val behavior = ((contentView.parent as View).layoutParams as CoordinatorLayout.LayoutParams).behavior

        tv = contentView.findViewById(R.id.tv_text) as TextView
        contentView.findViewById(R.id.btn).setOnClickListener({

        })

        if (behavior != null && behavior is BottomSheetBehavior<*>) {
            behavior.peekHeight = height
            behavior.isHideable = false
        }

        val touchOutsideView = getDialog().window!!.decorView.findViewById(android.support.design.R.id.touch_outside)
        touchOutsideView.setOnClickListener { dismiss() }
    }

    private fun log(s: String) {
        Log.i("log", s)
    }
}