appendText

      private fun appendText(message: String, type: Int) {
            val layout: FrameLayout
            when (type) {
                USER -> layout = appendUserText()
                BOT -> layout = appendBotText()
                else -> layout = appendBotText()
            }
            layout.isFocusableInTouchMode = true
            linear_chat.addView(layout)
            val tv = layout.findViewById<TextView>(R.id.chatMsg)
            tv.setText(message)
            Util.hideKeyboard(this)
            layout.requestFocus()
            edittext.requestFocus() // change focus back to edit text to continue typing
            if(type!= USER) asistan_voice?.speak(message,TextToSpeech.QUEUE_FLUSH,null)
        }