android - Datepicker 日付空白の問題

Question

カスタムの日付ピッカー ビューで問題に直面しています。テキストビューから選択した日付を再度クリックすると、日付が空白で表示されることがあります。

この記事から参照しました: https://readyandroid.wordpress.com/datepicker-with-customization-android/

問題 ：

コード :

 private fun showDatePickerDialog() {
        val cal = Calendar.getInstance()

        val dialogDatePicker =
            Dialog(context!!, R.style.LightDialogTheme)
        dialogDatePicker.window
            ?.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE)
        dialogDatePicker.window
            ?.setBackgroundDrawable(ColorDrawable(Color.TRANSPARENT))
        dialogDatePicker.setCancelable(true)
        val pickerView: View =
            LayoutInflater.from(context!!).inflate(R.layout.dialog_datepicker, null)
        val dPicker = pickerView.findViewById<DatePicker>(R.id.datePicker)


        DatePickerUtil.setFont(activity!!, dPicker, pickerView)
        DatePickerUtil.setDividerColor(dPicker, resources.getColor(R.color.btnColor))
        //   dPicker.maxDate = cal.timeInMillis

        val formatnew =
            SimpleDateFormat("EE, dd MMM yyyy", Locale.getDefault())

        val cal1 = Calendar.getInstance()
      //  cal1.add(Calendar.MONTH, 6)
        cal1.set(Calendar.MONTH, 11); // 11 = december
        cal1.set(Calendar.DAY_OF_MONTH, 31);
        dPicker.maxDate=cal1.timeInMillis

        if (selectedDate1 == "") {
            cal.set(Calendar.MONTH, 0); // 11 = december
            cal.set(Calendar.DAY_OF_MONTH, 1);
            dPicker.minDate = cal.timeInMillis
        } else {
            val date = formatnew.parse(selectedDate1)
            dPicker.minDate = date.time

            cal1.timeInMillis=date.time
            cal1.set(Calendar.MONTH, 11); // 11 = december
            cal1.set(Calendar.DAY_OF_MONTH, 31);
         //   cal1.add(Calendar.MONTH, 6)
            dPicker.maxDate=cal1.timeInMillis
        }

        dPicker.init(
            Calendar.getInstance()[Calendar.YEAR],
            Calendar.getInstance()[Calendar.MONTH],
            Calendar.getInstance()[Calendar.DAY_OF_MONTH]
        ) { view: DatePicker?, year: Int, monthOfYear: Int, dayOfMonth: Int ->
            val selected = Calendar.getInstance()
            selected[Calendar.YEAR] = year
            selected[Calendar.MONTH] = monthOfYear
            selected[Calendar.DAY_OF_MONTH] = dayOfMonth
            val format =
                SimpleDateFormat("EE, dd MMM yyyy", Locale.getDefault())
            val format1 =
                SimpleDateFormat("yyyy-MM-dd", Locale.getDefault())
            selectedDate = format.format(selected.time)
            receivedDate = format1.format(selected.time)
            val sdf = SimpleDateFormat(
                "yyyy-MM-dd'T'HH:mm:ssZZZZZ",
                Locale.getDefault()
            )

        /*val today = Date()
        val c: Calendar = Calendar.getInstance()
        c.time = today
        c.add(Calendar.MONTH, 6) // Add 6 months
        val maxDate: Long = c.time.time
        dPicker.maxDate = maxDate*/

            view?.let { DatePickerUtil.setFont(activity!!, it, pickerView) }
        }

        if (!TextUtils.isEmpty(cetLeaveFromDate.editText?.text.toString())) {
            val date: Date? =
                parseDateMonthYear(cetLeaveFromDate.editText?.text.toString().trim())
            if (date != null) {
                day = DateFormat.format("dd", date) as String
                month = DateFormat.format("MM", date) as String
                year = DateFormat.format("yyyy", date) as String
            }
            if (year != null || month != null || day != null) dPicker.updateDate(
                year!!.toInt(),
                month!!.toInt() - 1,
                day!!.toInt()
            )
        }

        pickerView.findViewById<View>(R.id.btnOkay)
            .setOnClickListener { view: View? ->
                dialogDatePicker.dismiss()
                if (selectedDate == "") {
                    if (selectedDate1 == "") {
                        val format =
                            SimpleDateFormat("EE, dd MMM yyyy", Locale.getDefault())
                        val format1 =
                            SimpleDateFormat("yyyy-MM-dd", Locale.getDefault())
                        selectedDate = format.format(Calendar.getInstance().time)
                        receivedDate = format1.format(Calendar.getInstance().time)
                    } else {
                        val format =
                            SimpleDateFormat("EE, dd MMM yyyy", Locale.getDefault())
                        val format1 =
                            SimpleDateFormat("yyyy-MM-dd", Locale.getDefault())
                        selectedDate = selectedDate1
                        receivedDate = selectedDate1
                    }

                }
                cetLeaveFromDate.setText(selectedDate)
                checkButtonStatusListener()
            }
        dialogDatePicker.setContentView(pickerView)
        if (!dialogDatePicker.isShowing) dialogDatePicker.show()
    }