DatePickerDialog.OnDateSetListener内的Kotlin访问变量

Question

我在DatePickerDialog.OnDateSetListener的下面的函数中声明和初始化的变量很少：

fun pickDate(view: View) {
    val eventDate = (findViewById<TextView>(R.id.event_date_text_))
    val c = Calendar.getInstance()
    val year = c.get(Calendar.YEAR)
    val month = c.get(Calendar.MONTH)
    val day = c.get(Calendar.DAY_OF_MONTH)
    val months = arrayOf("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec")
    var monthOfYear = 0

    val dpd = DatePickerDialog(
            this,
            DatePickerDialog.OnDateSetListener { _, year, monthOfYear, dayOfMonth ->
                val date = "" + dayOfMonth + " " + months[monthOfYear] + " " + year
                eventDate.text = date
            },
            year,
            month,
            day
    )
    dpd.show()
}

我还有另一个函数createEvent（view：View），如何在同一类的createEvent函数中访问dayOfMonth，monthOfYear和Year？