How to change Android DatePicker Dialog's “Dividers” Colors

Question

I\'m trying to create a custom dialog, basically I\'m using DatePickerDialog.THEME_HOLO_DARK but I want to change the \"divider\" color and the text color.

Answer 1

     fun applyStyLing(timePickerDialog: DatePickerDialog,context: Context) {

        try {
            var dividerId = timePickerDialog.getContext().getResources().getIdentifier("titleDivider", "id", "android")
            val divider = timePickerDialog.findViewById(dividerId)
            divider.setBackgroundColor(ContextCompat.getColor(context, R.color.colorDatePicker))

            var dividerId1 = timePickerDialog.getContext().getResources().getIdentifier("alertTitle", "id", "android")
            val divider1 = timePickerDialog.findViewById(dividerId1)
            divider1.setTextColor(ContextCompat.getColor(context, R.color.colorDatePicker))

            val system = Resources.getSystem()
            val hourNumberPickerId = system.getIdentifier("day", "id", "android")
            val minuteNumberPickerId = system.getIdentifier("month", "id", "android")
            val ampmNumberPickerId = system.getIdentifier("year", "id", "android")

            val hourNumberPicker = timePickerDialog.findViewById(hourNumberPickerId) as NumberPicker
            val minuteNumberPicker = timePickerDialog.findViewById(minuteNumberPickerId) as NumberPicker
            val ampmNumberPicker = timePickerDialog.findViewById(ampmNumberPickerId) as NumberPicker

            setNumberPickerDividerColour(hourNumberPicker,context)
            setNumberPickerDividerColour(minuteNumberPicker,context)
            setNumberPickerDividerColour(ampmNumberPicker,context)

        }catch (e:Exception)
        {
            e.printStackTrace()
        }

    }


private fun setNumberPickerDividerColour(number_picker: NumberPicker,context: Context) {
        val count = number_picker.childCount

        for (i in 0 until count) {

            try {
                val dividerField = number_picker.javaClass.getDeclaredField("mSelectionDivider")
                dividerField.isAccessible = true
                val colorDrawable = ColorDrawable(context.getResources().getColor(R.color.colorDatePicker))
                dividerField.set(number_picker, colorDrawable)

                number_picker.invalidate()
            } catch (e: NoSuchFieldException) {
                Log.w("setNumberPickerTxtClr", e)
            } catch (e: IllegalAccessException) {
                Log.w("setNumberPickerTxtClr", e)
            } catch (e: IllegalArgumentException) {
                Log.w("setNumberPickerTxtClr", e)
            }

        }
    }