切换时区后，选中日期后，时间戳异常

[walker0406]

/**DateTimeController
* 日期发生变化
*/
private fun onDateTimeChanged() {
syncDateData()
Log.d("DateTimePicker","$mYear-$mMonth-$mDay $mHour:$mMinute:$mSecond")

    millisecond = if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
        LocalDateTime.of(mYear, mMonth, mDay, mHour, mMinute, mSecond)
            .toInstant(ZoneOffset.ofHours(8)).toEpochMilli()
    } else {
        val mCalendar = Calendar.getInstance()
        mCalendar.set(mYear, mMonth-1, mDay, mHour, mMinute, mSecond)
        mCalendar.timeInMillis
    }

    if (mOnDateTimeChangedListener != null) {
        mOnDateTimeChangedListener?.invoke(millisecond)
    }
}

millisecond = if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
LocalDateTime.of(mYear, mMonth, mDay, mHour, mMinute, mSecond)
.toInstant(ZoneOffset.ofHours(8)).toEpochMilli()
} 为什么有这一段