前言

刚开始使用Unity开发项目，目前工作需求以Unity2D开发为主！发现在以Unity开发的管理系统中，时常要用到日期选择的工具！所以归类提炼不同的实现方式。这款日期选择组件基本实现灵活选择、设置日期（年月日格式）！方便每次使用！

一、组件结构

二、使用步骤

1.脚本列表

2.绑定说明

1.外层作为总控制层

绑定DatePickerUI脚本，控制选择时间反显、反显格式以及时间清空功能。

注释：绑定位置为下图显示！

DatePickerUI核心代码


        protected override void Awake()
        {
            //info_tex = this.transform.Find("info_tex").GetComponent<Text>();
            _dateText = this.transform.Find("startDate_tex").GetComponent<Text>();
            _enddateText = this.transform.Find("endDate_tex").GetComponent<Text>();
            _calendar = this.transform.Find("calendarUIper").GetComponent<CalendarUI>();
            _endcalendar = this.transform.Find("endcalendarUIper").GetComponent<CalendarUI>();
            transform.Find("startCalendar_but").GetComponent<Button>().onClick.AddListener(() =>
            {
                //info_tex.text = "";
                _calendar.gameObject.SetActive(true);
                _endcalendar.gameObject.SetActive(false);
                _calendar.onDayClick.AddListener(dateTime => { DateTime = dateTime; });
                transform.Find("calendarUIper/title/clear_but").GetComponent<Button>().onClick.AddListener(()=> { refreshDateText("1"); });
            });
            transform.Find("endCalendar_but").GetComponent<Button>().onClick.AddListener(() =>
            {
                //info_tex.text = "";
                _endcalendar.gameObject.SetActive(true);             
                _calendar.gameObject.SetActive(false);
                _endcalendar.onDayClick.AddListener(dateTime => { EndDateTime = dateTime; });
                transform.Find("endcalendarUIper/title/clear_but").GetComponent<Button>().onClick.AddListener(() => { refreshEndDateText("1"); });
            }); 
        }

        public void refreshDateText(String i)
        {
            if ("".Equals(i))
            {
                switch (_calendar.CalendarType)
                {
                    case E_CalendarType.Day:
                        _dateText.text = DateTime.Year + "-" + DateTime.Month + "-" + DateTime.Day;
                        break;
                    case E_CalendarType.Month:
                        _dateText.text = DateTime.Year + "-" + DateTime.Month;
                        break;
                    case E_CalendarType.Year:
                        _dateText.text = DateTime.Year + "";
                        break;
                }
            }
            else {
                _dateText.text = "";
            }    
            _calendar.gameObject.SetActive(false);
        }

        public void refreshEndDateText(String i)
        {
            if ("".Equals(i))
            {
                switch (_endcalendar.CalendarType)
                {
                    case E_CalendarType.Day:
                        _enddateText.text = EndDateTime.Year + "-" + EndDateTime.Month + "-" + EndDateTime.Day;
                        break;
                    case E_CalendarType.Month:
                        _enddateText.text = EndDateTime.Year + "-" + EndDateTime.Month;
                        break;
                    case E_CalendarType.Year:
                        _enddateText.text = EndDateTime.Year + "";
                        break;
                }
            }
            else {
                _enddateText.text = "";
            }
            _endcalendar.gameObject.SetActive(false);
        }

2.选择日期模块

绑定CalendarUI脚本，是实现日期列表加载、切换、选择功能。

注释：绑定位置为下图显示！

CalendarUI核心代码

 private void OnTimeButtonClick()
        {
            if (CalendarType == E_CalendarType.Month)
                CalendarType = E_CalendarType.Year;
            if (CalendarType == E_CalendarType.Day)
            {
                CalendarType = E_CalendarType.Month;
                calendarTypeChange(false);
            }
            Refresh();
        }
 private void OnNextButtonClick()
        {
            if (CalendarType == E_CalendarType.Day)
                m_selectDT = m_selectDT.AddMonths(1);
            else if (CalendarType == E_CalendarType.Month)
                m_selectDT = m_selectDT.AddYears(1);
            else
                m_selectDT = m_selectDT.AddYears(12);
            Refresh();
        }
        private void OnLastButtonClick()
        {
            if (CalendarType == E_CalendarType.Day)
                m_selectDT = m_selectDT.AddMonths(-1);
            else if (CalendarType == E_CalendarType.Month)
                m_selectDT = m_selectDT.AddYears(-1);
            else
                m_selectDT = m_selectDT.AddYears(-12);
            Refresh();
        }
  private void WeekGenerator(GameObject weekPrefab, Transform parent)
        {
            for (int i = 0; i < 7; i++)
            {
                GameObject week = prefabGenerator(weekPrefab, parent);
                week.GetComponent<Text>().text = getWeekName(i.ToString());
            }
            Destroy(weekPrefab);
        }
        private void DayGenerator(GameObject dayPrefab, Transform parent)
        {
            for (int i = 0; i < 42; i++)
            {
                GameObject day = prefabGenerator(dayPrefab, parent);
                DMY dmy = day.AddComponent<DMY>();
                day.GetComponent<Button>().onClick.AddListener(() =>
                {
                    m_selectDT = dmy.DateTime;
                    onDayClick.Invoke(dmy.DateTime);
                    Refresh();
                });
                _daysPool.Add(dmy);
            }
            Destroy(dayPrefab);
        }
        private void MonthGenerator(GameObject monthPrefab, Transform parent)
        {
            for (int i = 0; i < 12; i++)
            {
                GameObject month = prefabGenerator(monthPrefab, parent);
                DMY dmy = month.AddComponent<DMY>();
                month.GetComponent<Button>().onClick.AddListener(() =>
                {
                    m_selectDT = dmy.DateTime;
                    if (CalendarType == E_CalendarType.Month)
                    {
                        CalendarType = E_CalendarType.Day;
                        calendarTypeChange(true);
                        onMonthClick.Invoke(dmy.DateTime);
                    }
                    if (CalendarType == E_CalendarType.Year)
                    {
                        CalendarType = E_CalendarType.Month;
                        onYearClick.Invoke(dmy.DateTime);
                    }
                    Refresh();
                });
                _monthYearPool.Add(dmy);
            }
            Destroy(monthPrefab);
        }

收获

通过在平台上整理组件，可以利用空余时间归类总结，更进一步梳理出简单的组件结构，巩固认识、加深理解！并在下次使用是快速使用，节约时间！同时可以记录分享！

总结

组件结构简单，层级明朗，便于理解。可更改ui和尺寸用于不同场合。个人总结归纳，便于使用。希望可以拿来直接使用，方便易懂，在开发过程中节约时间、避免重复造轮子~~~

CSDN组件下载：https://download.csdn.net/download/u014641682/87563968

Unity 日历插件组件-日期选择器2D（二）

前言