Unity 之模拟滑动日历选择日期简例（文末源码）

2021-03-19 10:28发布生成海报

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Unity 制作一个用于选择日期的小例子，，，

【经实践，此方式并不是很好，交互感很低（2019.02.23）推荐看下Demo2】

下面以选择月份为例：

搭建如下场景，，，对图中标记的地方的简要说明：SelectBg：模拟选中的当前日期，

month:做作为挂载脚本的物体，挂载Image组件将其透明度调为：0，，，然后创建其子物体，只挂载Text组件用于显示文字,并且为其命名1，2，3，4，5，，，以后获取的时候可以通过month.transform.getChild(2).GetComponent ().text --获取这个字符串的前两位

就是所选择的变量了，

完整代码如下：都需要挂载到month上，，，

【另:需把子物体的Text组件上的Raycast Target选项取消勾选，，，脚本不能挂载多个物体，使用多个是需代码移除和加载，】
如选择年月日不需分开，则可使用同一个物体下扩展，参考链接；

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using UnityEngine.EventSystems;

using UnityEngine.UI;

/// <summary>

/// 日历

/// </summary>

public class Rili : MonoBehaviour, IPointerDownHandler

{

public static Rili Singleton;

public GameObject go;

private List<GameObject> monthList = new List<GameObject>();

public static int yearValue = 1;

public static int monthValue = 1;

public static int dayValue = 1;

public static int hourValue = 1;

public static int minValue = 1;

private int curtime; //当前显示时间

private int isClickDownNum; //点击次数

public bool isCanDrag = true; //是否可拖动（避免其他文字隐藏时可以拖动）

void Awake()

{

Singleton = this;

}

void Start()

{

go = this.gameObject;

curtime = int.Parse(this.transform.GetChild(2).GetComponent<Text>().text.Substring(0, 2));

//Debug.Log(go.name + "...日历选择的初始化操作............" + curtime);

isClickDownNum = 1;

for (int i = 0; i < this.transform.childCount; i++)

{

this.transform.GetChild(i).gameObject.SetActive(false);

}

this.transform.GetChild(2).gameObject.SetActive(true);

Init();

UpdateTime();

//Debug.Log(go.name + "...日历选择的初始化操作............" + this.transform.GetChild(2).GetComponent<Text>().text);

}

/// <summary>

/// 初始化

/// </summary>

public void Init()

{

//可以获取当前时间或者上传编辑时间

yearValue = System.DateTime.Now.Year;

monthValue = curtime;

dayValue = curtime;

hourValue = curtime;

minValue = curtime;

foreach (Transform item in go.transform)

{

monthList.Add(item.gameObject);

item.gameObject.SetActive(true);

}

foreach (GameObject item in monthList)

{

string n = item.name;

float alpha = 1 - ((Mathf.Abs(3.0f - float.Parse(n)))) / 3;

item.gameObject.GetComponent<Text>().color = new Color(item.GetComponent<Text>().color.r, item.GetComponent<Text>().color.r, item.GetComponent<Text>().color.r, alpha);

item.GetComponent<Text>().fontSize = 32 - Mathf.Abs(3 - int.Parse(n));

}

/// <summary>

/// 隐藏其他显示在外面的时间文字

/// </summary>

public void HideOther()

{

for (int i = 0; i < this.transform.childCount; i++)

{

this.transform.GetChild(i).gameObject.SetActive(false);

}

this.transform.GetChild(2).gameObject.SetActive(true);

}

/// <summary>

/// 更新显示时间

/// </summary>

public void UpdateTime()

{

if (go.name == "year")

{

foreach (GameObject go in monthList)

{

int nn = int.Parse(go.name);

go.GetComponent<Text>().text = (nn - 3 + yearValue).ToString().Substring(2, 2) + "年";

}

if (go.name == "month")

{

foreach (GameObject go in monthList)

{

int nn = int.Parse(go.name);

int mm = Mathf.Abs(nn + monthValue - 3);

if (mm % 12 == 0)

{

go.GetComponent<Text>().text = "12月";

}

else

{

go.GetComponent<Text>().text = (Mathf.Abs(mm % 12) >= 10 ? Mathf.Abs(mm % 12).ToString() : "0" + Mathf.Abs(mm % 12)) + "月";

}

if (go.name == "day")

{

foreach (GameObject go in monthList)

{

int nn = int.Parse(go.name);

int mm = Mathf.Abs(nn + dayValue - 3);

//编辑月份和年份时存储的当前月&年使用PlayerPrefs.SetInt("PGMatchMonth"，Value)；保存

int dd = GetDayCount(PlayerPrefs.GetInt("PGMatchMonth"), PlayerPrefs.GetInt("PGMatchYear"));

//Debug.Log(nn + "....mm.." + mm + "... dd.." + dd);

if (mm % dd == 0)

{

go.GetComponent<Text>().text = dd + "日";

}

else

{

go.GetComponent<Text>().text = ((mm % dd >= 10) ? (mm % dd).ToString() : "0" + (mm % dd))+ "日";

}

if (go.name == "hour")

{

foreach (GameObject go in monthList)

{

int nn = int.Parse(go.name);

int mm = nn + hourValue - 3;

int hour = 24;

//Debug.Log("nn"+ nn + "... mm" + mm+ "...minValue % hour"+ minValue % hour);

if (mm % hour == 0)

{

go.GetComponent<Text>().text = "00时";

}

else

{

go.GetComponent<Text>().text = (Mathf.Abs(mm % hour) >= 10 ? (Mathf.Abs(mm % hour).ToString()) : "0" + Mathf.Abs(mm % hour)) + "时";

}

if (go.name == "min")

{

foreach (GameObject go in monthList)

{

int nn = int.Parse(go.name);

int mm = nn + minValue - 3;

if (mm % 60 == 0)

{

go.GetComponent<Text>().text = "00分";

}

else

{

go.GetComponent<Text>().text = (Mathf.Abs(mm % 60) >= 10 ? (Mathf.Abs(mm % 60).ToString()) : "0" + Mathf.Abs(mm % 60)) + "分";

}

public void OnPointerDown(PointerEventData eventData)

{

Debug.Log("OnPointerDown...>>>>>>>>>>>>>>>>>> " + isClickDownNum);

if (isClickDownNum == 1)

{

monthList.Clear();

Init();

isCanDrag = true;

}

else if (isClickDownNum == 2)

{

isCanDrag = true;

}

else if (isClickDownNum == 3)

{

for (int i = 0; i < this.transform.childCount; i++)

{

this.transform.GetChild(i).gameObject.SetActive(false);

}

this.transform.GetChild(2).gameObject.SetActive(true);

isClickDownNum = 0;

isCanDrag = false;

}

isClickDownNum++;

}

//返回有几天

int GetDayCount(int month,int year)

{

//不符合条件的默认查的是1月

if (month > 12 || month < 1) return 31;

//是否是闰年，当前只用2019，

if (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0))

{

if (month == 2) return 29;

}

else

{

if (month == 2) return 28;

}

switch (month)

{

case 1:

case 3:

case 5:

case 7:

case 8:

case 10:

case 12:

return 31;

case 4:

case 6:

case 9:

case 11:

return 30;

default:break;

}

return 31;

}

using System;

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using UnityEngine.EventSystems;

/// <summary>

///日期选择模拟拖动效果

/// </summary>

public class RiLiMove : MonoBehaviour,IPointerDownHandler, IPointerUpHandler

{

public GameObject go;

private string name;

private bool isDown = false;

Vector3 mouseDown_Pos; //首次按下坐标

Vector3 atDown_Pos; //当前按下坐标

float distance = 0; //距离差值

private float self_y; //当前对象的y值

void Awake () {

go = this.gameObject;

self_y = GetComponent<RectTransform>().localPosition.y;

name = go.name;

}

// Update is called once per frame

void Update () {

if (isDown && Rili.Singleton.isCanDrag)

{

atDown_Pos = Input.mousePosition;

distance = atDown_Pos.y - mouseDown_Pos.y;

mouseDown_Pos = atDown_Pos;

go.GetComponent<RectTransform>().localPosition += new Vector3(0, distance, 0);

if (Mathf.Abs(self_y - GetComponent<RectTransform>().localPosition.y) >= 5)

{

//Debug.Log(self_y + " ... " +GetComponent<RectTransform>().localPosition.y);

if (self_y - GetComponent<RectTransform>().localPosition.y < 0)

{

if (name == "year")

Rili.yearValue += 1;

if (name == "month")

Rili.monthValue += 1;

if (name == "day")

Rili.dayValue += 1;

if (name == "hour")

Rili.hourValue += 1;

if (name == "min")

Rili.minValue += 1;

}

else

{

if (name == "year")

Rili.yearValue -= 1;

if (name == "month")

Rili.monthValue -= 1;

if (name == "day")

Rili.dayValue -= 1;

if (name == "hour")

Rili.hourValue -= 1;

if (name == "min")

Rili.minValue -= 1;

}

Rili.Singleton.UpdateTime();

go.GetComponent<RectTransform>().localPosition = new Vector3(go.GetComponent<RectTransform>().localPosition.x, self_y);

}

public void OnPointerDown(PointerEventData eventData)

{

//Debug.Log("RiLiMove OnPointerDown ... <<<<<<<<<" + name);

mouseDown_Pos = Input.mousePosition;

isDown = true;

}

public void OnPointerUp(PointerEventData eventData)

{

//Debug.Log("RiLiMove OnPointerUp ... >>>>>>>>>" + name);

isDown = false;

}

看看效果图吧：

需要源码的童鞋可以点击链接下载

Demo2：
下载链接
 讲解地址

没有积分的同学可以V信搜"开发同学留步"或者扫描主页左侧二维码，回复“日历”获得两个Demo项目源码。

————————————————

原文链接：https://blog.csdn.net/Czhenya/article/details/86629460

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