Unity Toast插件(UGUI版)

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简介

介于自己之前经历的一些开发过程，非常希望unity能有类似Toast的功能用于一些简单的信息显示。但是找来找去找了半天，都木有发现，实在是憋不住了，自己写了个，感觉还可以用，发出来共享一下。。。

原理

原理嘛，就是先做一个Toast的prefeb，然后通过一个Manager将Toast生成出来，显示到Canvas。
然后出于性能考虑，由于反复Instantiate和Destroy对性能消耗巨大，所以内部使用了一个简单的Queue对生成出来的Toast进行了一个缓存。

使用方法

将prefeb中的ToastManager拖入到场景中
这里写图片描述
像这样

然后设置prefeb的参数：
第一个是可以用于显示的Canvas
第二个是Toast的对象池的大小
第三个是Toast的prefeb（可以在Res/Prefebs文件夹下找到）

代码调用方法：
简单的调用方法，默认的位置和颜色

    public void ShowTopToast(string str)    {        LTToastManager.Instance.ShowToast(str);    }

可以自定义的调用方法，手动设置颜色，显示时间以及位置

    public void ShowBottomToast(string str)    {        LTToast tempToast = LTToastManager.Instance.GetToast();        tempToast.SetColor(Color.green, Color.red);        tempToast.SetDuring(LTToast.DURING_LONG);        tempToast.SetText(str);        tempToast.SetPositionAndSize(LTToast.Position.Bottom);        tempToast.Show();    }

实际效果

这里写图片描述

代码

Toast类

using UnityEngine;using UnityEngine.UI;// 该类与LTToastManager强调用耦合// PS:本来是想写成参数传递进入的，但是想了想这两块代码本就是一个模块// 能不能算在内聚里面 O(∩_∩)O~public class LTToast : MonoBehaviour{    public enum Position    {        Bottom, Top, Custom    }    public Image background;    public Text toastStr;    public const float DURING_LONG = 1f;    public const float DURING_SHOR = 0.5f;    private const string ENTER_KEY = "enter";    private const string EXIT_KEY = "exit";    #region Top位置固定参数    private static Vector2 TopAnchorMin = new Vector2(0, 1);    private static Vector2 TopAnchorMax = new Vector2(1, 1);    private static Vector2 TopPivot = new Vector2(0.5f, 1);    private static Vector3 TopAnchoredPosition3D = new Vector3(0, 0, 0);    private static Vector2 TopSizeDelta = new Vector3(0, 50);    #endregion    #region Bottom位置固定参数    private static Vector2 BottomAnchorMin = new Vector2(0, 0);    private static Vector2 BottomAnchorMax = new Vector2(1, 0);    private static Vector2 BottomPivot = new Vector2(0.5f, 0);    private static Vector3 BottomAnchoredPosition3D = new Vector3(0, 0, 0);    private static Vector2 BottomSizeDelta = new Vector3(0, 50);    #endregion    #region 自定义位置参数    private Vector2 customAnchorMin = new Vector2(0, 0);    private Vector2 customAnchorMax = new Vector2(1, 0);    private Vector2 customPivot = new Vector2(0.5f, 0);    private Vector3 customAnchoredPosition3D = new Vector3(0, 0, 0);    private Vector2 customSizeDelta = new Vector3(0, 50);    #endregion    private RectTransform rectTransform;    private Animator mAnimator;    private float duringTime = DURING_SHOR;    private Position showPosition = Position.Top;    private bool isExit = false;    void Awake()    {        rectTransform = this.GetComponent<RectTransform>();        mAnimator = this.GetComponent<Animator>();    }    public void SetColor(Color backColor, Color textColor)    {        background.color = backColor;        toastStr.color = textColor;    }    public void SetDuring(float duringTime)    {        this.duringTime = duringTime;    }    public void SetText(string str)    {        toastStr.text = str;    }    public void SetPositionAndSize(Position showPosition)    {        this.showPosition = showPosition;    }    public void SetPositionAndSize(Vector2 min, Vector2 max, Vector2 pivot, Vector3 anchoredPosition, Vector2 size)    {        showPosition = Position.Custom;        customAnchorMin = min;        customAnchorMax = max;        customPivot = pivot;        customAnchoredPosition3D = anchoredPosition;        customSizeDelta = size;    }    private void SetPositionAndSize()    {        if (showPosition == Position.Top)        {            rectTransform.anchorMin = TopAnchorMin;            rectTransform.anchorMax = TopAnchorMax;            rectTransform.pivot = TopPivot;            rectTransform.anchoredPosition3D = TopAnchoredPosition3D;            rectTransform.sizeDelta = TopSizeDelta;        }        else if (showPosition == Position.Bottom)        {            rectTransform.anchorMin = BottomAnchorMin;            rectTransform.anchorMax = BottomAnchorMax;            rectTransform.pivot = BottomPivot;            rectTransform.anchoredPosition3D = BottomAnchoredPosition3D;            rectTransform.sizeDelta = BottomSizeDelta;        }        else if (showPosition == Position.Custom)        {            rectTransform.anchorMin = customAnchorMin;            rectTransform.anchorMax = customAnchorMax;            rectTransform.pivot = customPivot;            rectTransform.anchoredPosition3D = customAnchoredPosition3D;            rectTransform.sizeDelta = customSizeDelta;        }        else        {            Debug.LogError("检测到未定义位置，采用默认位置");            rectTransform.anchorMin = TopAnchorMin;            rectTransform.anchorMax = TopAnchorMax;            rectTransform.pivot = TopPivot;            rectTransform.anchoredPosition3D = TopAnchoredPosition3D;            rectTransform.sizeDelta = TopSizeDelta;        }    }    public void Show()    {        isExit = false;        // 强耦合        transform.SetParent(LTToastManager.Instance._ShowCanvas.transform);        // 设置位置及缩放的代码建议放在SetParent之后，防止蛋疼        transform.localScale = Vector3.one;        SetPositionAndSize();        mAnimator.Play(ENTER_KEY);    }    public void Cancel()    {        if (isExit)        {            return;        }        mAnimator.Play(EXIT_KEY);        isExit = true;    }    // UI帧调用，请勿更改    void EnterDone()    {        Invoke("Cancel", duringTime);    }    // UI帧调用，请勿更改    void ExitDone()    {        // 强耦合        transform.SetParent(LTToastManager.Instance.transform);        LTToastManager.Instance.ReturnToast(this);    }}

ToastManager类

using UnityEngine;using System.Collections.Generic;public class LTToastManager : MonoBehaviour{    private static LTToastManager mInstance;    public static LTToastManager Instance    {        get        {            return mInstance;        }    }    public Canvas _ShowCanvas;    public int _ToastPoolSize = 5;    public GameObject _PreToast;    private int currentIndex = 0;    private Queue<LTToast> toastPool;    void Awake()    {        mInstance = this;        toastPool = new Queue<LTToast>();        Init();    }    private void Init()    {        if (null == _ShowCanvas)        {            throw new System.Exception("未绑定Canvas");        }        if (null == _PreToast)        {            throw new System.Exception("未绑定Toast");        }        // 清除已有的,保持Manager目录清洁（没什么卵用，纯粹洁癖）        LTGame.LTUtils.ClearChildren(transform);        // 让对象池里面拥有一个Toast对象，提高第一次调用的效率        ReturnToast(GetToast());    }    public void ReturnToast(LTToast tempToast)    {        if (toastPool.Count < _ToastPoolSize)        {            toastPool.Enqueue(tempToast);        }        else        {            // 如果超出Toast池的最大大小则销毁            Destroy(tempToast.gameObject);        }    }    public LTToast GetToast()    {        if (toastPool.Count > 0)        {            return toastPool.Dequeue();        }        else        {            LTToast tempToast = Instantiate(_PreToast).GetComponent<LTToast>();            // 将新生成的对象放置到Manager目录下。            // PS:其实这段代码不应该放在这里，但是暂时木有找到更好的地方咯~~            tempToast.transform.SetParent(transform);            return tempToast;        }    }    public LTToast ShowToast(string str)    {        return ShowToast(str, LTToast.DURING_SHOR);    }    public LTToast ShowToast(string str, float duringTime)    {        return ShowToast(str, Color.black, Color.white, duringTime);    }    public LTToast ShowToast(string str, Color backColor, Color textColor)    {        return ShowToast(str, backColor, textColor, LTToast.DURING_SHOR);    }    public LTToast ShowToast(string str, Color backColor, Color textColor, float duringTime)    {        LTToast result = GetToast();        result.SetColor(backColor, textColor);        result.SetText(str);        result.SetDuring(duringTime);        result.SetPositionAndSize(LTToast.Position.Top);        result.Show();        return result;    }}

总结

也没啥好总结的，先用着吧，哪里不对再改~~~

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