每个游戏的有UI，合理的UI管理可以更加节省游戏资源。本篇是对UI框架的总结。

  UI框架就是把所有的UI做成Prefab存进Json文件中，等触发的时候再通过点击事件实例化出相应的UI预制体。这样做的好处是，游戏面板上什么都没有，用到什么就生成什么，为了避免重复生成，采用单例的方式来实现。

  一、搭建UI界面。

 

 

 二、写代码：

 

using System.Collections;using System.Collections.Generic;using UnityEngine;using System;//转化枚举信息给json解析提供值[Serializable]//序列化信息（把对象转化为文本，转换为二进制）public class UIPanelInfo : ISerializationCallbackReceiver//序列化接口{    [NonSerialized]    public UIPanelType type;//定义枚举    public string PanelTypeString;    public string path;//json解析时要把该类信息都传递过去，所以path信息也要获取    public void OnAfterDeserialize()//反序列化之后执行的内容就是文本变对象    {           UIPanelType typeinfo=(UIPanelType)Enum.Parse(typeof(UIPanelType),PanelTypeString);           type = typeinfo;    }    public void OnBeforeSerialize()    {           }}

using System.Collections;using System.Collections.Generic;using UnityEngine;public class TaskPanel: BasePanel{    private CanvasGroup cg;    // Use this for initialization    void Start () {        if (cg == null)        {            cg = GetComponent
     
      ();        }        cg = GetComponent
      
       ();    }    //重写显示界面    public override void OnEnter()    {        if (cg==null)        {            cg = GetComponent
       
        ();        }        cg.blocksRaycasts = true;        cg.alpha = 1;        }    public void ClosePanel() {        UIManager.Instance.PopPanel();    }    public override void OnExit()    {        cg.blocksRaycasts = false;        cg.alpha = 0;    }}--------------------------------------------------------------------------------using System.Collections;using System.Collections.Generic;using UnityEngine;public class BasePanel : MonoBehaviour{    /// 
        
    /// 显示界面    /// 
    public virtual void OnEnter() { }    /// 
        
    /// 暂停界面    /// 
    public virtual void OnPause() { }    /// 
        
    /// 继续界面（恢复交互）    /// 
    public virtual void OnResume() { }    /// 
        
    /// 退出界面（移除）    /// 
    public virtual void OnExit() { }}-------------------------------------------------------------------------------- //定义一个栈（Stack）    Stack
        
          stack;    /// 
         
    /// 把某个界面进栈，用于显示当前的界面    /// 
    public void PushPanel(UIPanelType panelType)    {        if (stack==null)        {            stack = new Stack
         
          ();        }        if (stack.Count>0)        {           Debug.Log(1231456);          BasePanel basePanel=  stack.Peek();//检测里面最上面的界面，然后去暂停          basePanel.OnPause();        }        Debug.Log(6666);        BasePanel bp  = GetPanel(panelType);          bp.OnEnter();         stack.Push(bp);    }    /// 
          
 /// 出栈就是把这个界面移除 /// 
    public void PopPanel()    {        Debug.Log("看一看");        if (stack == null)        {            stack = new Stack
          
           (); } if (stack.Count <= 0) return; //关闭栈顶的界面（peek的东西） BasePanel bp= stack.Pop();//出栈//关闭子界面（预示着原来的老界面要继续激活） bp.OnExit(); if (stack.Count <= 0) return; BasePanel basePanel= stack.Peek();//老界面（之前暂停的界面）拿出来激活 basePanel.OnResume();//可以继续交互了 }}--------------------------------------------------------------------------------using System.Collections;using System.Collections.Generic;using UnityEngine;using System;public class MainmenuPanel : BasePanel{ private CanvasGroup cg;void Start () { if (cg == null) { cg = GetComponent
           
            (); } cg = GetComponent
            
             ();} //告诉UImanger我想要哪个界面，你就给我生成或者直接拿给我 public void OnClickType(string type) { UIPanelType panelType= (UIPanelType)Enum.Parse(typeof(UIPanelType),type); UIManager.Instance.PushPanel(panelType); Debug.Log(type); } public override void OnPause() { if (cg == null) { cg = GetComponent
             
              (); } cg.blocksRaycasts = false; Debug.Log(888); } public override void OnResume() { base.OnResume(); cg.blocksRaycasts = true; } }--------------------------------------------------------------------------------using System.Collections;using System.Collections.Generic;using UnityEngine;public class KnapsackPanel : BasePanel{private CanvasGroup cg; // Use this for initialization void Start() { if (cg == null) { cg = GetComponent
              
               (); } } //重写显示界面 public override void OnEnter() { if (cg == null) { cg = GetComponent
               
                (); } cg.blocksRaycasts = true; cg.alpha = 1; } public override void OnPause() { Debug.Log("调用"); cg.blocksRaycasts = false; } public override void OnResume() { cg.blocksRaycasts = true; } public void ClosePanel() { UIManager.Instance.PopPanel(); } public override void OnExit() { cg.blocksRaycasts = false; cg.alpha = 0; } public void OnClickItem() { UIManager.Instance.PushPanel(UIPanelType.ItemMessage); }}
               
              
             
            
           
          
         
        
       
      
     

遇到的坑：

Json文件虽然可以读出来，但是无法在面板上显示，是因为Json文件里的变量名称要和代码里的变量名称一致，不然无法实别到。