Unity 3D 开发--UI管理框架

一、UI基类

一般情况下都是用Panel做容器来放各种控件的，一个Panle相当一个UI小界面，然后做成Prefab进行加载，所有界面都有载入载出功能，有的可能还有等待和恢复的，适合建立一个UI基类，然后各个子界面继承。

 public abstract class WUIBasePanel : MonoBehaviour
    {
        public abstract void OnEnter();
        public abstract void OnExit();
        public abstract void OnPause();
        public abstract void OnResume();

    }

二、UI子类

每个UI子界面都继承基类，然后实现各个方法，加载的时候可以在OnEnter()方法做一些显示动画或一些状态的改变等，OnExit()里可以做消失动画和一些关闭界面需要做的操作等。为了方便统一启用和禁用管理都添加CanvasGroup组件，也可以用来做隐藏和显示。

public class WUIPanel1 : WUIBasePanel
{

    private CanvasGroup canvasGroup;
    public override void OnEnter()
    {
        if (canvasGroup == null)
        {
            canvasGroup = GetComponent();
        }
        canvasGroup.blocksRaycasts = true;
        gameObject.SetActive(true);
    }

    public override void OnExit()
    {
        canvasGroup.blocksRaycasts = false;
        gameObject.SetActive(false);
    }

    public override void OnPause()
    {
        canvasGroup.blocksRaycasts = false;
    }

    public override void OnResume()
    {
        canvasGroup.blocksRaycasts = true;
    }
    public void ClosePanel1()
    {
        WUIManager.instance.PopPanel();
    }

    public void OpenPanel2()
    {
        WUIManager.instance.PushPanel("UIPanel2");
    }

三、UI管理类

需要一个Manager类统一管理所有的UI类，做成单例，因为每个Panel都是做成预制体来加载，所以需要一个Dictionary进行管理每个预制体所有的路径，每个预制体势力后也同一个Dictionary来管理做缓存，一个界面打开子界面，再打开孙界面，先关了孙界面才能管子界面，所以适合使用一个Stack来管理界面的显示和关闭。方法也建立两个一个PushPanel（），一个PopPanel（）。

public class WUIManager
{
    private static WUIManager Instance;
    public static WUIManager instance
    {
        get
        {
            if (Instance == null)
            {
                Instance = new WUIManager();
            }
            return Instance;
        }
    }

    public Dictionary pathDict = new Dictionary
    {
        { "UIPanel1","UIPanel/Panel1"},
         { "UIPanel2","UIPanel/Panel2"},
         { "UIPanel3","UIPanel/Panel3"}
    };

    private Dictionary panelDict = new Dictionary();
    private Stack panelStack;
    private Transform CanvasTransform;
    public Transform canvasTransform
    {
        get
        {
            if (CanvasTransform == null)
            {
                CanvasTransform = GameObject.Find("Canvas").transform;
            }
            return CanvasTransform;
        }
    }

    /// 

    /// 显示界面
    /// 
    /// 
    public void PushPanel(string panelName)
    {
        if (panelStack == null)
        {
            panelStack = new Stack();
        }
        if (panelStack.Count > 0)
        {
            WUIBasePanel topPanel = panelStack.Peek();
            topPanel.OnPause();
        }
        WUIBasePanel panel = GetPanel(panelName);
        Debug.Log("push panel:" + panel.name);
        panel.OnEnter();
        panelStack.Push(panel);
    }

    /// 

    /// 隐藏界面，隐藏逻辑自己写在界面代码里
    /// 
    public void PopPanel()
    {
        if (panelStack == null || panelStack.Count < 1)
        {
            Debug.Log("stack have no panel");
            return;
        }
        else
        {
            WUIBasePanel topPanel = panelStack.Pop();
            topPanel.OnExit();
            if (panelStack.Count > 0)
            {
                WUIBasePanel curPanel = panelStack.Peek();
                curPanel.OnResume();
            }
        }
    }

四、使用

显示

WUIManager.instance.PushPanel("UIPanel1");

关闭

WUIManager.instance.PopPanel();

效果如下：

 五、源码

https://download.csdn.net/download/emailforwei/87254372