UI基類BasePanel

負(fù)責(zé)幫助我們通過代碼快速的找到所有的子控件，方便我們?cè)谧宇愔刑幚磉壿?，?jié)約找控件的工作量。

public class BasePanel : MonoBehaviour
{
    //通過里式轉(zhuǎn)換原則 來存儲(chǔ)所有的控件
    private Dictionary<string, List<UIBehaviour>> controlDic = new Dictionary<string, List<UIBehaviour>>();

	// Use this for initialization
	protected virtual void Awake () {
        FindChildrenControl<Button>();
        FindChildrenControl<Image>();
        FindChildrenControl<Text>();
        FindChildrenControl<Toggle>();
        FindChildrenControl<Slider>();
        FindChildrenControl<ScrollRect>();
        FindChildrenControl<InputField>();
    }
	
    /// <summary>
    /// 顯示自己
    /// </summary>
    public virtual void ShowMe()
    {
        
    }

    /// <summary>
    /// 隱藏自己
    /// </summary>
    public virtual void HideMe()
    {

    }

    protected virtual void OnClick(string btnName)
    {

    }

    protected virtual void OnValueChanged(string toggleName, bool value)
    {

    }

    /// <summary>
    /// 得到對(duì)應(yīng)名字的對(duì)應(yīng)控件腳本
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="controlName"></param>
    /// <returns></returns>
    protected T GetControl<T>(string controlName) where T : UIBehaviour
    {
        if(controlDic.ContainsKey(controlName))
        {
            for( int i = 0; i <controlDic[controlName].Count; ++i )
            {
                if (controlDic[controlName][i] is T)
                    return controlDic[controlName][i] as T;
            }
        }

        return null;
    }

    /// <summary>
    /// 找到子對(duì)象的對(duì)應(yīng)控件
    /// </summary>
    /// <typeparam name="T"></typeparam>
    private void FindChildrenControl<T>() where T:UIBehaviour
    {
        T[] controls = this.GetComponentsInChildren<T>();
        for (int i = 0; i < controls.Length; ++i)
        {
            string objName = controls[i].gameObject.name;
            if (controlDic.ContainsKey(objName))
                controlDic[objName].Add(controls[i]);
            else
                controlDic.Add(objName, new List<UIBehaviour>() { controls[i] });
            //如果是按鈕控件
            if(controls[i] is Button)
            {
                (controls[i] as Button).onClick.AddListener(()=>
                {
                    OnClick(objName);
                });
            }
            //如果是單選框或者多選框
            else if(controls[i] is Toggle)
            {
                (controls[i] as Toggle).onValueChanged.AddListener((value) =>
                {
                    OnValueChanged(objName, value);
                });
            }
        }
    }
}

UI管理模塊UIManager

管理所有顯示的面板，提供給外部 顯示和隱藏等等方法。文章來源地址http://www.zghlxwxcb.cn/news/detail-636677.html

/// <summary>
/// UI層級(jí)
/// </summary>
public enum E_UI_Layer
{
    Bot,
    Mid,
    Top,
    System,
}

/// <summary>
/// UI管理器
/// 1.管理所有顯示的面板
/// 2.提供給外部 顯示和隱藏等等接口
/// </summary>
public class UIManager : BaseManager<UIManager>
{
    public Dictionary<string, BasePanel> panelDic = new Dictionary<string, BasePanel>();

    private Transform bot;
    private Transform mid;
    private Transform top;
    private Transform system;

    //記錄我們UI的Canvas父對(duì)象 方便以后外部可能會(huì)使用它
    public RectTransform canvas;

    public UIManager()
    {
        //創(chuàng)建Canvas 讓其過場(chǎng)景的時(shí)候 不被移除
        GameObject obj = ResMgr.GetInstance().Load<GameObject>("UI/Canvas");
        canvas = obj.transform as RectTransform;
        GameObject.DontDestroyOnLoad(obj);

        //找到各層
        bot = canvas.Find("Bot");
        mid = canvas.Find("Mid");
        top = canvas.Find("Top");
        system = canvas.Find("System");

        //創(chuàng)建EventSystem 讓其過場(chǎng)景的時(shí)候 不被移除
        obj = ResMgr.GetInstance().Load<GameObject>("UI/EventSystem");
        GameObject.DontDestroyOnLoad(obj);
    }

    /// <summary>
    /// 通過層級(jí)枚舉 得到對(duì)應(yīng)層級(jí)的父對(duì)象
    /// </summary>
    /// <param name="layer"></param>
    /// <returns></returns>
    public Transform GetLayerFather(E_UI_Layer layer)
    {
        switch(layer)
        {
            case E_UI_Layer.Bot:
                return this.bot;
            case E_UI_Layer.Mid:
                return this.mid;
            case E_UI_Layer.Top:
                return this.top;
            case E_UI_Layer.System:
                return this.system;
        }
        return null;
    }

    /// <summary>
    /// 顯示面板
    /// </summary>
    /// <typeparam name="T">面板腳本類型</typeparam>
    /// <param name="panelName">面板名</param>
    /// <param name="layer">顯示在哪一層</param>
    /// <param name="callBack">當(dāng)面板預(yù)設(shè)體創(chuàng)建成功后 你想做的事</param>
    public void ShowPanel<T>(string panelName, E_UI_Layer layer = E_UI_Layer.Mid, UnityAction<T> callBack = null) where T:BasePanel
    {
        if (panelDic.ContainsKey(panelName))
        {
            panelDic[panelName].ShowMe();
            // 處理面板創(chuàng)建完成后的邏輯
            if (callBack != null)
                callBack(panelDic[panelName] as T);
            //避免面板重復(fù)加載 如果存在該面板 即直接顯示 調(diào)用回調(diào)函數(shù)后  直接return 不再處理后面的異步加載邏輯
            return;
        }

        ResMgr.GetInstance().LoadAsync<GameObject>("UI/" + panelName, (obj) =>
        {
            //把他作為 Canvas的子對(duì)象
            //并且 要設(shè)置它的相對(duì)位置
            //找到父對(duì)象 你到底顯示在哪一層
            Transform father = bot;
            switch(layer)
            {
                case E_UI_Layer.Mid:
                    father = mid;
                    break;
                case E_UI_Layer.Top:
                    father = top;
                    break;
                case E_UI_Layer.System:
                    father = system;
                    break;
            }
            //設(shè)置父對(duì)象  設(shè)置相對(duì)位置和大小
            obj.transform.SetParent(father);

            obj.transform.localPosition = Vector3.zero;
            obj.transform.localScale = Vector3.one;

            (obj.transform as RectTransform).offsetMax = Vector2.zero;
            (obj.transform as RectTransform).offsetMin = Vector2.zero;

            //得到預(yù)設(shè)體身上的面板腳本
            T panel = obj.GetComponent<T>();
            // 處理面板創(chuàng)建完成后的邏輯
            if (callBack != null)
                callBack(panel);

            panel.ShowMe();

            //把面板存起來
            panelDic.Add(panelName, panel);
        });
    }

    /// <summary>
    /// 隱藏面板
    /// </summary>
    /// <param name="panelName"></param>
    public void HidePanel(string panelName)
    {
        if(panelDic.ContainsKey(panelName))
        {
            panelDic[panelName].HideMe();
            GameObject.Destroy(panelDic[panelName].gameObject);
            panelDic.Remove(panelName);
        }
    }

    /// <summary>
    /// 得到某一個(gè)已經(jīng)顯示的面板 方便外部使用
    /// </summary>
    public T GetPanel<T>(string name) where T:BasePanel
    {
        if (panelDic.ContainsKey(name))
            return panelDic[name] as T;
        return null;
    }

    /// <summary>
    /// 給控件添加自定義事件監(jiān)聽
    /// </summary>
    /// <param name="control">控件對(duì)象</param>
    /// <param name="type">事件類型</param>
    /// <param name="callBack">事件的響應(yīng)函數(shù)</param>
    public static void AddCustomEventListener(UIBehaviour control, EventTriggerType type, UnityAction<BaseEventData> callBack)
    {
        EventTrigger trigger = control.GetComponent<EventTrigger>();
        if (trigger == null)
            trigger = control.gameObject.AddComponent<EventTrigger>();

        EventTrigger.Entry entry = new EventTrigger.Entry();
        entry.eventID = type;
        entry.callback.AddListener(callBack);

        trigger.triggers.Add(entry);
    }

}

• 測(cè)試代碼

public class LoginPanel : BasePanel
{
    public void InitData() {
        Debug.Log("初始化信息！");
    }
    // Start is called before the first frame update
    void Start()
    {
        //GetControl<Button>("btnLogin").onClick.AddListener(()=> {
        //    Debug.Log("我被點(diǎn)擊了");
        //});

        //  GetControl<Button>("btnExit").onClick.AddListener(()=> {
        //      Debug.Log("我要退出了");
        //      this.gameObject.SetActive(false);
        //  });

        UIManager.AddCustomEventListener(GetControl<Button>("btnExit"), EventTriggerType.PointerEnter, (data) =>
        {
            Debug.Log("我要進(jìn)入了");
        });
        UIManager.AddCustomEventListener(GetControl<Button>("btnExit"), EventTriggerType.PointerExit, (data) =>
        {
            Debug.Log("我要退出了");
        });
    }
    protected override void OnClick(string btnName)
    {
        switch (btnName)
        {
            case "btnLogin":
                Debug.Log("我被點(diǎn)擊了");
                break;
            case "btnExit":
                Debug.Log("我要退出了");
                break;
            default:
                break;
        }
    }

    public override void ShowMe()
    {
       
        Debug.Log("我顯示出來了！");
    }
    public override void HideMe()
    {
        Debug.Log("我要隱藏了！");
    }
    // Update is called once per frame
    void Update()
    {
        
    }
}

public class UITest : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        UIManager.GetInstance().ShowPanel<LoginPanel>("LoginPanel", E_UI_Layer.Mid, showPanel);
    }
    void showPanel(LoginPanel loginPanel)
    {
        loginPanel.InitData();

     
    }
    
    // Update is called once per frame
    void Update()
    {

    }
}

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