NUGI学习笔记--实时获取并操作UIkeynavigation选中的object

来源：互联网发布：js同源是什么意思编辑：程序博客网时间：2024/06/06 00:57

功能介绍：
如图，全键盘控制，UIkeynavigation选择rounds，coins，music这些button，回车键选择相应的编辑框，按上下键修改label的数值，再按回车键退出选择的编辑框

先看看UIkeynavigation的源码：

    protected virtual void OnClick ()    {        if (NGUITools.GetActive (this) && NGUITools.GetActive (onClick))         {            UICamera.selectedObject = onClick;            EditActiveValue.isActive = islabel();            editActiveValue.activeObject = onClick;        }    }

onClick就是我们要获取的object

接下来新建脚本EditActiveValue.cs，并修改源码，将onClick通过引用传递到新建的脚本当中

EditActiveValue.cs代码如下：

using UnityEngine;using System.Collections;public class EditActiveValue : MonoBehaviour {    //要编辑的object    public GameObject activeObject = null;    //object上的UIlabel组件    private UILabel label;    //只有当选中编辑框的时候，才能在update（）中修改label中的text    public static bool isActive = false;    // Update is called once per frame    void Update ()     {        if(isActive)            Edit( ref activeObject );    }    public void Edit(ref GameObject activeObject)    {        if(activeObject == null ) return;        if(activeObject.tag.CompareTo("label") == 0)        {            label = activeObject.GetComponent<UILabel>();            if (Input.GetKeyDown (KeyCode.DownArrow))             {                int temp;                int.TryParse(label.text, out temp);                temp--;                label.text = temp.ToString();            }            if (Input.GetKeyDown (KeyCode.UpArrow))             {                int temp;                int.TryParse(label.text, out temp);                temp++;                label.text = temp.ToString();            }        }    }}

为了不修改源码，新建一个脚本NewUIkeynavigation.cs，继承UIkeynavigation类，代码如下：

using UnityEngine;using System.Collections;public class NewUIKeyNavigation : UIKeyNavigation {    public EditActiveValue editActiveValue;    void Start()    {        editActiveValue = GameObject.Find ("EditActiveValue").GetComponent<EditActiveValue> ();    }    protected override void OnClick ()    {        if (NGUITools.GetActive (this) && NGUITools.GetActive (onClick))         {            UICamera.selectedObject = onClick;            EditActiveValue.isActive = islabel();            editActiveValue.activeObject = onClick;        }    }    bool islabel()    {        if(onClick.GetComponent<UILabel>() != null)        {            return true;        }        else        {            return false;        }    }}

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