我正在使用Unity 5.设置如下:
这是脚本:
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
public class ChangeButtonsText : MonoBehaviour {
public GameObject Menu;
private Transform[] transforms;
private List<string> texts;
private int numButtons;
private int menuIndex;
// Use this for initialization
void Start () {
texts = new List<string> ();
for (int i = 0; i < 10; i++) {
texts.Add("I am the button number " + i.ToString());
}
int numButtons = Menu.transform.childCount;
print ("1 numButtons = " + numButtons.ToString ());
transforms = new Transform[numButtons];
for (int i = 0; i < numButtons; ++i) {
transforms[i] = Menu.transform.GetChild(i);
}
print ("2 numButtons = " + numButtons.ToString ());
menuIndex = 0;
for (int i = 0; i < numButtons; i++) {
transforms[i].GetComponentInChildren<UnityEngine.UI.Text>().text = texts[menuIndex];
if((i < numButtons-1) && (menuIndex < texts.Count - 1)) menuIndex++;
}
print ("3 numButtons = " + numButtons.ToString ());
}
// Update is called once per frame
void Update () {
print ("4 numButtons = " + numButtons.ToString ());
if(Input.GetKeyDown(KeyCode.Q)) {
print ("5 numButtons = " + numButtons.ToString ());
if (menuIndex < texts.Count - 1) menuIndex++;
print (menuIndex.ToString());
int j = 0;
print ("6 numButtons = " + numButtons.ToString ());
print ("Going in!");
for (int i = 0; i < numButtons; i++) {
print ("I'm in!");
transforms[i].GetComponentInChildren<UnityEngine.UI.Text>().text = texts[menuIndex-j];
print ("Changed!");
j++;
}
}
}
}
关于numButtons的3次打印显示3.但是,第4次打印(Update()函数中的第一次打印输出0。 知道为什么会这样吗?
非常感谢。
答案 0 :(得分:4)
在Start()
方法中,您声明了一个名为numButtons
的新变量,隐藏了具有相同名称的实例成员。要修复它,只需删除之前的int
,然后它将分配成员而不是本地变量:
for (int i = 0; i < 10; i++) {
texts.Add("I am the button number " + i.ToString());
}
numButtons = Menu.transform.childCount; // no "int" here
print ("1 numButtons = " + numButtons.ToString ());