好的问题是,无论何时我想使用UI文本,我需要将我的int值转换为字符串,所以我提出了一个方法,变量,并给它它的Int变量的值,因此它可以被UI文本对象使用。我将Unity从5.3升级到5.6,现在我得到空引用异常
它看起来像这样:
void setText(Text textVar, int valueVar)
{
textVar.text = valueVar.ToString();
}
很简单吧?以及..即时得到错误:
NullReferenceException: Object reference not set to an instance of an object
UnityStandardAssets.Characters.FirstPerson.FirstPersonController.setText (UnityEngine.UI.Text textVar, Int32 valueVar) (at Assets/Standard Assets/Characters/FirstPersonCharacter/Scripts/FirstPersonController.cs:1617)
UnityStandardAssets.Characters.FirstPerson.FirstPersonController.generateRandomStat (Int32 stat) (at Assets/Standard Assets/Characters/FirstPersonCharacter/Scripts/FirstPersonController.cs:318)
UnityStandardAssets.Characters.FirstPerson.FirstPersonController.charCram() (at Assets/Standard Assets/Characters/FirstPersonCharacter/Scripts/FirstPersonController.cs:221)
UnityStandardAssets.Characters.FirstPerson.FirstPersonController.Start() (at Assets/Standard Assets/Characters/FirstPersonCharacter/Scripts/FirstPersonController.cs:1715)
所以看起来在我创建随机值的方法产生的问题,但就像我说这个很好用上班前,这里是对统计的代码片段发生器:
//method to generate a random stat from 3 to 18
public void generateRandomStat(int stat)
{
int rng = Random.Range(3, 18);
switch (stat)
{
case 0:
strength = rng;
setText(strengthText, strength);
print(strength);
break;
case 1:
dexterity = rng;
setText(dexterityText, dexterity);
print(dexterity);
break;
case 2:
intelligence = rng;
setText(intelligenceText, intelligence);
print(intelligence);
break;
case 3:
wisdom = rng;
setText(wisdomText, wisdom);
print(wisdom);
break;
case 4:
constitution = rng;
setText(constitutionText, constitution);
print(constitution);
break;
case 5:
charisma = rng;
setText(charismaText, charisma);
print(charisma);
break;
case 6:
luck = rng;
setText(luckText, luck);
print(luck);
break;
case 7:
willpower = rng;
setText(willpowerText, willpower);
print(willpower);
break;
}
}
打印()在每种情况下的端部被用于第一测试在控制台中使用的UI元素,每当我编译游戏它不即使在控制台打印统计之前。
有人问我是否已经赋值给文本变量,没有我还没有,我所做的就是它们初始化如下:
public Text strengthText;
public Text dexterityText;
等等,做我需要让他们=要的东西避免错误?
你确定你确实传入了一个'Text'类的实例,而不仅仅是null? – Serlite
'textVar'被传递为null,您需要向后跟随代码并查看该值来自哪里。那就是问题所在,那就是你需要向我们展示的代码。 –
是的,我进一步检查了调试窗口,似乎空值来自我生成的值生病编辑帖子! –