使用yield WaitForSeconds [英] Using yield WaitForSeconds

问题描述

我可能正在问一个非常明显的问题，而我却忽略了一个问题，但是我试图在它做某事之前先创建一个暂停.

I might be asking something that's extremely obvious and I have overlooked something, but I'm trying to create a pause before it does something.

我已经看到它在网上很多地方都被使用-

I have seen this being used in many places online -

yield WaitForSeconds(2);

但是我得到的语法错误是

However I get a syntax error of,

错误CS1528:预期；或=(无法指定构造函数参数声明中)(CS1528)(Assembly-CSharp)

"Error CS1528: Expected ; or = (cannot specify constructor arguments in declaration) (CS1528) (Assembly-CSharp)

这让我感到困惑，因为我不太确定关键字 yield 的真正含义或作用，而且在 WaitForSeconds 是其上的类的前提下在构造函数中(而不是在声明中)"2"表示任何帮助.谢谢！

Which confuses me as im not really sure what yield as a keyword really means or does, and im under the assumption that WaitForSeconds is a class of its on with the "2" being in the constructor (not in a declaration) any help would be appreciated. thanks!

推荐答案

您要使用的是IEnumerator.

What you want is t use an IEnumerator.

IEnumerator Example() 
{
    print(Time.time);
    yield return new WaitForSeconds(5);
    print(Time.time);
}

然后您会问:我怎么称呼它?

Then you will ask: How do I call this?

void Start() 
{
    print("Starting " + Time.time);
    StartCoroutine(WaitAndPrint(2.0F));
    print("Before WaitAndPrint Finishes " + Time.time);
}

IEnumerator WaitAndPrint(float waitTime) 
{
    yield return new WaitForSeconds(waitTime);
    print("WaitAndPrint " + Time.time);
}

我刚刚阅读了评论上发布的链接 Jon Skeet，我也推荐它，它非常有价值信息.

I just read the link Jon Skeet posted on the comments, I too recommend it, it has pretty valuable information.

这篇关于使用yield WaitForSeconds的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！