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我知道 Unity3D StartCoroutine 调用了一个与 StartCoroutine 在同一线程上运行的函数,但是被调用的函数何时返回给原始调用者?

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1 回答 1

23

我在互联网上查找了一个很好的 Unity3D 协程示例,但找不到完整的示例。UnityGems有一个很好的解释,但即使他们的例子也不完整。所以我写了我自己的例子。

这个:

using UnityEngine;
using System.Collections;
public class MainCamera: MonoBehaviour {
  void Start () {
    Debug.Log ("About to StartCoroutine");
    StartCoroutine(TestCoroutine());
    Debug.Log ("Back from StartCoroutine");
  }
  IEnumerator TestCoroutine(){
    Debug.Log ("about to yield return WaitForSeconds(1)");
    yield return new WaitForSeconds(1);
    Debug.Log ("Just waited 1 second");
    yield return new WaitForSeconds(1);
    Debug.Log ("Just waited another second");
    yield break;
    Debug.Log ("You'll never see this"); // produces a dead code warning
  }
}

产生这个输出:

About to StartCoroutine
about to yield return WaitForSeconds(1)
Back from StartCoroutine
Just waited 1 second
Just waited another second
于 2013-09-17T17:17:07.793 回答