StartCoroutine提供NullReferenceException

Question

我有2个课程。

public class GameManager : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        var a = new Routine();
    }
}

public class Routine : MonoBehaviour
{
    public Routine()
    {
        StartCoroutine(test());
    }
    IEnumerator test(){
        Debug.Log("MSG");
        yield return null;
    }
}

我将GameManager放在Camera上，运行游戏并获得NullReferenceException

NullReferenceException
UnityEngine.MonoBehaviour.StartCoroutine (System.Collections.IEnumerator routine) (at <d815b7efac424eeb8e053965cccb1f98>:0)
Routine..ctor () (at Assets/Routine.cs:9)
GameManager.Start () (at Assets/GameManager.cs:10)

那么这段代码怎么了？

Answer 1

传递给StartCorutine的枚举数不应为null，请在此处检查：https://github.com/Unity-Technologies/UnityCsReference/blob/master/Runtime/Export/Scripting/MonoBehaviour.bindings.cs#L88