StartCoroutine("MyMethod", parms) and MissingMethodException: Cannot find method MyMethod

Questions & Answers
1

MissingMethodException: Cannot find method MyMethod.
System.MonoType.InvokeMember (System.String name, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object target, System.Object args, System.Reflection.ParameterModifier modifiers, System.Globalization.CultureInfo culture, System.String namedParameters) (at /Applications/buildAgent/work/84669f285f6a667f/mcs/class/corlib/System/MonoType.cs:520)
UnityEngine.SetupCoroutine.InvokeMember (System.Object behaviour, System.String name, System.Object variable)
UnityEngine.MonoBehaviour:StartCoroutine(String, Object)

I’m having this problem when I call my Coroutine. If I remove the “object” parameter from the code, or change it to a float parameter (for example) it works fine. . . The strangest thing is that I’m using the exact same approach in another class and there this issue doesn’t happen Oo

Heres my code snippet:

	public void DoSomething(int someParam, bool temp = false, float tempSeconds = 5f)
	{
            actualParam = someParam;
		StopCoroutine("MyMethod");
		object[] parms = new object[2]{temp, tempSeconds};
		StartCoroutine("MyMethod", parms);		
	}

	IEnumerator MyMethod(object[] parms)
	{
	        // Do something
	        yield return new WaitForSeconds(0.1f);
	        // Do something else after 0.1
		if((bool)parms[0] == true)
		{
			yield return new WaitForSeconds((float)parms[1]);
                    // Do Something else
			DoSomething (actualParam*2);
		}
	}

*EDIT:
Sorry, I forgot to mention that:

  • I’m now caching the parameters outside the functions so I can get it working OK, but the issue still exists;
  • I’m using Unity PRO 4.1.5f.
2

You are searching for the coroutine using the string version of the argument. Why don’t you call it by passing in the method name directly which is more effecient:

// instead of:
StartCoroutine("MyMethod", parms);

// do this:
StartCoroutine(MyMethod(parms));