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Question by UaSirideain · May 09, 2017 at 06:13 AM · nullreferenceexceptionfunction callreturn value

Return value inexplicably becomes null

The following function gives me null whenever I call it.

 private Avatar
 GetAvatar()
 {
     List<Avatar> party = GameObject.FindObjectOfType<Party> ().GetAvatarsInParty ();
 
     foreach (Avatar avatar in party)
     {
         if (avatar.name.Contains ("AvatarName"))
         {
             print(avatar);
             return avatar;
         }
     }
     return null;
 }

It's definitely $$anonymous$$tting return avatar, and print(avatar) is successfully printing the name of the FieldAvatar I want.

The only explanation is that I'm an idiot and that I don't understand somet$$anonymous$$ng basic about how t$$anonymous$$s is meant to work.

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avatar image adamwolanski · May 09, 2017 at 11:16 AM 0
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avatar image ThePunisher · May 10, 2017 at 11:44 PM 0
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avatar image Bunny83 ThePunisher · May 11, 2017 at 01:25 PM 0
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avatar image ThePunisher Bunny83 · May 11, 2017 at 09:09 PM 0
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Answer by Bunny83 · May 09, 2017 at 08:12 PM

There are generally two cases i can imagine when seeing that portion of code:

  • Either that "Avatar" object that you return is derived from MonoBehaviour (or ScriptableObject) and got destroyed or wrongly initialized.

  • You might call that method several times and the one that matters returned null because the list might have been empty at that point.

Both cases can only be verified by you as the necessary information is missing in your question.

If t$$anonymous$$s answer doesn't solve your problem, make sure you add more details to your question. T$$anonymous$$ngs of interest would be:

  • What is that Avatar you are returning? Most likely a class. Is it derived from somet$$anonymous$$ng?

  • Where / when is the list (that is returned by "GetAvatarsInParty" ) inside your "Party" class initialized?

  • Try adding another Debug.Log / print after your for loop to see when no avatar was found.

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avatar image UaSirideain · May 10, 2017 at 09:28 AM 0
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avatar image Bunny83 UaSirideain · May 10, 2017 at 11:23 AM 0
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avatar image ThePunisher UaSirideain · May 10, 2017 at 11:51 PM 0
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