CODEWITHSUNDEEP
c#unity-game-engineunity3d-gui
Yecats
Yecats

Reputation: 1815

How do you get the image component of a nested game object in a UI prefab?

I am trying to alter the sprite of a nested image object within a dialog UI (Unity 4.6's UI) that I have saved as a prefab. I am able to load the prefab, but when I try to do:

Image[] imageComponents = conversationDialogNoChoice.GetComponentsInChildren<Image>();

I get zero items back. The hierarchy is:

enter image description here

The full code is:

        private GameObject conversationDialogNoChoice;
public void StartConversation(Conversation conversation)
    {
        if (!talking)
        {
            //StartCoroutine(DisplayConversation(conversation));
            StartCoroutine(DisplayConversation(conversation));
        }
    }

    IEnumerator DisplayConversationNewUI(Conversation conversation)
    {
        conversationDialogNoChoice = (GameObject)Resources.Load("Prefabs/ConversationDialogNoChoices");
        conversationDialogChoice = (GameObject)Resources.Load("Prefabs/ConversationDialogChoices");
        ConversationTest = (GameObject)Resources.Load("Prefabs/ConversationTest");
        bool nextPushed;

        foreach (var conversationLine in conversation.ConversationLines)
        {
            nextPushed = false;
            Image[] imageComponents = conversationDialogNoChoice.GetComponentsInChildren<Image>();
            Debug.Log(imageComponents.Length);
            //imageComponents[].sprite = currentCovnersationLine.DisplayPicture;

            Instantiate(conversationDialogNoChoice);

            while (!nextPushed)
            {
                if (Input.GetKeyDown(KeyCode.Return))
                {
                    nextPushed = true;
                }
                yield return null;
            }
        }

        talking = false; //talking is complete
        if (conversation.Repeatable == false)
        {
            conversation.CanOccur = false;
        }
        yield return null;


    }

Upvotes: 0

Views: 1640

Answers (3)

Anas iqbal
Anas iqbal

Reputation: 1044

In addition to what "Max Yankov" said.

Image in GetComponentsInChildren<Image>() refers to a script or component on the GameObject not the GameObject itself.

So if you need to find all Components of Image you need to add a Script or Component with name Image on your child GameObject. Naming the GameObject "Image" is not necessary.

Upvotes: 0

Max Yankov
Max Yankov

Reputation: 13297

Are you sure that your Image game object is active? GetComponentsInChildren has includeInactive parameter, and it's set to false by default.

Upvotes: 1

Diego Alares
Diego Alares

Reputation: 95

Maybe you should consider including "Panel" in your resource loading path.

Upvotes: 0

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