Add Image component to new gameobject

Question

I created a new game object:

GameObject newObject = new GameObject("ObjectName");
newObject.AddComponent<RectTransform>();
newObject.GetComponent<RectTransform>().sizeDelta = new Vector2(width, height);

I'm looking for a way to add an image (script) for color purposes. How can I do it?

Answer 1

This adds the Image component to your GameObject:

newObject.AddComponent<Image>();

More things has to be done in order for the Image component to show:

1.Create a Canvas. The includes creating the GameObject that will hold the Canvas then attach Canvas component to it. You also have to attach other important UI components such as CanvasScaler and GraphicRaycaster to the Canvas.

2.Create your Image GameObject with your new GameObject("ObjectName"); then call newObject.AddComponent<Image>(); to attach Image component to that GameObject.

3.Make that Image GameObject a child of the Canvas.

This is the whole process of creating a Canvas and an Image as the child:

void Start()
{
    //Create Canvas
    GameObject canvas = createCanvas(false);

    //Create your Image GameObject
    GameObject newObject = new GameObject("ObjectName");

    //Make the GameObject child of the Canvas
    newObject.transform.SetParent(canvas.transform);

    //Add Image Component to it(This will add RectTransform as-well)
    newObject.AddComponent<Image>();

    //Center Image to screen
    newObject.GetComponent<RectTransform>().anchoredPosition = Vector2.zero;
}



//Creates Hidden GameObject and attaches Canvas component to it
private GameObject createCanvas(bool hide)
{
    //Create Canvas GameObject
    GameObject tempCanvas = new GameObject("Canvas");
    if (hide)
    {
        tempCanvas.hideFlags = HideFlags.HideAndDontSave;
    }

    //Create and Add Canvas Component
    Canvas cnvs = tempCanvas.AddComponent<Canvas>();
    cnvs.renderMode = RenderMode.ScreenSpaceOverlay;
    cnvs.pixelPerfect = false;

    //Set Cavas sorting order to be above other Canvas sorting order
    cnvs.sortingOrder = 12;

    cnvs.targetDisplay = 0;

    addCanvasScaler(tempCanvas);
    addGraphicsRaycaster(tempCanvas);
    return tempCanvas;
}

//Adds CanvasScaler component to the Canvas GameObject 
private void addCanvasScaler(GameObject parentaCanvas)
{
    CanvasScaler cvsl = parentaCanvas.AddComponent<CanvasScaler>();
    cvsl.uiScaleMode = CanvasScaler.ScaleMode.ScaleWithScreenSize;
    cvsl.referenceResolution = new Vector2(800f, 600f);
    cvsl.matchWidthOrHeight = 0.5f;
    cvsl.screenMatchMode = CanvasScaler.ScreenMatchMode.MatchWidthOrHeight;
    cvsl.referencePixelsPerUnit = 100f;
}

//Adds GraphicRaycaster component to the Canvas GameObject 
private void addGraphicsRaycaster(GameObject parentaCanvas)
{
    GraphicRaycaster grcter = parentaCanvas.AddComponent<GraphicRaycaster>();
    grcter.ignoreReversedGraphics = true;
    grcter.blockingObjects = GraphicRaycaster.BlockingObjects.None;
}