通过代码使用锚点预设定位 UI 元素

Question

当我们在Unity中定位UI元素时，我们固定锚点预设的位置，以便将其正确地放置在画布上。

我们选择顶部、中间、底部、拉伸和蓝色点。

如果我在C#代码中创建UI元素，我该怎么做？

我制作

Texture2D textureWhite = new Texture2D(1, 1);
textureWhite.SetPixel(0, 0, Color.white);
textureWhite.Apply(); 

我该如何将左上角固定并与蓝色圆点一起修复？

- batuman

Answer 1

UI对象的RectTransform锚点（min、max）值和中心轴点值决定了UI蓝色点的位置。

如果按住Shift键并单击每个预设项，您可以看到下图中圈出的属性会发生变化。然后，您可以将每个变量复制并放入代码中。

这些属性可以通过脚本控制，例如 RectTransform.anchorMin、RectTransform.anchorMax 和 RectTransform.pivot。

不确定您提问中的Texture2D代码与此有何关系，但以下是设置每个预设项的函数：

//------------Top-------------------
void topLeft(GameObject uiObject)
{
    RectTransform uitransform = uiObject.GetComponent<RectTransform>();

    uitransform.anchorMin = new Vector2(0, 1);
    uitransform.anchorMax = new Vector2(0, 1);
    uitransform.pivot = new Vector2(0, 1);
}

void topMiddle(GameObject uiObject)
{
    RectTransform uitransform = uiObject.GetComponent<RectTransform>();

    uitransform.anchorMin = new Vector2(0.5f, 1);
    uitransform.anchorMax = new Vector2(0.5f, 1);
    uitransform.pivot = new Vector2(0.5f, 1);
}


void topRight(GameObject uiObject)
{
    RectTransform uitransform = uiObject.GetComponent<RectTransform>();

    uitransform.anchorMin = new Vector2(1, 1);
    uitransform.anchorMax = new Vector2(1, 1);
    uitransform.pivot = new Vector2(1, 1);
}

//------------Middle-------------------
void middleLeft(GameObject uiObject)
{
    RectTransform uitransform = uiObject.GetComponent<RectTransform>();

    uitransform.anchorMin = new Vector2(0, 0.5f);
    uitransform.anchorMax = new Vector2(0, 0.5f);
    uitransform.pivot = new Vector2(0, 0.5f);
}

void middle(GameObject uiObject)
{
    RectTransform uitransform = uiObject.GetComponent<RectTransform>();

    uitransform.anchorMin = new Vector2(0.5f, 0.5f);
    uitransform.anchorMax = new Vector2(0.5f, 0.5f);
    uitransform.pivot = new Vector2(0.5f, 0.5f);
}

void middleRight(GameObject uiObject)
{
    RectTransform uitransform = uiObject.GetComponent<RectTransform>();

    uitransform.anchorMin = new Vector2(1, 0.5f);
    uitransform.anchorMax = new Vector2(1, 0.5f);
    uitransform.pivot = new Vector2(1, 0.5f);
}

//------------Bottom-------------------
void bottomLeft(GameObject uiObject)
{
    RectTransform uitransform = uiObject.GetComponent<RectTransform>();

    uitransform.anchorMin = new Vector2(0, 0);
    uitransform.anchorMax = new Vector2(0, 0);
    uitransform.pivot = new Vector2(0, 0);
}

void bottomMiddle(GameObject uiObject)
{
    RectTransform uitransform = uiObject.GetComponent<RectTransform>();

    uitransform.anchorMin = new Vector2(0.5f, 0);
    uitransform.anchorMax = new Vector2(0.5f, 0);
    uitransform.pivot = new Vector2(0.5f, 0);
}

void bottomRight(GameObject uiObject)
{
    RectTransform uitransform = uiObject.GetComponent<RectTransform>();

    uitransform.anchorMin = new Vector2(1, 0);
    uitransform.anchorMax = new Vector2(1, 0);
    uitransform.pivot = new Vector2(1, 0);
}

- Programmer

Answer 2

您可以使用以下内容来控制锚点预设：

http://docs.unity3d.com/ScriptReference/RectTransform-anchorMin.html http://docs.unity3d.com/ScriptReference/RectTransform-anchorMax.html http://docs.unity3d.com/ScriptReference/RectTransform-pivot.html

查看此链接以获取更多详细信息：http://answers.unity3d.com/questions/1007886/how-to-set-the-new-unity-ui-rect-transform-anchor.html

- Bhaskar