获取 UI 文本元素的高度不正确 Unity
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【中文标题】获取 UI 文本元素的高度不正确 Unity【英文标题】：Get height of UI text element not correct Unity 【发布时间】：2018-09-05 14:43:25 【问题描述】：我有一些代码可以为文本元素设置自定义，然后自动调整高度，如下所示：
Title.SetTextContainerSize("autoH", 330);
public void SetTextContainerSize(string fit, float dimension = 0)
if (UIElement.GetComponent<ContentSizeFitter>() == null)
UISizeFitterComponent = UIElement.AddComponent(typeof(ContentSizeFitter)) as ContentSizeFitter;
if (fit == "autoWH")
UISizeFitterComponent.horizontalFit = ContentSizeFitter.FitMode.PreferredSize;
UISizeFitterComponent.verticalFit = ContentSizeFitter.FitMode.PreferredSize;
base.SetDimensions( RectOptions.sizeDelta);
else if (fit == "autoW")
UISizeFitterComponent.horizontalFit = ContentSizeFitter.FitMode.PreferredSize;
base.SetDimensions( new Vector2(RectOptions.rect.width, dimension));
else if (fit == "autoH")
//here is a problem..
UISizeFitterComponent.verticalFit = ContentSizeFitter.FitMode.PreferredSize;
Canvas.ForceUpdateCanvases();
Debug.Log(new Vector2(dimension, RectOptions.rect.height));
base.SetDimensions( new Vector2(dimension, RectOptions.rect.height));
编辑添加了设置尺寸功能
public void SetDimensions(Vector2 dimensions)
RectOptions.sizeDelta = dimensions;
Dimensions = dimensions; //this just sets the value of a property.
但是当我调用函数来更新文本时，我从Debug.Log() 得到以下结果，它说宽度 = 330，高度是 2077。在这种情况下，宽度是正确的，但高度甚至不接近。
在此处查看实际元素及其正确高度的屏幕截图。
编辑2我的unity版本是2018.1.3f1
更新元素的实际高度时我做错了什么？
如果有完全其他的方法可以做到这一点，如果需要的话，我也愿意完全重写当前函数:)
如果有不清楚的地方请告诉我，以便我澄清！
编辑3我决定添加使用该函数的类的完整代码和调用相应函数的代码，可能有问题导致错误：
这是调用问题函数的代码：
var Title = new EasyText(new Vector2(390, -20), Vector2.zero, Data.title, 30, _color: new Color(0,0,0,1));
Title.SetTextContainerSize("autoH", 330);
Main.MainCanvas.Add(Title);
var titleBottom = (Title.Dimensions.y);
Debug.Log(titleBottom);
这是上面代码调用的类：
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using System.Collections.Generic;
namespace Easy.UI
public static class EasyUISettings
public struct AnchorPoints
public static readonly Vector2 TopLeft = new Vector2(0, 1);
public static readonly Vector2 Center = new Vector2(0.5f, 0.5f);
public static readonly Vector2 CenterLeft = new Vector2(0, 0.5f);
public static readonly Vector2 CenterRight = new Vector2(1, 0.5f);
public static readonly Vector2 TopCenter = new Vector2(0.5f, 1);
public static readonly Vector2 BottomCenter = new Vector2(0.5f, 0);
public struct CoordinateReference
private CoordinateReference(int minX, int maxX, int minY, int maxY)
AnchorMin = new Vector2(minX, minY);
AnchorMax = new Vector2(maxX, maxY);
public Vector2 AnchorMin get; set;
public Vector2 AnchorMax get; set;
public static readonly CoordinateReference TopLeft = new CoordinateReference(0, 0, 1, 1);
public static readonly CoordinateReference TopRight = new CoordinateReference(1, 1, 1, 1);
public static readonly CoordinateReference BottomLeft = new CoordinateReference(0, 0, 0, 0);
public static readonly CoordinateReference BottomRight = new CoordinateReference(1, 1, 0, 0);
public struct TextAlignment
public static readonly TextAnchor TopLeft = TextAnchor.UpperLeft;
public static readonly TextAnchor TopRight = TextAnchor.UpperRight;
public static readonly TextAnchor TopCenter = TextAnchor.UpperCenter;
public static readonly TextAnchor CenterLeft = TextAnchor.MiddleLeft;
public static readonly TextAnchor CenterRight = TextAnchor.MiddleRight;
public static readonly TextAnchor CenterCenter = TextAnchor.MiddleCenter;
public static readonly TextAnchor BottomLeft = TextAnchor.LowerLeft;
public static readonly TextAnchor BottomCenter = TextAnchor.LowerCenter;
public static readonly TextAnchor BottomRight = TextAnchor.LowerRight;
public static class EasyUIHelpers
public static void DestroyUIElement(EasyUIELementFoundation element)
element.DestroyUIElement();
element = null;
public class EasyCanvas
private GameObject CanvasObject, Events;
private RectTransform Rect;
private Canvas CanvasScript;
private CanvasScaler Scaler;
private GraphicRaycaster Raycaster;
private StandaloneInputModule Inputs;
private List<EasyUIELementFoundation> CanvasElements;
public EasyCanvas()
CanvasElements = new List<EasyUIELementFoundation>();
CanvasObject = new GameObject();
CanvasObject.name = "EasyCanvas";
Rect = CanvasObject.AddComponent(typeof(RectTransform)) as RectTransform;
CanvasScript = CanvasObject.AddComponent(typeof(Canvas)) as Canvas;
Scaler = CanvasObject.AddComponent(typeof(CanvasScaler)) as CanvasScaler;
Raycaster = CanvasObject.AddComponent(typeof(GraphicRaycaster)) as GraphicRaycaster;
CanvasScript.pixelPerfect = true;
Events = new GameObject();
Events.name = "EasyEventsHandler";
Events.AddComponent(typeof(EventSystem));
Inputs = Events.AddComponent(typeof(StandaloneInputModule)) as StandaloneInputModule;
public EasyCanvas(string _type, Camera c) : this()
CanvasScript.worldCamera = c;
CanvasScript.planeDistance = 0.15f;
if (_type.Equals("Camera"))
CanvasScript.renderMode = RenderMode.ScreenSpaceCamera;
Scaler.uiScaleMode = CanvasScaler.ScaleMode.ScaleWithScreenSize;
Scaler.referenceResolution = new Vector2(1920, 1080);
Scaler.screenMatchMode = CanvasScaler.ScreenMatchMode.MatchWidthOrHeight;
else if(_type.Equals("World"))
CanvasScript.renderMode = RenderMode.WorldSpace;
public void Add(EasyUIELementFoundation element)
element.AddToCanvas(CanvasScript);
CanvasElements.Add(element);
public void EmptyCanvas()
for (int i = CanvasElements.Count - 1; i >= 0 ; i--)
CanvasElements[i].DestroyUIElement();
CanvasElements[i] = null;
CanvasElements.RemoveAt(i);
public Vector2 GetCanvasDimensions()
return Rect.sizeDelta;
public abstract class EasyUIELementFoundation
protected GameObject UIElement;
protected RectTransform RectOptions;
public Vector2 Position get; private set;
public Vector2 Dimensions get; private set;
public Vector2 PivotPoint get; private set;
public EasyUISettings.CoordinateReference ReferenceCoordinates get; private set;
protected EasyUIELementFoundation(Vector2 _position, Vector2 _dimensions)
UIElement = new GameObject();
RectOptions = UIElement.AddComponent(typeof(RectTransform)) as RectTransform;
SetPivotReference(EasyUISettings.AnchorPoints.TopLeft);
SetCoordinateReference(EasyUISettings.CoordinateReference.TopLeft);
SetPosition(_position);
SetDimensions(_dimensions);
public void SetCoordinateReference(EasyUISettings.CoordinateReference reference)
RectOptions.anchorMin = reference.AnchorMin;
RectOptions.anchorMax = reference.AnchorMax;
ReferenceCoordinates = reference;
public void SetPivotReference(Vector2 reference)
RectOptions.pivot = reference;
PivotPoint = reference;
public void SetPosition(Vector2 pos)
RectOptions.anchoredPosition = pos;
Position = pos;
public void SetDimensions(Vector2 dimensions)
RectOptions.sizeDelta = dimensions;
Dimensions = dimensions;
public void AddToCanvas(Canvas c)
UIElement.transform.SetParent(c.transform, false);
public void DestroyUIElement()
Object.Destroy(UIElement);
public class EasyText : EasyUIELementFoundation
protected ContentSizeFitter UISizeFitterComponent;
protected Text UITextComponent;
public string Text get; private set;
public Color TextColor get; private set;
public Font TextFont get; private set;
public int FontSize get; private set;
public TextAnchor TextAlignment get; private set;
public EasyText(Vector2 _position = default(Vector2), Vector2 _dimensions = default(Vector2), string _text = "Base Text", int _fontSize = 15, Font _font = null, Color _color = default(Color), TextAnchor _align = default(TextAnchor)) : base(_position, _dimensions)
UITextComponent = UIElement.AddComponent(typeof(Text)) as Text;
SetText(_text);
SetTextSize(_fontSize);
SetFont(_font);
SetTextColor(_color);
SetTextAlignment(_align);
public void SetText(string text)
Text = text;
UITextComponent.text = Text;
public void SetTextSize(int size)
FontSize = size;
UITextComponent.fontSize = size;
public void SetFont(UnityEngine.Object font)
var ValidFont = (Font)font;
if(ValidFont != null)
TextFont = ValidFont;
UITextComponent.font = TextFont;
else
TextFont = Resources.GetBuiltinResource(typeof(Font), "Arial.ttf") as Font;
UITextComponent.font = TextFont;
Debug.LogWarning("No font was specified using default font");
public void SetTextColor(Color color)
TextColor = color;
UITextComponent.color = TextColor;
public void SetTextAlignment(TextAnchor alignment)
TextAlignment = alignment;
UITextComponent.alignment = alignment;
public void SetTextContainerSize(string fit, float dimension = 0)
if (UIElement.GetComponent<ContentSizeFitter>() == null)
UISizeFitterComponent = UIElement.AddComponent(typeof(ContentSizeFitter)) as ContentSizeFitter;
if (fit == "autoWH")
UISizeFitterComponent.horizontalFit = ContentSizeFitter.FitMode.PreferredSize;
UISizeFitterComponent.verticalFit = ContentSizeFitter.FitMode.PreferredSize;
base.SetDimensions( RectOptions.sizeDelta);
else if (fit == "autoW")
UISizeFitterComponent.horizontalFit = ContentSizeFitter.FitMode.PreferredSize;
UISizeFitterComponent.verticalFit = ContentSizeFitter.FitMode.Unconstrained;
base.SetDimensions( new Vector2(RectOptions.rect.width, dimension));
else if (fit == "autoH")
UISizeFitterComponent.horizontalFit = ContentSizeFitter.FitMode.Unconstrained;
UISizeFitterComponent.verticalFit = ContentSizeFitter.FitMode.PreferredSize;
// THIS NEEDS A FIX OMG
// LayoutRebuilder.ForceRebuildLayoutImmediate(RectOptions);
Canvas.ForceUpdateCanvases();
UISizeFitterComponent.SetLayoutVertical();
base.SetDimensions( new Vector2(dimension, RectOptions.rect.height));
public void RemoveContentSizeFitter()
var component = UIElement.GetComponent(typeof(ContentSizeFitter)) as ContentSizeFitter;
if(component != null)
Object.Destroy(component);
【问题讨论】：
您是否尝试过将 UISizeFitterComponent.horizontalFit 设置为不受约束？它可能仍设置为 PreferredSize 我可以问一下为什么这与获得正确的高度有关吗？ 没什么，没看懂代码。但是为了诊断问题，您可以发布 SetDimensions 方法吗？ 添加了 SetDimensions 函数 【参考方案1】：在花费数小时试图找到解决方案后，我终于找到了它..
这实际上是一个非常愚蠢的错误。
这里有一个解释：
我通过以下方式启动了我的自定义 UIText 类：
var Title = new EasyText(new Vector2(390, -20), Vector2.zero, Data.title, 30, _color: new Color(0,0,0,1));
注意到文本元素尺寸的 Vector.zero 了吗？是的，这会引起一些问题。
因为我在刚刚创建的标题元素上调用了这个：
Title.SetTextContainerSize("autoH", 330);
这将调用我的尺寸调整器更新函数，如下所示：
public void SetTextContainerSize(string fit, float dimension = 0)
if (UIElement.GetComponent<ContentSizeFitter>() == null)
UISizeFitterComponent = UIElement.AddComponent(typeof(ContentSizeFitter)) as ContentSizeFitter;
if (fit == "autoWH")
UISizeFitterComponent.horizontalFit = ContentSizeFitter.FitMode.PreferredSize;
UISizeFitterComponent.verticalFit = ContentSizeFitter.FitMode.PreferredSize;
base.SetDimensions( RectOptions.sizeDelta);
else if (fit == "autoW")
UISizeFitterComponent.horizontalFit = ContentSizeFitter.FitMode.PreferredSize;
UISizeFitterComponent.verticalFit = ContentSizeFitter.FitMode.Unconstrained;
Canvas.ForceUpdateCanvases();
base.SetDimensions( new Vector2(RectOptions.rect.width, dimension));
else if (fit == "autoH")
UISizeFitterComponent.horizontalFit = ContentSizeFitter.FitMode.Unconstrained;
UISizeFitterComponent.verticalFit = ContentSizeFitter.FitMode.PreferredSize;
Canvas.ForceUpdateCanvases();
base.SetDimensions( new Vector2(dimension, RectOptions.rect.height));
在 fit 值是 autoW 或 autoH 的情况下，程序将添加内容大小 fitter 但由于初始化，元素的大小为 0。内容大小调整器会将元素扩展至极限，因为其他大小仅为 0。 然后我更新了画布，但这没有做任何事情，因为元素的宽度或高度为 0。在取回值时导致大量数字。那么如何解决这个问题呢？
在添加内容大小调整器之前，只需确保元素具有一定的宽度或高度，如下所示：
public void SetTextContainerSize(string fit, float dimension = 0)
if (UIElement.GetComponent<ContentSizeFitter>() == null)
UISizeFitterComponent = UIElement.AddComponent(typeof(ContentSizeFitter)) as ContentSizeFitter;
if (fit == "autoWH")
UISizeFitterComponent.horizontalFit = ContentSizeFitter.FitMode.PreferredSize;
UISizeFitterComponent.verticalFit = ContentSizeFitter.FitMode.PreferredSize;
else if (fit == "autoW")
base.SetDimensions(new Vector2(dimension, dimension));
UISizeFitterComponent.horizontalFit = ContentSizeFitter.FitMode.PreferredSize;
UISizeFitterComponent.verticalFit = ContentSizeFitter.FitMode.Unconstrained;
Canvas.ForceUpdateCanvases();
base.SetDimensions( new Vector2(RectOptions.rect.width, dimension));
else if (fit == "autoH")
base.SetDimensions(new Vector2(dimension, dimension));
UISizeFitterComponent.horizontalFit = ContentSizeFitter.FitMode.Unconstrained;
UISizeFitterComponent.verticalFit = ContentSizeFitter.FitMode.PreferredSize;
Canvas.ForceUpdateCanvases();
base.SetDimensions( new Vector2(dimension, RectOptions.rect.height));
这解决了我的问题。我真的希望这对将来的任何人都有帮助！ 如果您有任何不明白的地方，请发表评论，以便我澄清我的答案:)
【讨论】：
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