1 前言
本文将实现 cvs 表格数据与 UI Toolkit 元素的动态绑定。
如果读者对 UI Toolkit 不是太了解，可以参考以下内容。
本文完整资源见→UI Toolkit数据动态绑定。
2 数据动态绑定案例
2.1 UI 搭建
样式和 UI 层级结构如下。
MainLayout.xml
<ui:UXML xmlns:ui="UnityEngine.UIElements" xmlns:uie="UnityEditor.UIElements" xsi="http://www.w3.org/2001/XMLSchema-instance" engine="UnityEngine.UIElements" editor="UnityEditor.UIElements" noNamespaceSchemaLocation="../../../../UIElementsSchema/UIElements.xsd" editor-extension-mode="False"> <Style src="project://database/Assets/Role/View/StyleSheets/RoleStyle.uss?fileID=7433441132597879392&guid=d93d80f270ec5014c90e97cc8c404d1f&type=3#RoleStyle" /> <ui:VisualElement name="Background" style="flex-grow: 1; background-image: url('project://database/Assets/Role/Img/Background_Sky.png?fileID=2800000&guid=02ebb0e77ccd96143911134d6e39e1db&type=3#Background_Sky'); padding-left: 4%; padding-right: 4%; padding-top: 4%; padding-bottom: 4%; -unity-background-scale-mode: scale-and-crop;"> <ui:Label text="Game Role" display-tooltip-when-elided="true" name="TitleLab" style="height: 10%; margin-bottom: 1%; -unity-text-align: middle-left; font-size: 100px; -unity-font-style: italic; color: rgb(34, 34, 34);" /> <ui:VisualElement name="Body" style="flex-grow: 1; flex-direction: row;"> <ui:VisualElement name="RoleTemplate" style="flex-basis: 25%; margin-left: 10px; margin-right: 10px; margin-top: 10px; margin-bottom: 10px; background-color: rgba(0, 0, 0, 0.2); border-top-left-radius: 10px; border-bottom-left-radius: 10px; border-top-right-radius: 10px; border-bottom-right-radius: 10px;"> <ui:VisualElement name="Image" style="flex-basis: 50%; margin-left: 5%; margin-right: 5%; margin-top: 5%; margin-bottom: 0; background-color: rgba(0, 0, 0, 0.39); border-top-left-radius: 10px; border-top-right-radius: 10px; background-image: url('project://database/Assets/Role/Img/Avatar_1.png?fileID=2800000&guid=95b3aee3bc9bae64f8b70aba356b50b1&type=3#Avatar_1'); -unity-background-scale-mode: scale-and-crop;" /> <ui:Label text="角色" display-tooltip-when-elided="true" name="NameLab" style="margin-left: 3%; margin-right: 3%; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0; background-color: rgb(255, 96, 96); border-top-left-radius: 10px; border-bottom-left-radius: 10px; border-top-right-radius: 10px; border-bottom-right-radius: 10px; flex-shrink: 1; font-size: 35px; -unity-text-align: middle-center; color: rgb(255, 254, 254);" /> <ui:VisualElement name="Properties" style="flex-grow: 1; margin-left: 5%; margin-right: 5%; margin-top: 0; margin-bottom: 5%; background-color: rgba(0, 0, 0, 0.39); border-bottom-right-radius: 10px; border-bottom-left-radius: 10px;"> <ui:VisualElement name="Property" style="flex-direction: row; margin-left: 5px; margin-right: 5px; margin-top: 5px; margin-bottom: 5px; flex-grow: 0; justify-content: center;"> <ui:Label text="等级" display-tooltip-when-elided="true" name="Name" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(185, 251, 192); border-top-left-radius: 10px; border-bottom-left-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> <ui:Label text="1" display-tooltip-when-elided="true" name="Value" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(255, 200, 200); border-top-right-radius: 10px; border-bottom-right-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> </ui:VisualElement> <ui:VisualElement name="Property" style="flex-direction: row; margin-left: 5px; margin-right: 5px; margin-top: 5px; margin-bottom: 5px; flex-grow: 0; justify-content: center;"> <ui:Label text="行动力" display-tooltip-when-elided="true" name="Name" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(185, 251, 192); border-top-left-radius: 10px; border-bottom-left-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> <ui:Label text="1" display-tooltip-when-elided="true" name="Value" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(255, 200, 200); border-top-right-radius: 10px; border-bottom-right-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> </ui:VisualElement> <ui:VisualElement name="Property" style="flex-direction: row; margin-left: 5px; margin-right: 5px; margin-top: 5px; margin-bottom: 5px; flex-grow: 0; justify-content: center;"> <ui:Label text="最大HP" display-tooltip-when-elided="true" name="Name" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(185, 251, 192); border-top-left-radius: 10px; border-bottom-left-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> <ui:Label text="1" display-tooltip-when-elided="true" name="Value" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(255, 200, 200); border-top-right-radius: 10px; border-bottom-right-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> </ui:VisualElement> <ui:VisualElement name="Property" style="flex-direction: row; margin-left: 5px; margin-right: 5px; margin-top: 5px; margin-bottom: 5px; flex-grow: 0; justify-content: center;"> <ui:Label text="最大MP" display-tooltip-when-elided="true" name="Name" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(185, 251, 192); border-top-left-radius: 10px; border-bottom-left-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> <ui:Label text="1" display-tooltip-when-elided="true" name="Value" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(255, 200, 200); border-top-right-radius: 10px; border-bottom-right-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> </ui:VisualElement> <ui:VisualElement name="Property" style="flex-direction: row; margin-left: 5px; margin-right: 5px; margin-top: 5px; margin-bottom: 5px; flex-grow: 0; justify-content: center;"> <ui:Label text="攻击力" display-tooltip-when-elided="true" name="Name" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(185, 251, 192); border-top-left-radius: 10px; border-bottom-left-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> <ui:Label text="1" display-tooltip-when-elided="true" name="Value" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(255, 200, 200); border-top-right-radius: 10px; border-bottom-right-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> </ui:VisualElement> <ui:VisualElement name="Property" style="flex-direction: row; margin-left: 5px; margin-right: 5px; margin-top: 5px; margin-bottom: 5px; flex-grow: 0; justify-content: center;"> <ui:Label text="防御力" display-tooltip-when-elided="true" name="Name" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(185, 251, 192); border-top-left-radius: 10px; border-bottom-left-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> <ui:Label text="1" display-tooltip-when-elided="true" name="Value" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(255, 200, 200); border-top-right-radius: 10px; border-bottom-right-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> </ui:VisualElement> </ui:VisualElement> </ui:VisualElement> </ui:VisualElement> </ui:VisualElement> </ui:UXML> RoleStyle.uss
#RoleTemplate:hover { transition-duration: 0.1s; translate: 0 -20px; border-left-width: 5px; border-right-width: 5px; border-top-width: 5px; border-bottom-width: 5px; border-left-color: rgb(248, 242, 242); border-right-color: rgb(248, 242, 242); border-top-color: rgb(248, 242, 242); border-bottom-color: rgb(248, 242, 242); } #Property Label { font-size: 25px; color: rgba(0, 0, 0, 255); -unity-text-align: middle-center; -unity-font-style: bold; } 显示效果如下。
2.2 创建模板
在 Hierarchy 窗口选中 RoleTemplate 元素，右键弹出菜单，选择 Create Template，选择 Resources 目录下保存 RoleTemplate.uxml，修改 Grow 为 1。
RoleTemplate.xml
<ui:UXML xmlns:ui="UnityEngine.UIElements" xmlns:uie="UnityEditor.UIElements" editor-extension-mode="False"> <ui:VisualElement name="RoleTemplate" style="flex-basis: 25%; margin-left: 10px; margin-right: 10px; margin-top: 10px; margin-bottom: 10px; background-color: rgba(0, 0, 0, 0.2); border-top-left-radius: 10px; border-bottom-left-radius: 10px; border-top-right-radius: 10px; border-bottom-right-radius: 10px; flex-grow: 1;"> <ui:VisualElement name="Image" style="flex-basis: 50%; margin-left: 5%; margin-right: 5%; margin-top: 5%; margin-bottom: 0; background-color: rgba(0, 0, 0, 0.39); border-top-left-radius: 10px; border-top-right-radius: 10px; background-image: url('project://database/Assets/Role/Img/Avatar_1.png?fileID=2800000&guid=95b3aee3bc9bae64f8b70aba356b50b1&type=3#Avatar_1'); -unity-background-scale-mode: scale-and-crop;" /> <ui:Label text="角色" display-tooltip-when-elided="true" name="NameLab" style="margin-left: 3%; margin-right: 3%; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0; background-color: rgb(255, 96, 96); border-top-left-radius: 10px; border-bottom-left-radius: 10px; border-top-right-radius: 10px; border-bottom-right-radius: 10px; flex-shrink: 1; font-size: 35px; -unity-text-align: middle-center; color: rgb(255, 254, 254);" /> <ui:VisualElement name="Properties" style="flex-grow: 1; margin-left: 5%; margin-right: 5%; margin-top: 0; margin-bottom: 5%; background-color: rgba(0, 0, 0, 0.39); border-bottom-right-radius: 10px; border-bottom-left-radius: 10px;"> <ui:VisualElement name="Property" style="flex-direction: row; margin-left: 5px; margin-right: 5px; margin-top: 5px; margin-bottom: 5px; flex-grow: 0; justify-content: center;"> <ui:Label text="等级" display-tooltip-when-elided="true" name="Name" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(185, 251, 192); border-top-left-radius: 10px; border-bottom-left-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> <ui:Label text="1" display-tooltip-when-elided="true" name="Value" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(255, 200, 200); border-top-right-radius: 10px; border-bottom-right-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> </ui:VisualElement> <ui:VisualElement name="Property" style="flex-direction: row; margin-left: 5px; margin-right: 5px; margin-top: 5px; margin-bottom: 5px; flex-grow: 0; justify-content: center;"> <ui:Label text="行动力" display-tooltip-when-elided="true" name="Name" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(185, 251, 192); border-top-left-radius: 10px; border-bottom-left-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> <ui:Label text="1" display-tooltip-when-elided="true" name="Value" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(255, 200, 200); border-top-right-radius: 10px; border-bottom-right-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> </ui:VisualElement> <ui:VisualElement name="Property" style="flex-direction: row; margin-left: 5px; margin-right: 5px; margin-top: 5px; margin-bottom: 5px; flex-grow: 0; justify-content: center;"> <ui:Label text="最大HP" display-tooltip-when-elided="true" name="Name" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(185, 251, 192); border-top-left-radius: 10px; border-bottom-left-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> <ui:Label text="1" display-tooltip-when-elided="true" name="Value" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(255, 200, 200); border-top-right-radius: 10px; border-bottom-right-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> </ui:VisualElement> <ui:VisualElement name="Property" style="flex-direction: row; margin-left: 5px; margin-right: 5px; margin-top: 5px; margin-bottom: 5px; flex-grow: 0; justify-content: center;"> <ui:Label text="最大MP" display-tooltip-when-elided="true" name="Name" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(185, 251, 192); border-top-left-radius: 10px; border-bottom-left-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> <ui:Label text="1" display-tooltip-when-elided="true" name="Value" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(255, 200, 200); border-top-right-radius: 10px; border-bottom-right-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> </ui:VisualElement> <ui:VisualElement name="Property" style="flex-direction: row; margin-left: 5px; margin-right: 5px; margin-top: 5px; margin-bottom: 5px; flex-grow: 0; justify-content: center;"> <ui:Label text="攻击力" display-tooltip-when-elided="true" name="Name" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(185, 251, 192); border-top-left-radius: 10px; border-bottom-left-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> <ui:Label text="1" display-tooltip-when-elided="true" name="Value" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(255, 200, 200); border-top-right-radius: 10px; border-bottom-right-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> </ui:VisualElement> <ui:VisualElement name="Property" style="flex-direction: row; margin-left: 5px; margin-right: 5px; margin-top: 5px; margin-bottom: 5px; flex-grow: 0; justify-content: center;"> <ui:Label text="防御力" display-tooltip-when-elided="true" name="Name" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(185, 251, 192); border-top-left-radius: 10px; border-bottom-left-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> <ui:Label text="1" display-tooltip-when-elided="true" name="Value" style="flex-basis: 50%; flex-shrink: 1; background-color: rgb(255, 200, 200); border-top-right-radius: 10px; border-bottom-right-radius: 10px; padding-left: 0; padding-right: 0; padding-top: 0; padding-bottom: 0;" /> </ui:VisualElement> </ui:VisualElement> </ui:VisualElement> </ui:UXML> 保存模板后，删除 Hierarchy 窗口中的 RoleTemplate 元素，后面会通过脚本加载 RoleTemplate。
2.3 自定义元素
RoleView.cs
using System.Collections.Generic; using UnityEngine; using UnityEngine.UIElements; public class RoleView : VisualElement { // 便于在UI Builder中导入自定义UI, 需要有无参构造函数 public new class UxmlFactory : UxmlFactory<RoleView> {} private TemplateContainer container; // 模板容器 private List<VisualElement> properties; // 角色属性 public RoleView() { container = Resources.Load<VisualTreeAsset>("RoleTemplate").Instantiate(); container.style.flexGrow = 1; hierarchy.Add(container); properties = container.Query("Property").ToList(); } public RoleView(RoleData roleData) : this() { userData = roleData; UpdateRoleData(); container.RegisterCallback<MouseDownEvent>(OnClick); } private void OnClick(MouseDownEvent mouseDownEvent) { // 单击角色模板回调函数 RoleData roleData = (RoleData) userData; if (mouseDownEvent.button == 0) { // 按下鼠标左键 roleData.RoleLevel++; } else if (mouseDownEvent.button == 1) { // 按下鼠标右键 roleData.RoleLevel--; } UpdateRoleData(); } private void UpdateRoleData() { // 更新角色数据 RoleData roleData = (RoleData) userData; container.Q<VisualElement>("Image").style.backgroundImage = roleData.RoleImage; container.Q<Label>("NameLab").text = roleData.RoleName; SetProperty(properties[0], roleData.RoleLevel); SetProperty(properties[1], roleData.LevelData.initiative); SetProperty(properties[2], roleData.LevelData.maxHp); SetProperty(properties[3], roleData.LevelData.maxMp); SetProperty(properties[4], roleData.LevelData.attack); SetProperty(properties[5], roleData.LevelData.defense); } private void SetProperty(VisualElement property, int value) { // 更新角色属性 property.Q<Label>("Value").text = value.ToString(); } } 2.4 自定义数据
LevelData.cs
public class LevelData { // 等级属性数据 public int initiative; // 主动权(行动力/速度) public int maxHp; // 最大生命值 public int maxMp; // 最大魔法值 public int attack; // 攻击力 public int defense; // 防御力 } RoleData.cs
using System.Collections.Generic; using UnityEngine; [CreateAssetMenu(menuName = ("RoleData"), fileName = ("RoleData_"))] public class RoleData : ScriptableObject { // 角色属性数据 private const int roleMaxLevel = 10; // 最大等级 [SerializeField] private TextAsset levelDataFile; // 等级数据csv文件 [SerializeField] private Texture2D roleImage; // 角色头像 [SerializeField] private string roleName; // 角色名 [SerializeField, Range(1, roleMaxLevel)] private int roleStartLevel = 1; // 角色开始等级 [SerializeField] private List<LevelData> levelDatas; // 等级数据 private int roleLevel; // 角色当前等级 public Texture2D RoleImage => roleImage; // 获取角色头像 public string RoleName => roleName; // 获取角色名 public int RoleLevel { // 获取/设置角色等级 get => roleLevel; set { if (roleLevel == value || value < 1 || value > roleMaxLevel) { return; } roleLevel = value; } } public LevelData LevelData => levelDatas[roleLevel - 1]; // 获取角色等级数据 private void OnEnable() { roleLevel = roleStartLevel; } private void OnValidate() { if (levelDataFile == null) { return; } if (levelDatas == null) { levelDatas = new List<LevelData>(); } levelDatas.Clear(); string[] textInLines = levelDataFile.text.Split('n'); for (int i = 1; i < textInLines.Length; i++) { string[] statsValues = textInLines[i].Split(","); LevelData levelData = new LevelData(); levelData.initiative = int.Parse(statsValues[0]); levelData.maxHp = int.Parse(statsValues[1]); levelData.maxMp = int.Parse(statsValues[2]); levelData.attack = int.Parse(statsValues[3]); levelData.defense = int.Parse(statsValues[4]); levelDatas.Add(levelData); } } } 编译后，在 Assets 窗口右键，依次选择【Create→RoleData】，创建 4 个对象，对应 4 个角色的配置，分别重命名为 RoleData_1.asset、RoleData_2.asset、RoleData_3.asset、RoleData_4.asset。
选中 ScriptableObject 配置文件后，在 Inspector 窗口配置角色属性。
其中 LevelDataFile 是角色每个等级的属性 cvs 表，内容如下。
2.5 元素加载
RoleLoader.cs
using System.Collections.Generic; using UnityEngine; using UnityEngine.UIElements; public class RoleLoader : MonoBehaviour { [SerializeField] private List<RoleData> roleDatas; // 角色数据 private VisualElement root; // 根容器 private void Awake() { root = GetComponent<UIDocument>().rootVisualElement; var bodyContainer = root.Q("Body"); bodyContainer.Clear(); for(int i = 0; i < roleDatas.Count; i++) { RoleView roleView = new RoleView(roleDatas[i]); roleView.style.flexBasis = Length.Percent(25.0f); bodyContainer.Add(roleView); } } } 说明：RoleLoader 脚本组件挂在 UIDocument 对象上，并且需要将 RoleData_1.asset、RoleData_2.asset、RoleData_3.asset、RoleData_4.asset 赋给 RoleDatas，如下。
2.6 运行效果
运行效果如下，单击卡片，角色的等级会升 1 级，等级属性也会按照 cvs 表格中的策略数据同步更新。
声明：本文转自【Unity3D】UI Toolkit数据动态绑定。
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