__开关组__不是可见的 UI 控件,而是一种修改一组开关的行为的方法。属于同一组的开关将受到约束,即一次只能打开其中一个开关:通过按下打开其中一个开关便会自动关闭其他开关。
属性: | 功能: |
---|---|
Allow Switch Off | 是否允许不打开任何开关?如果启用此设置,则按下当前打开的开关会将其关闭,因此没有任何开关处于打开状态。如果禁用此设置,则按下当前打开的开关将不改变该开关的状态。 |
通过将开关组对象拖动到组中每个开关的 Group 属性即可设置开关组。
当用户必须从互斥的一组选项进行选择时,便可使用开关组。常见示例包括选择玩家角色类型、速度设置(慢速、中速、快速等)、预设颜色和一周中的日期。在场景中可以同时有多个开关组对象,因此可以根据需要创建多个单独的组。
与其他 UI 元素不同,具有开关组 (Toggle Group) 组件的对象不必是画布对象的子项,但开关本身仍然是其子项。
请注意,如果在加载场景或实例化组时,开关组中的多个开关为打开状态,则开关组不会立即执行其约束。只有当新开关打开时,其他开关才会关闭。这意味着需要由您确保在开始时只打开一个开关。
ToggleGroup
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