修改

Runtime/UXComponent/UX/UXButton.cs

@@ -84,6 +84,11 @@ public class UXButton : UIBehaviour, IButton,
 
     #region Properties
 
+    internal bool Interactable
+    {
+        get => m_Interactable;
+    }
+
     internal Animator animator
     {
         get

Runtime/UXComponent/UX/UXGroup.cs

@@ -31,6 +31,7 @@ public class UXGroup : UIBehaviour
         {
             if (button) button.IsSelected = false;
         }
+
         m_Buttons.Clear();
         _registeredButtons.Clear();
         base.OnDestroy();
@@ -113,6 +114,64 @@ public class UXGroup : UIBehaviour
             if (button != exclusion && button.IsSelected)
                 return true;
         }
+
         return false;
     }
+
+
+    public void SelectPrevious()
+    {
+        if (m_Buttons.Count == 0) return;
+
+        int startIndex = _current ? m_Buttons.IndexOf(_current) : -1;
+        int newIndex = FindSelectableIndex(startIndex, -1);
+
+        if (newIndex != -1)
+        {
+            SetSelectedButton(m_Buttons[newIndex]);
+        }
+    }
+
+
+    public void SelectNext()
+    {
+        if (m_Buttons.Count == 0) return;
+
+        int startIndex = _current ? m_Buttons.IndexOf(_current) : 0;
+        int newIndex = FindSelectableIndex(startIndex, 1);
+
+        if (newIndex != -1)
+        {
+            SetSelectedButton(m_Buttons[newIndex]);
+        }
+    }
+
+
+    private int FindSelectableIndex(int startIndex, int direction)
+    {
+        if (m_Buttons.Count == 0) return -1;
+
+        startIndex = Mathf.Clamp(startIndex, -1, m_Buttons.Count - 1);
+
+        int fallback = -1;
+
+        for (int i = 0; i < m_Buttons.Count; i++)
+        {
+            int index = (startIndex + direction + m_Buttons.Count + i * direction) % m_Buttons.Count;
+
+            index = direction < 0 ? (m_Buttons.Count - index - 1) : index;
+
+            var button = m_Buttons[index];
+
+            if (button == null || !button.isActiveAndEnabled || !button.Interactable)
+                continue;
+
+            if (fallback == -1) fallback = index;
+
+            if (_current == null)
+                return index;
+        }
+
+        return fallback;
+    }
 }