SerializedProperty.InsertArrayElementAtIndex

描述

在数组的指定索引处插入一个新元素。

插入元素的值未定义，应在此函数调用后显式设置。
其他资源：isArray、arraySize、GetArrayElementAtIndex。

using UnityEditor;
using UnityEngine;

public class InsertArrayElementAtIndexExample : ScriptableObject
{
    public string[] m_Data;

    [MenuItem("Example/SerializedProperty/InsertArrayElementAtIndex Example")]
    static void MenuCallback()
    {
        InsertArrayElementAtIndexExample obj = ScriptableObject.CreateInstance<InsertArrayElementAtIndexExample>();
        obj.m_Data = new string[] { "The", "cat" };

        SerializedObject serializedObject = new SerializedObject(obj);
        SerializedProperty arrayProperty = serializedObject.FindProperty("m_Data");

        arrayProperty.InsertArrayElementAtIndex(1);
        arrayProperty.GetArrayElementAtIndex(1).stringValue = "big";

        arrayProperty.InsertArrayElementAtIndex(arrayProperty.arraySize);
        arrayProperty.GetArrayElementAtIndex(arrayProperty.arraySize - 1).stringValue = "jumped.";

        serializedObject.ApplyModifiedProperties();

        // Outputs "The big cat jumped."
        Debug.Log("Final array contents: " + string.Join(" ", obj.m_Data));
    }
}