Unity的RuntimeInitializeOnLoadMethod属性初探

本文转载自查看原文 2017-09-27 15:49 4812 Unity

Unity 5.0开始增加了RuntimeInitializeOnLoadMethodAttribute，这样就很方便在游戏初始化之前做一些额外的初始化工作，比如：Bulgy参数设置、SDK初始等工作。

先来看一下它的生命周期

sing UnityEngine;

public class ExampleClass : MonoBehaviour
{
    private void Awake()
    {
        Debug.Log( "Awake" );
    }

    private void OnEnable()
    {
        Debug.Log( "OnEnable" );
    }

    private void Start()
    {
        Debug.Log( "Start" );
    }

    [RuntimeInitializeOnLoadMethod]
    private static void OnRuntimeMethodLoad()
    {
        Debug.Log( "RuntimeInitializeOnLoadMethod" );
    }
}

输出结果

而它还有两个属性：RuntimeInitializeLoadType.BeforeSceneLoad | RuntimeInitializeLoadType.AfterSceneLoad

using UnityEngine;

public class InitTest  : MonoBehaviour
{
    [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
    static void OnBeforeSceneLoadRuntimeMethod ()
    {
        Debug.Log("Before scene loaded");
    }

    void Awake()
    {
        Debug.Log("Awake");
    }
    void OnEnable()
    {
        Debug.Log("OnEnable");
    }

    [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.AfterSceneLoad)]
    static void OnAfterSceneLoadRuntimeMethod()
    {
        Debug.Log("After scene loaded");
    }

    [RuntimeInitializeOnLoadMethod]
    static void OnRuntimeMethodLoad()
    {
        Debug.Log("RuntimeMethodLoad: After scene loaded");
    }

    void Start()
    {
        Debug.Log("Start");
    }

}