C# 反射不调用方法

C# Reflection Not Calling Methods

我正在使用带反射的 Unity,我试图调用某个方法名称 Start,但我的代码没有调用它

这里是ModLoader.cs:

using UnityEngine;
using System.Collections;
using System.IO;
using System.Reflection;
using System.Collections.Generic;

public class ModLoader : MonoBehaviour {
    List<MethodInfo> modMethods = new List<MethodInfo>();

    // Use this for initialization
    void Start () {
        if (!Directory.Exists (Application.dataPath + "/../Mods")) {
            Directory.CreateDirectory (Application.dataPath + "/../Mods");
        }

        foreach (var mod in Directory.GetFiles(Application.dataPath + "/../Mods", "*.dll")) {
            var assembly = Assembly.LoadFile(mod);
            foreach (var type in assembly.GetTypes()) {
                foreach (var method in type.GetMethods()) {
                    modMethods.Add (method);
                }
            }
        }

        //Execute Start method in all mods
        foreach (MethodInfo method in modMethods) {
            print (method.Name);
            if (method.Name == "Start" && method.GetParameters().Length == 0 && method.IsStatic) {
                method.Invoke (null, new object[]{  });
            }
        }
    }

    // Update is called once per frame
    void Update () {
        //Execute Update method in all mods
        foreach (MethodInfo method in modMethods) {
            if (method.Name == "Update" && method.GetParameters().Length == 0 && method.IsStatic) {
                method.Invoke (null, new object[]{  });
            }
        }
    }
}

这是我的 mod(a .dll):

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using UnityEngine;

public class Class1 {
    static void Start () {
        Debug.Log("hello world");

        foreach (GameObject go in GameObject.FindObjectsOfType<GameObject>()) {
            if (go.GetComponent<MeshRenderer>()) {
                go.GetComponent<MeshRenderer>().material.color = new Color(1f, 0f, 0f);
            }
        }
    }
}

我在 "Mods" 文件夹中有来自构建的 dll,我知道我的脚本找到了它,我只是不知道为什么没有调用方法 ID。

如果您的 Start 方法中没有 public 关键字,它不会是 public,并且 GetMethods() 只会查找 public 默认方法。

要么使 Start public,要么将 type.GetMethods() 更改为 type.GetMethods(BindingFlags.NonPublic | BindingFlags.Static)

您模块中的 Start 方法是私有的。默认情况下,反射与 public 方法一起使用。你需要做到 public:

public class Class1 {
    public static void Start () {
        Debug.Log("hello world");

        foreach (GameObject go in GameObject.FindObjectsOfType<GameObject>()) {
            if (go.GetComponent<MeshRenderer>()) {
                go.GetComponent<MeshRenderer>().material.color = new Color(1f, 0f, 0f);
            }
        }
    }
}

或为 GetMethods 方法指定 BindingFlags。您需要 BindingFlags.Static 和 BindingFlags.NonPublic

type.GetMethods(System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.NonPublic)