using System;
using System.Collections;
using System.Collections.Generic;
using System.Threading;
using UnityEngine;
using UnityEngine.UI;

public class thread_test : MonoBehaviour
{
    bool shouldStop = false;
    Text text_log;
    // 用于同步主线程的上下文
    private SynchronizationContext mainThreadContext;		//===========定义===============

    // Start is called before the first frame update
    void Start()
    {
        text_log = GameObject.Find("Text_log").GetComponent<Text>();
        text_log.text = "哈哈哈";
        mainThreadContext = SynchronizationContext.Current;	//============获取=================
        // 主线程开始执行
        Thread thread = new Thread(thread_run);
        thread.IsBackground = true;
        thread.Start();
    }

    private void thread_run(object obj)
    {
        int i = 0;
        int x = 0;
        while (!shouldStop)
        {
            // 切换到主线程执行
            //mainThreadContext.Post( gaitext, i++);	//===========第一种方法===========
            mainThreadContext.Post((state) =>			//===========第二种方法===========
            {
                int index = i++;
                // 处理逻辑
                text_log.text = "我是子线程，" + i.ToString();
                Debug.Log("state:" + state);
            }, null);


            // 使用 Post 方法异步调度任务
            mainThreadContext.Post(state =>				//=============================
            {
                int index = (int)state;
                Debug.Log($"Index: {index} on thread: {Thread.CurrentThread.ManagedThreadId}");
                // 处理逻辑
            }, ++x);

            Debug.Log("Post method called, this line will execute immediately");



            Thread.Sleep(1000);
        }
    }

    private void gaitext(object state)
    {
        // int i = (int)state;
        // text_log.text = "我是子线程，" + i.ToString();
    }

    // Update is called once per frame
    void Update()
    {
        
    }


    void OnDestroy()
    {
        // 在对象销毁时通知线程停止
        shouldStop = true;

        // if (workerThread != null && workerThread.IsAlive)
        // {
        //     // 等待线程完成
        //     workerThread.Join(1000); // 等待最多1秒
        // }
    }
}

记录一下，后面好用