在Unity中，协程通常是通过MonoBehaviour的StartCoroutine方法来启动的。很多时候，我们写逻辑层代码的时候也希望能够调用协程，例如网络通讯等功能，这就需要一个中介来帮你做这件事。这个中介通常是一个继承自MonoBehaviour的管理类，它可以提供启动和管理协程的方法。
以下是一个简单的协程管理类的实现：
using System.Collections;
using System.Collections.Generic;
#if UNITY_EDITOR
using UnityEditor;
#endif
using UnityEngine;/// <summary>
/// 协程启动类(适用于非继承自MonoBehaviour的脚本启动协程)
/// </summary>
public class CoroutineStarter : MonoBehaviour
{private static CoroutineStarter _instance;private static bool editor_mode = false;private static CoroutineStarter Instance{get{
#if UNITY_EDITORif (!Application.isPlaying) return null;
#endifif (editor_mode) return null;if (_instance == null){GameObject obj = new GameObject("CoroutineStarter");obj.AddComponent<CoroutineStarter>();}return _instance;}}#if UNITY_EDITORprivate static void EditorApplicationStateChanged(PlayModeStateChange state){switch (state){case PlayModeStateChange.ExitingPlayMode:editor_mode = true;break;case PlayModeStateChange.ExitingEditMode:editor_mode = false;break;case PlayModeStateChange.EnteredEditMode:editor_mode = true;break;case PlayModeStateChange.EnteredPlayMode:editor_mode = false;break;}}
#endifvoid Awake(){_instance = this;DontDestroyOnLoad(gameObject);
#if UNITY_EDITOREditorApplication.playModeStateChanged += EditorApplicationStateChanged;
#endif}/// <summary>/// 启动协程（适用于在非继承自MonoBehaviour的脚本中启动协程）,且通过该方法启动的协程不会因为切换场景而停止/// </summary>/// <param name="enumerator"></param>public static Coroutine Start(IEnumerator enumerator){if (Instance == null){return null;}return Instance.StartCoroutine(enumerator);}/// <summary>/// 停止由CoroutineStarter启动的协程 /// </summary>/// <param name="coroutine"></param>public static void Stop(Coroutine coroutine){if (Instance == null) return;Instance.StopCoroutine(coroutine);}private void OnDestroy(){_instance = null;#if UNITY_EDITOREditorApplication.playModeStateChanged -= EditorApplicationStateChanged;
#endif}}
这个脚本使用时会自动生成一个空物体并完成挂载
使用时：
CoroutineStarter.Start(MyCoroutine());
IEnumerator MyCoroutine()
{ // 协程的逻辑代码 yield return null;
}
