设计类网站策划书,睡不着来个网址2022,推荐营销型网站建设,如何做网站外链1、什么是引用计数规则#xff1f;
当通过加载使用可寻址资源时#xff0c;Addressables会在内部帮助我们进行引用计数#xff0c;使用资源时#xff0c;引用计数1#xff0c;释放资源时#xff0c;引用计数-1#xff0c;当可寻址资源的引用为0时#xff0c;就可以卸载…1、什么是引用计数规则
当通过加载使用可寻址资源时Addressables会在内部帮助我们进行引用计数使用资源时引用计数1释放资源时引用计数-1当可寻址资源的引用为0时就可以卸载它了
为了避免内存泄露不需要使用的内容残留在内存中我们要保证加载资源和卸载资源是配对使用的
注意释放的资源不一定立即从内存中卸载在卸载资源所属的AB包之前不会释放资源使用的内存(比如自己所在的AB包 被别人使用时这时AB包不会被卸载所以自己还在内存中)我们可以使用Resources.UnloadUnusedAssets卸载资源建议在切换场景时调用
AB包也有自己的引用计数Addressables把它也视为可寻址资源从AB包中加载资源时引用计数1从AB包中卸载资源时引用计数-1当AB包引用计数为0时意味着不再使用了这时会从内存中卸载
总结Addressables内部会通过引用计数帮助我们管理内存我们只需要保证 加载和卸载资源配对使用即可
2、AddressableMgr
using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using NUnit.Framework;
using Unity.VisualScripting;
using UnityEngine;
using UnityEngine.AddressableAssets;
using UnityEngine.ResourceManagement.AsyncOperations;public class AddresssablesInfo
{public AsyncOperationHandle handle;public uint count;public AddresssablesInfo(AsyncOperationHandle handle){this.handle handle;count 1;}
}public class AddressableMgr
{public static AddressableMgr instance new AddressableMgr();public static AddressableMgr Instance instance;// 有一个容帮助存储异步加载的返回值public Dictionarystring, AddresssablesInfo resDic new Dictionarystring, AddresssablesInfo();private AddressableMgr() { }public void LoadAssetAsyncT(string name, ActionAsyncOperationHandleT callback){// 由于存在同名不同类型资源区分加载所以通过名字和类型进行拼接作为 Keystring keyName name _ typeof(T).Name;AsyncOperationHandleT handle;// 已经加载过该资源if (resDic.ContainsKey(keyName)){// 获取异步加载返回的 handlehandle resDic[keyName].handle.ConvertT();resDic[keyName].count 1;if (handle.IsDone){callback(handle);}// 还没有加载完成else {// 如果还没有异步加载完成只需要添加委托告诉完成后做什么handle.Completed (obj) {if (obj.Status AsyncOperationStatus.Succeeded)callback(obj);};}return;}// 如果没有加载过该资源直接进行异步加载并记录handle Addressables.LoadAssetAsyncT(name);handle.Completed (obj) {if (obj.Status AsyncOperationStatus.Succeeded)callback(obj);else{Debug.LogWarning(keyName load asset failed);if (resDic.ContainsKey(keyName))resDic.Remove(keyName);}};AddresssablesInfo info new AddresssablesInfo(handle);resDic.Add(keyName, info);}public void ReleaseT(string name){string keyName name _ typeof(T).Name;if (resDic.ContainsKey(keyName)){resDic[keyName].count - 1;if (resDic[keyName].count 0){AsyncOperationHandleT handle resDic[keyName].handle.ConvertT();Addressables.Release(handle);resDic.Remove(keyName);}}}// 异步加载多个资源 或者 加载指定资源private string FormatKeyNameT(Liststring keys){string keyName ;foreach (string key in keys)keyName key _;keyName typeof(T).Name;return keyName;}public void LoadAssetAsyncT(Addressables.MergeMode mode, ActionT callBack, params string[] keys){// 1.构建一个 keyName 之后存入到字典中Liststring list new Liststring(keys);string keyName FormatKeyNameT(list);// 2.判断是否存在已经加载过的内容AsyncOperationHandleIListT handle;if (resDic.ContainsKey(keyName)){handle resDic[keyName].handle.ConvertIListT();resDic[keyName].count 1;// 异步加载是否结束if (handle.IsDone){foreach(T item in handle.Result) callBack(item);}else{handle.Completed (obj) {if (obj.Status AsyncOperationStatus.Succeeded){foreach (T item in handle.Result)callBack(item);}};}return;}handle Addressables.LoadAssetsAsyncT(list, callBack, mode);handle.Completed (obj) {if (obj.Status AsyncOperationStatus.Failed){Debug.LogWarning(keyName load asset failed);if (resDic.ContainsKey(keyName))resDic.Remove(keyName);}};AddresssablesInfo info new AddresssablesInfo(handle);resDic.Add(keyName, info);}public void LoadAssetAsyncT(Addressables.MergeMode mode, ActionAsyncOperationHandleIListT callBack, params string[] keys){// 1.构建一个 keyName 之后存入到字典中Liststring list new Liststring(keys);string keyName FormatKeyNameT(list);// 2.判断是否存在已经加载过的内容AsyncOperationHandleIListT handle;if (resDic.ContainsKey(keyName)){handle resDic[keyName].handle.ConvertIListT();resDic[keyName].count 1;// 异步加载是否结束if (handle.IsDone){callBack(handle);}else{handle.Completed (obj) {if (obj.Status AsyncOperationStatus.Succeeded){callBack(handle);}};}return;}handle Addressables.LoadAssetsAsyncT(list, null, mode);handle.Completed (obj) {if (obj.Status AsyncOperationStatus.Failed){Debug.LogWarning(keyName load asset failed);if (resDic.ContainsKey(keyName))resDic.Remove(keyName);}else{callBack(handle);}};AddresssablesInfo info new AddresssablesInfo(handle);resDic.Add(keyName, info);}public void ReleaseT(params string[] keys){Liststring list new Liststring(keys);string keyName FormatKeyNameT(list);if ( resDic.ContainsKey(keyName)){resDic[keyName].count - 1;if (resDic[keyName].count 0){AsyncOperationHandleIListT handle resDic[keyName].handle.ConvertIListT();Addressables.Release(handle);resDic.Remove(keyName);}}}public void Clear(){foreach (var item in resDic.Values){Addressables.Release(item.handle);}resDic.Clear();AssetBundle.UnloadAllAssetBundles(true);Resources.UnloadUnusedAssets();GC.Collect();}}
