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Unity 工具类 之 简单网络下载任务队列服务实现(WWW/UnityWebRequest/下载AssetBundle/Audioclip/Texture2D/Text等)_unity besthttp 下载audioclip

作者：盐析白兔 | 2024-02-16 17:37:56

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unity besthttp 下载audioclip

 

Unity 工具类 之 简单网络下载任务队列服务实现(WWW/UnityWebRequest/下载AssetBundle/Audioclip/Texture2D/Text等)

 

目录

Unity 工具类 之 简单网络下载任务队列服务实现(WWW/UnityWebRequest/下载AssetBundle/Audioclip/Texture2D/Text等)

一、简单介绍

二、实现原理

三、效果预览

四、实现步骤

五、关键代码

 

一、简单介绍

Unity 工具类，自己整理的一些游戏开发可能用到的模块，单独独立使用，方便游戏开发。

简单网络下载任务队列服务，单独做了一个单例类，实现向服务中添加任务，就会自动下载对应的下载任务，可以根据自己的需要添加自己下载后的资源管理，以及扩展其他下载类型的任务和功能，供外界调用。

 

二、实现原理

1、IWWWBase 和 WWWBase ，作为具体的下载类型基类，定义共有方法和属性；

2、WWWAudio 、WWWImage 实现具体类型下载方法和开始下载、下载错误、下载完成的事件（根据需要可以自行拓展）；

3、WWWService 负责添加下载任务，并自动下载对应下载任务；

4、简单网络下载任务队列服务 大概的框架如下：

 

 

三、效果预览

 

四、实现步骤

1、打开Unity，新建一个空工程

 

2、在场景中添加 RawImage和Text 用显示下载的图片的和Text文本

 

3、新建脚本，实现各个类型下载，以及 下载服务类，添加任务下载，和一个测试功能的脚本

 

4、把测试脚本对应添加到场景中，并对应的赋值

 

5、运行脚本，会有图片显示、文本显示，以及一个音频播放

6、断网的时候，结果如下

 

五、关键代码

1、TestWWWService

  1. using System.Collections;
  2. using System.Collections.Generic;
  3. using UnityEngine;
  4. using UnityEngine.UI;
  5.  
  6. public class TestWWWService : MonoBehaviour
  7. {
  8.     public RawImage rawImage;
  9.     public Text text;
  10.     AudioSource audioSource;
  11.  
  12.     // Start is called before the first frame update
  13.     void Start()
  14.     {
  15.         audioSource =this.gameObject.AddComponent<AudioSource>();
  16.         Test();
  17.     }
  18.  
  19.     void Test() {
  20.         string imageUrl = @"https://ss1.bdstatic.com/70cFvXSh_Q1YnxGkpoWK1HF6hhy/it/u=1752460159,226752426&fm=26&gp=0.jpg";
  21.         WWWImage wImage =  new WWWImage(imageUrl,
  22.             (texture)=> {
  23.                 rawImage.texture = (Texture2D)texture;
  24.                 if (WWWService.Instance.wImageDic.ContainsKey(imageUrl) == false)
  25.                 {
  26.                     WWWService.Instance.wImageDic.Add(imageUrl, (Texture2D)texture);
  27.                 }
  28.             });
  29.  
  30.         string audioUrl = @"http://downsc.chinaz.net/Files/DownLoad/sound1/201702/8369.wav";
  31.         WWWAudio wAudio =  new WWWAudio(audioUrl, 
  32.             (clip) =>{
  33.  
  34.             audioSource.clip = (AudioClip)clip;
  35.             audioSource.Play();
  36.  
  37.                 if (WWWService.Instance.wAudipDic.ContainsKey(audioUrl) == false)
  38.                 {
  39.                     WWWService.Instance.wAudipDic.Add(audioUrl, (AudioClip)clip);
  40.                 }
  41.             });
  42.  
  43.         string txtUrl = @"http://baidu.com";
  44.         WWWText wText =  new WWWText(txtUrl, 
  45.             (txt)=>{
  46.                 text.text = (string)txt;
  47.  
  48.                 if (WWWService.Instance.wTextDic.ContainsKey(txtUrl) == false)
  49.                 {
  50.                     WWWService.Instance.wTextDic.Add(txtUrl, (string)txt);
  51.                 }
  52.             });
  53.  
  54.         WWWService.Instance.AddWWWTask(wImage);
  55.         WWWService.Instance.AddWWWTask(wAudio);
  56.         WWWService.Instance.AddWWWTask(wText);
  57.     }
  58. }

 

2、WWWService

  1. using System.Collections;
  2. using System.Collections.Generic;
  3. using UnityEngine;
  4.  
  5. public class WWWService : MonoSingleton<WWWService>
  6. {
  7.     // 下载队列
  8.     private Queue<WWWBase> allWWWTaskQue = new Queue<WWWBase>();
  9.  
  10.     #region 数据管理
  11.  
  12.     internal Dictionary<string, string> wTextDic = new Dictionary<string, string>();
  13.     internal Dictionary<string, Texture2D> wImageDic = new Dictionary<string, Texture2D>();
  14.     internal Dictionary<string, AudioClip> wAudipDic = new Dictionary<string, AudioClip>();
  15.  
  16.     #endregion
  17.  
  18.     #region 下载任务
  19.  
  20.     public void AddWWWTask(WWWBase task) {
  21.  
  22.         Debug.Log(GetType()+ "/AddWWWTask() Add One WWW Task/");
  23.  
  24.         allWWWTaskQue.Enqueue(task);
  25.  
  26.         // 有开始下载
  27.         if (allWWWTaskQue.Count == 1)
  28.         {
  29.             // 协程开始任务下载
  30.             StartCoroutine(DownloadWWWTask());
  31.         }
  32.     }
  33.  
  34.     IEnumerator DownloadWWWTask() {
  35.  
  36.         // 循环到下载完为止
  37.         while (allWWWTaskQue.Count > 0)
  38.         {
  39.             WWWBase task = allWWWTaskQue.Dequeue();
  40.  
  41.             // 等待这个任务下载完
  42.             yield return task.Download();
  43.         }
  44.     }
  45.  
  46.     #endregion
  47. }

 

3、IWWWBase

  1. using System.Collections;
  2. using System.Collections.Generic;
  3. using UnityEngine;
  4. using UnityEngine.Networking;
  5.  
  6. public interface IWWWBase 
  7. {
  8.     //开始下载
  9.     void BeginDownload();
  10.  
  11.     // 下载出错
  12.     void DownloadError(UnityWebRequest uwr);
  13.  
  14.     // 下载结束
  15.     void DownloadFinish(UnityWebRequest uwr);
  16.  
  17.     // 协程下载
  18.     IEnumerator Download();
  19. }

 

4、WWWBase

  1. using System;
  2. using System.Collections;
  3. using System.Collections.Generic;
  4. using UnityEngine;
  5. using UnityEngine.Networking;
  6.  
  7. public class WWWBase : IWWWBase
  8. {
  9.     private string url;   
  10.     public string Url { get => url; set => url = value; }
  11.  
  12.     protected Action<object> action;
  13.  
  14.     public WWWBase(string url, Action<object> action = null)
  15.     {
  16.         Url = url;
  17.         this.action = action;
  18.     }
  19.  
  20.  
  21.     public virtual void BeginDownload()
  22.     {
  23.     }
  24.  
  25.     public virtual void DownloadError(UnityWebRequest uwr)
  26.     {
  27.     }
  28.  
  29.     public virtual void DownloadFinish(UnityWebRequest uwr)
  30.     {
  31.         
  32.     }
  33.  
  34.     public virtual IEnumerator Download()
  35.     {
  36.         BeginDownload();
  37.  
  38.         using (UnityWebRequest uwr = UnityWebRequest.Get(Url))
  39.         {
  40.             yield return uwr.SendWebRequest();
  41.             if (!(uwr.isNetworkError || uwr.isHttpError))
  42.             {
  43.                 DownloadFinish(uwr);
  44.             }
  45.             else
  46.             {
  47.                 DownloadError(uwr);
  48.             }
  49.         }
  50.     }
  51. }

 

5、WWWAudio

  1. using System;
  2. using System.Collections;
  3. using System.Collections.Generic;
  4. using UnityEngine;
  5. using UnityEngine.Networking;
  6.  
  7. public class WWWAudio : WWWBase
  8. {
  9.     // 最好构建资源管理统一放置
  10.     public AudioClip clip;
  11.  
  12.     public WWWAudio(string url, Action<object> action = null) : base(url, action)
  13.     {
  14.  
  15.     }
  16.     
  17.  
  18.  
  19.     public override void BeginDownload()
  20.     {
  21.         
  22.  
  23.         Debug.Log(GetType()+ "/BeginDownload()/ Audio");
  24.     }
  25.  
  26.     public override void DownloadError(UnityWebRequest uwr)
  27.     {
  28.         
  29.  
  30.         Debug.Log(GetType() + "/BeginDownload()/ Audio uwr.error : " + uwr.error);
  31.     }
  32.  
  33.     public override void DownloadFinish(UnityWebRequest uwr)
  34.     {
  35.         clip = DownloadHandlerAudioClip.GetContent(uwr);
  36.         action?.Invoke(clip);
  37.     }
  38.  
  39.     public override IEnumerator Download()
  40.     {
  41.         BeginDownload();
  42.  
  43.         using (var uwr = UnityWebRequestMultimedia.GetAudioClip(Url, AudioType.WAV))
  44.         {
  45.             yield return uwr.SendWebRequest();
  46.             if (!(uwr.isNetworkError || uwr.isHttpError))
  47.             {
  48.                 DownloadFinish(uwr);
  49.             }
  50.             else
  51.             {
  52.                 DownloadError(uwr);
  53.             }
  54.         }
  55.     }
  56. }

 

6、WWWImage

  1. using System;
  2. using System.Collections;
  3. using System.Collections.Generic;
  4. using UnityEngine;
  5. using UnityEngine.Networking;
  6.  
  7. public class WWWImage : WWWBase
  8. {
  9.     // 最好构建资源管理统一放置
  10.     public Texture2D texture2D;
  11.    
  12.  
  13.  
  14.     public WWWImage(string url , Action<object> action = null):base(url,action)
  15.     {
  16.         
  17.     }
  18.  
  19.  
  20.     public override void BeginDownload()
  21.     {
  22.  
  23.  
  24.         Debug.Log(GetType() + "/BeginDownload()/ Image");
  25.     }
  26.  
  27.     public override void DownloadError(UnityWebRequest uwr)
  28.     {
  29.  
  30.  
  31.         Debug.Log(GetType() + "/BeginDownload()/ Image uwr.error : " + uwr.error);
  32.     }
  33.  
  34.     public override void DownloadFinish(UnityWebRequest uwr)
  35.     {
  36.         texture2D = ((DownloadHandlerTexture)uwr.downloadHandler).texture;
  37.         action?.Invoke(texture2D);
  38.     }
  39.  
  40.     public override IEnumerator Download()
  41.     {
  42.         BeginDownload();
  43.  
  44.         using (UnityWebRequest uwr = new UnityWebRequest(Url))
  45.         {
  46.             DownloadHandlerTexture downloadTexture = new DownloadHandlerTexture(true);
  47.             uwr.downloadHandler = downloadTexture;
  48.             yield return uwr.SendWebRequest();
  49.             if (!(uwr.isNetworkError || uwr.isHttpError))
  50.             {
  51.                 DownloadFinish(uwr);
  52.             }
  53.             else
  54.             {
  55.                 DownloadError(uwr);
  56.             }            
  57.         }
  58.     }
  59. }

 

7、WWWText

  1. using System;
  2. using System.Collections;
  3. using System.Collections.Generic;
  4. using System.IO;
  5. using UnityEngine;
  6. using UnityEngine.Networking;
  7.  
  8. public class WWWText : WWWBase
  9. {
  10.     // 最好构建资源管理统一放置
  11.     public string txtStr;
  12.  
  13.     public WWWText(string url, Action<object> action = null) : base(url, action)
  14.     {
  15.  
  16.     }
  17.  
  18.     public override void BeginDownload()
  19.     {
  20.  
  21.  
  22.         Debug.Log(GetType() + "/BeginDownload()/ Text");
  23.     }
  24.  
  25.     public override void DownloadError(UnityWebRequest uwr)
  26.     {
  27.  
  28.  
  29.         Debug.Log(GetType() + "/BeginDownload()/ Text uwr.error : " + uwr.error);
  30.     }
  31.  
  32.     public override void DownloadFinish(UnityWebRequest uwr)
  33.     {        
  34.         txtStr = uwr.downloadHandler.text;
  35.         action?.Invoke(txtStr);
  36.     }
  37.  
  38.     public override IEnumerator Download()
  39.     {
  40.         BeginDownload();
  41.  
  42.         using (UnityWebRequest uwr = UnityWebRequest.Get(Url)) {
  43.         
  44.             yield return uwr.SendWebRequest();
  45.             if (!(uwr.isNetworkError || uwr.isHttpError))
  46.             {
  47.                 DownloadFinish(uwr);
  48.             }
  49.             else
  50.             {
  51.                 DownloadError(uwr);
  52.             }
  53.             
  54.             // 保存本地(酌情处理)
  55.             //File.WriteAllText(@"D:\xxxx.txt", str);
  56.         }
  57.     }
  58. }

 

8、WWWAssetBundle

  1. using System;
  2. using System.Collections;
  3. using System.Collections.Generic;
  4. using UnityEngine;
  5. using UnityEngine.Networking;
  6.  
  7. public class WWWAssetBundle : WWWBase
  8. {
  9.     // 最好构建资源管理统一放置
  10.     public AssetBundle assetBundle;
  11.  
  12.     public WWWAssetBundle(string url, Action<object> action = null) : base(url, action)
  13.     {
  14.  
  15.     }
  16.  
  17.  
  18.     public override void BeginDownload()
  19.     {
  20.         Debug.Log(GetType() + "/BeginDownload()/ AssetBundle");
  21.     }
  22.  
  23.     public override void DownloadError(UnityWebRequest uwr)
  24.     {
  25.  
  26.  
  27.         Debug.Log(GetType() + "/BeginDownload()/ AssetBundle uwr.error : " + uwr.error);
  28.     }
  29.  
  30.     public override void DownloadFinish(UnityWebRequest uwr)
  31.     {
  32.         assetBundle = ((DownloadHandlerAssetBundle)uwr.downloadHandler).assetBundle;
  33.     }
  34.  
  35.     public override IEnumerator Download()
  36.     {
  37.         BeginDownload();
  38.  
  39.         using (UnityWebRequest uwr = new UnityWebRequest(Url))
  40.         {
  41.             DownloadHandlerAssetBundle handler = new DownloadHandlerAssetBundle(uwr.url, uint.MaxValue);
  42.             uwr.downloadHandler = handler;
  43.             yield return uwr.SendWebRequest();
  44.  
  45.             if (!(uwr.isNetworkError || uwr.isHttpError))
  46.             {
  47.                 DownloadFinish(uwr);
  48.             }
  49.             else
  50.             {
  51.                 DownloadError(uwr);
  52.             }
  53.  
  54.         }
  55.     }
  56. }

 

9、MonoSingleton

  1. using UnityEngine;
  2.  
  3. public abstract class MonoSingleton<T> : MonoBehaviour where T : MonoBehaviour
  4. {
  5.     private static T instance = null;
  6.  
  7.     private static readonly object locker = new object();
  8.  
  9.     private static bool bAppQuitting;
  10.  
  11.     public static T Instance
  12.     {
  13.         get
  14.         {
  15.             if (bAppQuitting)
  16.             {
  17.                 instance = null;
  18.                 return instance;
  19.             }
  20.  
  21.             lock (locker)
  22.             {
  23.                 if (instance == null)
  24.                 {
  25.                     instance = FindObjectOfType<T>();
  26.                     if (FindObjectsOfType<T>().Length > 1)
  27.                     {
  28.                         Debug.LogError("不应该存在多个单例！");
  29.                         return instance;
  30.                     }
  31.  
  32.                     if (instance == null)
  33.                     {
  34.                         var singleton = new GameObject();
  35.                         instance = singleton.AddComponent<T>();
  36.                         singleton.name = "(singleton)" + typeof(T);
  37.                         singleton.hideFlags = HideFlags.None;
  38.                         DontDestroyOnLoad(singleton);
  39.                     }
  40.                     else
  41.                         DontDestroyOnLoad(instance.gameObject);
  42.                 }
  43.                 instance.hideFlags = HideFlags.None;
  44.                 return instance;
  45.             }
  46.         }
  47.     }
  48.  
  49.     private void Awake()
  50.     {
  51.         bAppQuitting = false;
  52.     }
  53.  
  54.     private void OnDestroy()
  55.     {
  56.         bAppQuitting = true;
  57.     }
  58. }

 

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