Unity2019对于弃用WWW加载方式后的新替代的API的UnityWebRequest的使用

Unity2019对WWW弃用了，换成了新的API：UnityWebRequest。其使用方式也发生了很多改变，具体使用方法如下：

1.加载图片：(对应API说明链接：点我)

using UnityEngine;
using UnityEngine.Networking;
using System.Collections;
 
public class MyBehaviour : MonoBehaviour
{
    void Start()
    {
        StartCoroutine(GetText());
    }
 
    IEnumerator GetText()
    {
        using (UnityWebRequest uwr = UnityWebRequestTexture.GetTexture("http://www.my-server.com/myimage.png"))
        {
            yield return uwr.SendWebRequest();
 
            if (uwr.isNetworkError || uwr.isHttpError)
            {
                Debug.Log(uwr.error);
            }
            else
            {
                // Get downloaded asset bundle
                var texture = DownloadHandlerTexture.GetContent(uwr);
            }
        }
    }
}

2.加载音频以及视频：(对应API说明链接：点我)

using UnityEngine;
using UnityEngine.Networking;
using System.Collections;
 
public class MyBehaviour : MonoBehaviour
{
    void Start()
    {
        StartCoroutine(GetAudioClip());
    }
 
    IEnumerator GetAudioClip()
    {
        using (UnityWebRequest www = UnityWebRequestMultimedia.GetAudioClip("http://www.my-server.com/audio.ogg", AudioType.OGGVORBIS))
        {
            yield return www.Send();
 
            if (www.isError)
            {
                Debug.Log(www.error);
            }
            else
            {
                AudioClip myClip = DownloadHandlerAudioClip.GetContent(www);
            }
        }
    }
}

3.加载AssetsBundle包：(对应API说明链接：点我)

using UnityEngine;
using UnityEngine.Networking;
using System.Collections;
 
public class MyBehaviour : MonoBehaviour
{
    void Start()
    {
        StartCoroutine(GetText());
    }
 
    IEnumerator GetText()
    {
        using (UnityWebRequest uwr = UnityWebRequestAssetBundle.GetAssetBundle("http://www.my-server.com/mybundle"))
        {
            yield return uwr.SendWebRequest();
 
            if (uwr.isNetworkError || uwr.isHttpError)
            {
                Debug.Log(uwr.error);
            }
            else
            {
                // Get downloaded asset bundle
                AssetBundle bundle = DownloadHandlerAssetBundle.GetContent(uwr);
            }
        }
    }
}

最后关于UnityWebRequest类的介绍可以参考这边文章：https://blog.csdn.net/qwe25878/article/details/85051911