這幾天一直作優化的事情，對於資源這一塊優化，資源異步加載做爲首選，因2018以後版本中棄用了WWW請求，因此今天咱們以UnityWebRequest 請求方式介紹，基本上是一個整理。json
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Networking;
public class ResourceLoad : MonoBehaviour
{
/// <summary>
/// 單例
/// </summary>
private static ResourceLoad _instance = null;
public static ResourceLoad Instance {
get {
if(null == _instance)
{
GameObject singleton = (GameObject)UnityEngine.Object.FindObjectOfType(typeof(GameObject));
if(null == singleton)
{
singleton = new GameObject("Singleton");
DontDestroyOnLoad(singleton);
}
_instance = singleton.GetComponent<ResourceLoad>();
if (null == _instance)
{
_instance = singleton.AddComponent<ResourceLoad>();
}
}
return _instance;
}
}
/*UnityWebRequests處理與Web服務器的HTTP通訊流。
* 其餘對象-特別是DownloadHandler和UploadHandler-分別控制數據的下載和上傳。
* 爲了方便起見，提供了一組靜態函數。這些將返回爲許多常見用例正確配置的UnityWebRequest對象。請參閱： Get，Post，Put，GetTexture。
* 能夠對下面屬性瞭解
* responseCode 服務器返回的數字HTTP響應代碼，例如200、404或500。（只讀）
* timeout 設置UnityWebRequest以嘗試在超時秒數過去後停止。
* downloadProgress 返回介於0.0和1.0之間的浮點值，指示從服務器下載正文數據的進度。（只讀）
* 返回介於0.0和1.0之間的浮點值，指示將主體數據上傳到服務器的進度。
* useHttpContinue 肯定此UnityWebRequest是否在其傳出請求標頭中包含Expect：100-Continue。（默認值：true）。
* SendWebRequest 開始與遠程服務器通訊。
* SetRequestHeader 將HTTP請求標頭設置爲自定義值。
* Head Creates a UnityWebRequest configured to send a HTTP HEAD request.
*/
#region--//對請求分裝
/// <summary>
/// get請求
/// </summary>
/// <param name="url"></param>
/// <param name="actionResult"></param>
public void WebquestGet(string url, System.Action<bool, string> actionResult)
{
StartCoroutine(_Get(url, actionResult));
}
/// <summary>
/// Sprite請求
/// </summary>
/// <param name="url"></param>
/// <param name="actionResult"></param>
public void WebquestGet(string url, System.Action<bool, string, Sprite> actionResult)
{
StartCoroutine(_GetTexture(url, actionResult));
}
// .
// .
// .
// . 省略
#endregion
#region --- 網絡請求
/// <summary>
/// GET請求
/// </summary>
/// <param name="url">請求地址</param>
/// <param name="action">請求發起後處理回調結果的委託</param>
/// <returns></returns>
IEnumerator _Get(string url, System.Action<bool, string> actionResult)
{
using (UnityWebRequest quest = UnityWebRequest.Get(url))
{
yield return quest.SendWebRequest();
string msg = "";
if (!(quest.isNetworkError || quest.isHttpError))
{
msg = quest.downloadHandler.text;
}
else
{
msg = quest.error;
}
if (actionResult != null)
{
actionResult.Invoke(quest.isHttpError, msg);
}
}
}
/// <summary>
/// 請求文件byte
/// </summary>
/// <param name="url"></param>
/// <param name="action">請求發起後處理回調結果的委託,處理請求結果的byte數組</param>
/// <returns></returns>
IEnumerator _GetBytes(string url, System.Action<bool, string, byte[]> actionResult)
{
using (UnityWebRequest quest = new UnityWebRequest(url))
{
DownloadHandlerFile downloadFile = new DownloadHandlerFile(url);
quest.downloadHandler = downloadFile;
yield return quest.SendWebRequest();
byte[] bytes = null;
string text = null;
if (!(quest.isNetworkError || quest.isHttpError))
{
bytes = downloadFile.data;
}
else
{
text = quest.error;
}
if (actionResult != null)
{
actionResult.Invoke((quest.isNetworkError || quest.isHttpError), text, bytes);
}
}
}
/// <summary>
/// 請求Sprite和圖片
/// </summary>
/// <param name="url">圖片地址'</param>
/// <param name="action">請求發起後處理回調結果的委託,處理請求結果的圖片</param>
/// <returns></returns>
IEnumerator _GetTexture(string url, System.Action<bool, string, Sprite> actionResult)
{
using (UnityWebRequest quest = UnityWebRequestTexture.GetTexture(url)) // 或者直接用 new UnityWebRequest(url)
{
//DownloadHandlerTexture downloadTexture = new DownloadHandlerTexture(true);
//quest.downloadHandler = downloadTexture;
yield return quest.SendWebRequest();
string text = null;
Sprite sprite = null;
if (!(quest.isNetworkError || quest.isHttpError))
{
Texture2D texture = DownloadHandlerTexture.GetContent(quest); //downloadTexture.texture;
sprite = Sprite.Create(texture, new Rect(0, 0, texture.width, texture.height), new Vector2(0.5f, 0.5f));
}
else
{
text = quest.error;
}
if (actionResult != null)
{
actionResult.Invoke((quest.isNetworkError || quest.isHttpError), text, sprite);
}
}
}
/// <summary>
/// 請求服務器地址上的音效
/// </summary>
/// <param name="url">沒有音頻地址</param>
/// <param name="actionResult">請求發起後處理回調結果的委託,處理請求結果的MovieTexture</param>
/// <param name="audioType">音效類型</param>
/// <returns></returns>
IEnumerator _GetAudioClip(string url, System.Action<bool, string, AudioClip> actionResult, AudioType audioType = AudioType.WAV)
{
using (UnityWebRequest quest = UnityWebRequest.Get(url))
{
DownloadHandlerAudioClip downloadAudioClip = new DownloadHandlerAudioClip(url, audioType);
quest.downloadHandler = downloadAudioClip;
yield return quest.SendWebRequest();
AudioClip audioClip = null;
string text = null;
if (!(quest.isNetworkError || quest.isHttpError))
{
audioClip = downloadAudioClip.audioClip;
}
else
{
text = quest.error;
}
if (actionResult != null)
{
actionResult.Invoke((quest.isNetworkError || quest.isHttpError), text, audioClip);
}
}
}
/// <summary>
/// 向服務器提交post請求
/// </summary>
/// <param name="url">服務器請求目標地址</param>
/// <param name="formData">form表單參數</param>
/// <returns></returns>
IEnumerator _Post(string url, string formData, System.Action<bool, string> actionResult)
{
using (UnityWebRequest quest = UnityWebRequest.Post(url, formData))
{
//發送數據
setWebRequest(quest, formData);
yield return quest.SendWebRequest();
string text = "";
if (!(quest.isNetworkError || quest.isHttpError))
{
text = quest.downloadHandler.text;
}
else
{
text = quest.error;
}
if (actionResult != null)
{
actionResult.Invoke(quest.isHttpError, text);
}
}
}
/// <summary>
/// 設置表頭和發送信息
/// </summary>
/// <param name="quest"></param>
/// <param name="info"></param>
void setWebRequest(UnityWebRequest quest, string info)
{
//設置發送表頭信息
quest.SetRequestHeader("Content-Type", "application/json");
//設置發送的信息
Object objectInfo = null;//(設置info 類結構對象信息)
string jsonId = JsonUtility.ToJson(objectInfo);
byte[] wForm = System.Text.Encoding.UTF8.GetBytes(jsonId);
quest.uploadHandler = new UploadHandlerRaw(wForm);
quest.downloadHandler = new DownloadHandlerBuffer();
//或者
//List<IMultipartFormSection> formData = new List<IMultipartFormSection>();
//formData.Add(new MultipartFormDataSection("field1=foo&field2=bar"));
//formData.Add(new MultipartFormFileSection("my file data", "myfile.txt"));
}
#endregion
}