Use UnityWebRequest instead of WWW

Signed-off-by: Kunlin Yu <yukunlin@syriusrobotics.com>

Author: kunlinyu

Assets/StandaloneFileBrowser/Sample/CanvasSampleOpenFileImage.cs

@@ -5,6 +5,7 @@
 using UnityEngine;
 using UnityEngine.UI;
 using UnityEngine.EventSystems;
+using UnityEngine.Networking;
 using SFB;
 
 [RequireComponent(typeof(Button))]
@@ -46,8 +47,16 @@ private void OnClick() {
 #endif
 
     private IEnumerator OutputRoutine(string url) {
-        var loader = new WWW(url);
-        yield return loader;
-        output.texture = loader.texture;
+        UnityWebRequest www = UnityWebRequestTexture.GetTexture(url);
+        yield return www.SendWebRequest();
+
+        if (www.result != UnityWebRequest.Result.Success)
+        {
+            Debug.LogError(www.error);
+        }
+        else
+        {
+            output.texture = ((DownloadHandlerTexture)www.downloadHandler).texture;
+        }
     }
 }

Assets/StandaloneFileBrowser/Sample/CanvasSampleOpenFileText.cs

@@ -5,6 +5,7 @@
 using UnityEngine;
 using UnityEngine.UI;
 using UnityEngine.EventSystems;
+using UnityEngine.Networking;
 using SFB;
 
 [RequireComponent(typeof(Button))]
@@ -46,8 +47,16 @@ private void OnClick() {
 #endif
 
     private IEnumerator OutputRoutine(string url) {
-        var loader = new WWW(url);
-        yield return loader;
-        output.text = loader.text;
+        UnityWebRequest www = UnityWebRequest.Get(url);
+        yield return www.SendWebRequest();
+
+        if (www.result != UnityWebRequest.Result.Success)
+        {
+            Debug.LogError(www.error);
+        }
+        else
+        {
+            output.text = www.downloadHandler.text;
+        }
     }
 }

Assets/StandaloneFileBrowser/Sample/CanvasSampleOpenFileTextMultiple.cs

@@ -1,10 +1,9 @@
-using System.Text;
 using System.Collections;
 using System.Collections.Generic;
-using System.Runtime.InteropServices;
 using UnityEngine;
 using UnityEngine.UI;
 using UnityEngine.EventSystems;
+using UnityEngine.Networking;
 using SFB;
 
 [RequireComponent(typeof(Button))]
@@ -52,10 +51,19 @@ private void OnClick() {
 
     private IEnumerator OutputRoutine(string[] urlArr) {
         var outputText = "";
-        for (int i = 0; i < urlArr.Length; i++) {
-            var loader = new WWW(urlArr[i]);
-            yield return loader;
-            outputText += loader.text;
+        for (int i = 0; i < urlArr.Length; i++)
+        {
+            UnityWebRequest www = UnityWebRequest.Get(urlArr[i]);
+            yield return www.SendWebRequest();
+
+            if (www.result != UnityWebRequest.Result.Success)
+            {
+                Debug.LogError(www.error);
+            }
+            else
+            {
+                outputText += www.downloadHandler.text;
+            }
         }
         output.text = outputText;
     }