modifieid SampleWebView.cs to save/restore the session cookie.

Author: KojiNakamaru

sample/Assets/Scripts/SampleWebView.cs

@@ -57,6 +57,9 @@ IEnumerator Start()
             },
             ld: (msg) =>
             {
+#if UNITY_IPHONE
+                PlayerPrefs.SetString("sessionCookie", webViewObject.GetSessionCookieFromServer());
+#endif
                 Debug.Log(string.Format("CallOnLoaded[{0}]", msg));
 #if UNITY_EDITOR_OSX || !UNITY_ANDROID
                 // NOTE: depending on the situation, you might prefer
@@ -104,6 +107,12 @@ IEnumerator Start()
             },
             //ua: "custom user agent string",
             enableWKWebView: true);
+#if UNITY_IPHONE
+        if (!string.IsNullOrEmpty(PlayerPrefs.GetString("sessionCookie", ""))) {
+            webViewObject.SetSessionCookieFromClient(PlayerPrefs.GetString("sessionCookie", ""));
+        }
+#endif
+
 #if UNITY_EDITOR_OSX || UNITY_STANDALONE_OSX
         webViewObject.bitmapRefreshCycle = 1;
 #endif