app center；增加發送ping的秒

Assets/AppCenter/Plugins/Android/Utility/AndroidUtility.cs

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+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT license.
+
+using UnityEngine;
+
+namespace Assets.AppCenter.Plugins.Android.Utility
+{
+    class AndroidUtility
+    {
+        private static AndroidJavaObject _context;
+        private const string PREFS_NAME = "AppCenterUserPrefs";
+
+        public static AndroidJavaObject GetAndroidContext()
+        {
+            if (_context != null)
+            {
+                return _context;
+            }
+            var unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
+            var activity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
+            _context = activity.Call<AndroidJavaObject>("getApplicationContext");
+            return _context;
+        }
+
+        public static void SetPreferenceInt(string prefKey, int prefValue)
+        {
+            AndroidJavaObject context = GetAndroidContext();
+            AndroidJavaObject sharedPreferences = context.Call<AndroidJavaObject>("getSharedPreferences", new object[] { PREFS_NAME, 0 });
+            AndroidJavaObject editor = sharedPreferences.Call<AndroidJavaObject>("edit");
+            editor = editor.Call<AndroidJavaObject>("putInt", new object[] { prefKey, prefValue });
+            editor.Call("apply");
+        }
+
+        public static void SetPreferenceString(string prefKey, string prefValue)
+        {
+            AndroidJavaObject context = GetAndroidContext();
+            AndroidJavaObject sharedPreferences = context.Call<AndroidJavaObject>("getSharedPreferences", new object[] { PREFS_NAME, 0 });
+            AndroidJavaObject editor = sharedPreferences.Call<AndroidJavaObject>("edit");
+            editor = editor.Call<AndroidJavaObject>("putString", new object[] { prefKey, prefValue });
+            editor.Call("apply");
+        }
+    }
+}