From 1cd34afb9ce7a75e7b6675952a3ad73decddabd4 Mon Sep 17 00:00:00 2001
From: stubbfel <stubbe@iit.tu-cottbus.de>
Date: Mon, 30 Sep 2013 10:39:46 +0200
Subject: [PATCH] add asserts

---
 .../CampusAppWP8/Pages/Campusmap/CampusMapPage.xaml.cs |  2 +-
 CampusAppWP8/CampusAppWP8/Utility/Utilities.cs         | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/CampusAppWP8/CampusAppWP8/Pages/Campusmap/CampusMapPage.xaml.cs b/CampusAppWP8/CampusAppWP8/Pages/Campusmap/CampusMapPage.xaml.cs
index 55392209..39877a04 100644
--- a/CampusAppWP8/CampusAppWP8/Pages/Campusmap/CampusMapPage.xaml.cs
+++ b/CampusAppWP8/CampusAppWP8/Pages/Campusmap/CampusMapPage.xaml.cs
@@ -651,7 +651,7 @@ namespace CampusAppWP8.Pages.Campusmap
         {
             string lat = App.LoadFromAppState<string>(Constants.GeoWatch_CurrentPosition_Lat);
             string log = App.LoadFromAppState<string>(Constants.GeoWatch_CurrentPosition_Long);
-            if (lat.Equals("0") && log.Equals("0"))
+            if (lat == null || log == null ||(lat.Equals("0") && log.Equals("0")))
             {
                 if (Settings.AppSetting.GeoWatchEnable)
                 {
diff --git a/CampusAppWP8/CampusAppWP8/Utility/Utilities.cs b/CampusAppWP8/CampusAppWP8/Utility/Utilities.cs
index c373f1ff..7d86ac7a 100644
--- a/CampusAppWP8/CampusAppWP8/Utility/Utilities.cs
+++ b/CampusAppWP8/CampusAppWP8/Utility/Utilities.cs
@@ -240,6 +240,16 @@ namespace CampusAppWP8.Utility
             return geoposition;
         }
 
+        /// <summary>
+        /// Method set current positon to Zero
+        /// </summary>
+        public static void SetGeoPositionToZero()
+        {
+            string time = DateTime.Now.Ticks.ToString(); 
+            App.SaveToAppState<string>(Constants.GeoWatch_CurrentPosition_Lat, "0");
+            App.SaveToAppState<string>(Constants.GeoWatch_CurrentPosition_Long, "0");
+            App.SaveToAppState<string>(Constants.GeoWatch_CurrentPosition_Time, time);
+        }
         /// <summary>
         /// Method determine and store the current position of the phone
         /// </summary>