From 4fb2f5b06dfbc5598b5b6bb704e8ef3e1cb08149 Mon Sep 17 00:00:00 2001
From: stubbfel <stubbe@iit.tu-cottbus.de>
Date: Tue, 15 Oct 2013 15:18:27 +0200
Subject: [PATCH] fix #243

---
 CampusAppWP8/CampusAppWP8/Pages/Dev/QRScanner.xaml.cs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/CampusAppWP8/CampusAppWP8/Pages/Dev/QRScanner.xaml.cs b/CampusAppWP8/CampusAppWP8/Pages/Dev/QRScanner.xaml.cs
index 00fc417d..d0740f3a 100644
--- a/CampusAppWP8/CampusAppWP8/Pages/Dev/QRScanner.xaml.cs
+++ b/CampusAppWP8/CampusAppWP8/Pages/Dev/QRScanner.xaml.cs
@@ -27,6 +27,7 @@ namespace CampusAppWP8.Pages.Dev
     using Microsoft.Devices;
     using Microsoft.Phone.Controls;
     using ZXing;
+    using System.Windows.Navigation;
 
     /// <summary> QR Code scanner. </summary>
     /// <remarks> fiedlchr, 15.10.2013. </remarks>
@@ -86,6 +87,11 @@ namespace CampusAppWP8.Pages.Dev
                     this.resultAppStoreKey = NavigationContext.QueryString[Constants.ParamQRResultKey];
                 }
 
+                if (e.NavigationMode == NavigationMode.Back)
+                {
+                    this.captureThreadExit = false;
+                }
+
                 this.isInAutofocus = true;
                 this.cam = new PhotoCamera(CameraType.Primary);
                 this.cam.Initialized += new EventHandler<CameraOperationCompletedEventArgs>(this.Cam_Initialized);
@@ -93,6 +99,8 @@ namespace CampusAppWP8.Pages.Dev
                 this.bit = new WriteableBitmap((int)this.cam.PreviewResolution.Width, (int)this.cam.PreviewResolution.Height);
 
                 this.camViewBrush.SetSource(this.cam);
+
+
             }
             else
             {