Improve images caching

Improve error reporting
Implemented IsolatedStorageExplorer feature

main/Libs/WPImageCaching/ImageDownloadHelper.cs

@@ -59,10 +59,17 @@ namespace WPImageCaching
             try
             {
                 var response = (HttpWebResponse)transfer.WebRequest.EndGetResponse(result);
+                string newKey = transfer.WebRequest.RequestUri.ToString();
 
                 //Bild wurde nicht geändert seit dem letzten Aufruf
                 if (response.StatusCode == HttpStatusCode.NotModified)
                 {
+                    if (ImageCache.imageCache.ContainsKey(newKey))
+                    {
+                        ImageCache.imageCache[newKey].Expiration = (response.Headers["Expires"] != null) ? DateTime.Parse(response.Headers["Expires"]) : DateTime.Now.AddDays(EXPIRATIONDAYS);
+                        //save updated
+                        ImageCache.SaveCachedImageInfo();
+                    }
                     Deployment.Current.Dispatcher.BeginInvoke(() =>
                                                                   {
                                                                       using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication())
@@ -80,16 +87,21 @@ namespace WPImageCaching
                 }
                 lock (ImageCache._lock)
                 {
-                    string newKey = transfer.WebRequest.RequestUri.ToString();
                     if (ImageCache.imageCache.ContainsKey(newKey))
+                    {
+                        bool isExpired = (DateTime.Compare(DateTime.Now, ImageCache.imageCache[newKey].Expiration) >= 0);
+                        if (!isExpired)
                         {
                             //Setzen des Bildes
                             Deployment.Current.Dispatcher.BeginInvoke(
                                 () =>
                                     {
-                                using (IsolatedStorageFile ifs = IsolatedStorageFile.GetUserStoreForApplication())
+                                        using (
+                                            IsolatedStorageFile ifs = IsolatedStorageFile.GetUserStoreForApplication())
                                         {
-                                    using (IsolatedStorageFileStream fs = ifs.OpenFile(transfer.Item.LocalFilename, FileMode.Open))
+                                            using (
+                                                IsolatedStorageFileStream fs = ifs.OpenFile(
+                                                    transfer.Item.LocalFilename, FileMode.Open))
                                             {
                                                 transfer.Image.SetSource(fs);
                                             }
@@ -97,6 +109,19 @@ namespace WPImageCaching
                                     });
                             return;
                         }
+                        else
+                        {
+                            if (IsolatedStorageFile.GetUserStoreForApplication().FileExists(ImageCache.imageCache[newKey].LocalFilename))
+                            {
+                                //remove old image
+                                IsolatedStorageFile.GetUserStoreForApplication().DeleteFile(ImageCache.imageCache[newKey].LocalFilename);
+                                //
+                                ImageCache.imageCache.Remove(newKey);
+                                //Speichern der Bildinformationen
+                                ImageCache.SaveCachedImageInfo();
+                            }
+                        }
+                    }
                     //Hat das Bild eine neue ID?
                     if (response.Headers["ETag"] != null)
                     {

main/MyFriendsAround.WP7/App.xaml.cs

@@ -16,6 +16,7 @@ using System.Windows.Navigation;
 using System.Windows.Shapes;
 using Microsoft.Phone;
 using Microsoft.Phone.Controls;
+using Microsoft.Phone.Net.NetworkInformation;
 using Microsoft.Phone.Shell;
 using MyFriendsAround.WP7.Model;
 using MyFriendsAround.WP7.ViewModel;
@@ -53,6 +54,21 @@ namespace MyFriendsAround.WP7
             //register ViewModelLocator
             Container.Instance.RegisterInstance(typeof(ViewModelLocator), "ViewModelLocator");
             Container.Instance.RegisterInstance<ILocationService>(new LocationService(), "LocationService");
+
+            NetworkDetector.Instance.OnNetworkOFF += new EventHandler<NetworkAvailableEventArgs>(Instance_OnNetworkOFF);
+            NetworkDetector.Instance.OnNetworkON += new EventHandler<NetworkAvailableEventArgs>(Instance_OnNetworkON);
+        }
+
+        void Instance_OnNetworkON(object sender, NetworkAvailableEventArgs e)
+        {
+            ViewModelLocator locator = Container.Instance.Resolve<ViewModelLocator>("ViewModelLocator");
+            locator.Main.IsBusy = true;
+        }
+
+        void Instance_OnNetworkOFF(object sender, NetworkAvailableEventArgs e)
+        {
+            ViewModelLocator locator = Container.Instance.Resolve<ViewModelLocator>("ViewModelLocator");
+            locator.Main.IsBusy = false;
         }
 
 
@@ -68,6 +84,9 @@ namespace MyFriendsAround.WP7
         // This code will not execute when the application is reactivated
         private void Application_Launching(object sender, LaunchingEventArgs e)
         {
+#if GPS_EMULATOR
+            IsolatedStorageExplorer.Explorer.Start("localhost");
+#endif
             DispatcherHelper.Initialize();
             LoadModel();
         }
@@ -76,6 +95,9 @@ namespace MyFriendsAround.WP7
         // This code will not execute when the application is first launched
         private void Application_Activated(object sender, ActivatedEventArgs e)
         {
+#if GPS_EMULATOR
+            IsolatedStorageExplorer.Explorer.RestoreFromTombstone();
+#endif
             DispatcherHelper.Initialize();
             LoadModel();
         }
@@ -104,15 +126,16 @@ namespace MyFriendsAround.WP7
             MainViewModel mainModel = this.RetrieveFromIsolatedStorage<MainViewModel>();
             if (mainModel != null)
             {
-                mainModel.IsBusy = false;
-                mainModel.GpsLocation = Location.Unknown;
-                mainModel.GpsStatus = GeoPositionStatus.NoData;
                 Container.Instance.RegisterInstance<MainViewModel>(mainModel, Constants.VM_MAIN);
             }
             else
             {
                 Container.Instance.RegisterInstance<MainViewModel>(new MainViewModel(), Constants.VM_MAIN);
             }
+            Container.Instance.Resolve<ViewModelLocator>("ViewModelLocator").Main.GpsLocation = Location.Unknown;
+            Container.Instance.Resolve<ViewModelLocator>("ViewModelLocator").Main.GpsStatus = GeoPositionStatus.NoData;
+            Container.Instance.Resolve<ViewModelLocator>("ViewModelLocator").Main.RefreshMyLocationPushPins();
+            Container.Instance.Resolve<ViewModelLocator>("ViewModelLocator").Main.IsBusy = false; //(NetworkDetector.Instance.GetCurrentNetworkType() == NetworkInterfaceType.None) || !NetworkDetector.Instance.GetZuneStatus();
             //
             SettingsViewModel settingsModel = this.RetrieveFromIsolatedStorage<SettingsViewModel>();
             if (settingsModel != null)
@@ -138,7 +161,14 @@ namespace MyFriendsAround.WP7
         void RootFrame_NavigationFailed(object sender, NavigationFailedEventArgs e)
         {
             //LittleWatson.ReportException(e.Exception, string.Empty);
+            if (e.Exception is WebException)
+            {
+                MessageBox.Show(e.Exception.Message);
+            }
+            else
+            {
                 ShowException(e.Exception);
+            }
 
             if (System.Diagnostics.Debugger.IsAttached)
             {
@@ -150,8 +180,20 @@ namespace MyFriendsAround.WP7
         // Code to execute on Unhandled Exceptions
         private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
         {
+            #region Error Logging
+            
             //LittleWatson.ReportException(e.ExceptionObject, string.Empty);
+            if (e.ExceptionObject is WebException)
+            {
+                MessageBox.Show(e.ExceptionObject.Message);
+            }
+            else
+            {
                 ShowException(e.ExceptionObject);
+            }
+
+            #endregion
+
 
             if (System.Diagnostics.Debugger.IsAttached)
             {

main/MyFriendsAround.WP7/MyFriendsAround.WP7.csproj

@@ -102,6 +102,9 @@
     <Reference Include="ICSharpCode.SharpZipLib.WindowsPhone">
       <HintPath>..\Libs\Hammock-Binaries\.NET 4.0\Windows Phone 7\ICSharpCode.SharpZipLib.WindowsPhone.dll</HintPath>
     </Reference>
+    <Reference Include="IsolatedStorageExplorer, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\Libs\WP7 Isolated Storage Explorer\Library\IsolatedStorageExplorer.dll</HintPath>
+    </Reference>
     <Reference Include="Microsoft.CSharp">
       <HintPath>..\packages\Hammock.1.2.1\lib\sl4\Microsoft.CSharp.dll</HintPath>
     </Reference>

main/MyFriendsAround.WP7/Service/ServiceAgent.cs

@@ -52,7 +52,7 @@ namespace MyFriendsAround.WP7.Service
             }
             catch (Exception ex)
             {
-                friendscallback.Invoke(null, new FriendsListEventArgs() { Friends = null, Error = ex });
+                friendscallback.Invoke(null, new FriendsListEventArgs() { Friends = null, Error = new WebException("Communication Error!", ex) });
             }
             
         }
@@ -66,7 +66,7 @@ namespace MyFriendsAround.WP7.Service
             }
             else
             {
-                friendscallback.Invoke(null, new FriendsListEventArgs() { Friends = null, Error = new Exception("Communication Error!") });
+                friendscallback.Invoke(null, new FriendsListEventArgs() { Friends = null, Error = new WebException("Communication Error!") });
             }
         }
 
@@ -102,7 +102,7 @@ namespace MyFriendsAround.WP7.Service
             }
             catch (Exception ex)
             {
-                publishlocationcallback.Invoke(null, new PublishLocationEventArgs() { IsSuccess = false, Error = ex });
+                publishlocationcallback.Invoke(null, new PublishLocationEventArgs() { IsSuccess = false, Error = new WebException("Communication Error!", ex) });
             }
             
         }
@@ -116,7 +116,7 @@ namespace MyFriendsAround.WP7.Service
             }
             else
             {
-                publishlocationcallback.Invoke(null, new PublishLocationEventArgs() { IsSuccess = false, Error = new Exception("Communication Error!")});
+                publishlocationcallback.Invoke(null, new PublishLocationEventArgs() { IsSuccess = false, Error = new WebException("Communication Error!") });
             }
         }
 
@@ -155,7 +155,7 @@ namespace MyFriendsAround.WP7.Service
             }
             catch (Exception ex)
             {
-                publishmypicturecallback.Invoke(null, new PublishLocationEventArgs() { IsSuccess = false, Error = ex });
+                publishmypicturecallback.Invoke(null, new PublishLocationEventArgs() { IsSuccess = false, Error = new WebException("Communication Error!", ex) });
             }
 
         }
@@ -169,7 +169,7 @@ namespace MyFriendsAround.WP7.Service
             }
             else
             {
-                publishmypicturecallback.Invoke(null, new PublishLocationEventArgs() { IsSuccess = false, Error = new Exception("Communication Error!") });
+                publishmypicturecallback.Invoke(null, new PublishLocationEventArgs() { IsSuccess = false, Error = new WebException("Communication Error!") });
             }
         }
 

main/MyFriendsAround.WP7/ViewModel/MainViewModel.cs

@@ -677,7 +677,14 @@ namespace MyFriendsAround.WP7.ViewModel
             if (e.Location != Location.Unknown)
             {
                 GpsLocation = e.Location;
+                RefreshMyLocationPushPins();
+            }
 
+            System.Diagnostics.Debug.WriteLine("watcher_PositionChanged + " + DateTime.Now.Second);
+        }
+
+        public void RefreshMyLocationPushPins()
+        {
             if (LastBoundRect != null && LastBoundRect.Intersects(new LocationRect(
                     new GeoCoordinate(GpsLocation.Latitude, GpsLocation.Longitude),
                     .5,
@@ -697,8 +704,6 @@ namespace MyFriendsAround.WP7.ViewModel
             }
         }
 
-            System.Diagnostics.Debug.WriteLine("watcher_PositionChanged + " + DateTime.Now.Second);
-        }
 
         private void ShowMyLocation()
         {
@@ -936,9 +941,16 @@ namespace MyFriendsAround.WP7.ViewModel
                 DispatcherHelper.CheckBeginInvokeOnUI(() =>
                     {
                         IsBusy = false;
+                        if (args.Error is WebException)
+                        {
+                            MessageBox.Show(args.Error.Message);
+                        }
+                        else
+                        {
                             var exception = new ExceptionPrompt();
                             exception.Show(args.Error);
                         }
+                    }
                 );
             }
         }
@@ -950,8 +962,15 @@ namespace MyFriendsAround.WP7.ViewModel
                 DispatcherHelper.CheckBeginInvokeOnUI(() =>
                 {
                     IsBusy = false;
+                    if (args.Error is WebException)
+                    {
+                        MessageBox.Show(args.Error.Message);   
+                    }
+                    else
+                    {
                         var exception = new ExceptionPrompt();
                         exception.Show(args.Error);    
+                    }
                 });
             }
             else
@@ -997,8 +1016,15 @@ namespace MyFriendsAround.WP7.ViewModel
                 DispatcherHelper.CheckBeginInvokeOnUI(() =>
                 {
                     IsBusy = false;
+                    if (args.Error is WebException)
+                    {
+                        MessageBox.Show(args.Error.Message);
+                    }
+                    else
+                    {
                         var exception = new ExceptionPrompt();
                         exception.Show(args.Error);
+                    }
                 });
             }
             else

main/MyFriendsAround.sln

@@ -113,7 +113,6 @@ Global
 		{67CBC824-A49E-4E9B-A947-360F3DFE65C3}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{67CBC824-A49E-4E9B-A947-360F3DFE65C3}.Debug|Mixed Platforms.ActiveCfg = Debug|Any CPU
 		{67CBC824-A49E-4E9B-A947-360F3DFE65C3}.Debug|Mixed Platforms.Build.0 = Debug|Any CPU
-		{67CBC824-A49E-4E9B-A947-360F3DFE65C3}.Debug|Mixed Platforms.Deploy.0 = Debug|Any CPU
 		{67CBC824-A49E-4E9B-A947-360F3DFE65C3}.Debug|x86.ActiveCfg = Debug|Any CPU
 		{67CBC824-A49E-4E9B-A947-360F3DFE65C3}.GPS_EMULATOR|Any CPU.ActiveCfg = GPS_EMULATOR|Any CPU
 		{67CBC824-A49E-4E9B-A947-360F3DFE65C3}.GPS_EMULATOR|Any CPU.Build.0 = GPS_EMULATOR|Any CPU
@@ -227,7 +226,6 @@ Global
 		{BF7316A8-A2C5-4176-8D7F-672AD12F474D}.Debug|Any CPU.Deploy.0 = Debug|Any CPU
 		{BF7316A8-A2C5-4176-8D7F-672AD12F474D}.Debug|Mixed Platforms.ActiveCfg = Debug|Any CPU
 		{BF7316A8-A2C5-4176-8D7F-672AD12F474D}.Debug|Mixed Platforms.Build.0 = Debug|Any CPU
-		{BF7316A8-A2C5-4176-8D7F-672AD12F474D}.Debug|Mixed Platforms.Deploy.0 = Debug|Any CPU
 		{BF7316A8-A2C5-4176-8D7F-672AD12F474D}.Debug|x86.ActiveCfg = Debug|Any CPU
 		{BF7316A8-A2C5-4176-8D7F-672AD12F474D}.GPS_EMULATOR|Any CPU.ActiveCfg = GPS_EMULATOR|Any CPU
 		{BF7316A8-A2C5-4176-8D7F-672AD12F474D}.GPS_EMULATOR|Any CPU.Build.0 = GPS_EMULATOR|Any CPU