}
}
- public bool IsStoredDataFresh()
- {
- // Check to see if the data is fresh.
- // This example uses 30 seconds as the valid time window to make it easy to test.
- // Real apps will use a larger window.
-
- // Check the time elapsed since data was last saved to isolated storage.
- TimeSpan TimeSinceLastSave = TimeSpan.FromSeconds(0);
- if (IsolatedStorageSettings.ApplicationSettings.Contains("DataLastSavedTime"))
- {
- DateTime dataLastSaveTime = (DateTime)IsolatedStorageSettings.ApplicationSettings["DataLastSavedTime"];
- TimeSinceLastSave = DateTime.Now - dataLastSaveTime;
- }
-
- if (TimeSinceLastSave.TotalSeconds < 30)
- {
- return true;
- }
-
- return false;
- }
-
- public WeatherData GetIsolatedStoredData()
- {
- string JSONRemoteCurrentWeather = null;
- string JSONRemoteForecastWeather = null;
- string city = null;
- string country = null;
-
- using (IsolatedStorageFile isoStore = IsolatedStorageFile.GetUserStoreForApplication())
- {
- if (isoStore.FileExists("JSONRemoteCurrentWeatherFile.txt") &&
- isoStore.FileExists("JSONRemoteForecastWeatherFile.txt") &&
- isoStore.FileExists("CityFile.txt") &&
- isoStore.FileExists("CountryFile.txt"))
- {
- using (IsolatedStorageFileStream file = isoStore.OpenFile("JSONRemoteCurrentWeatherFile.txt", FileMode.Open))
- using (StreamReader sr = new StreamReader(file))
- {
- // This method loads the data from isolated storage, if it is available.
- JSONRemoteCurrentWeather = sr.ReadLine();
- }
-
- using (IsolatedStorageFileStream file = isoStore.OpenFile("CityFile.txt", FileMode.Open))
- using (StreamReader sr = new StreamReader(file))
- {
- // This method loads the data from isolated storage, if it is available.
- city = sr.ReadLine();
- }
-
- using (IsolatedStorageFileStream file = isoStore.OpenFile("CountryFile.txt", FileMode.Open))
- using (StreamReader sr = new StreamReader(file))
- {
- // This method loads the data from isolated storage, if it is available.
- country = sr.ReadLine();
- }
- }
- }
-
- if (!string.IsNullOrEmpty(JSONRemoteCurrentWeather) && !string.IsNullOrEmpty(JSONRemoteForecastWeather))
- {
- // TODO: I am repeating this code 2 times. What could I do to improve it?
- var parser = new ServiceParser(new JsonParser());
- var weatherData = parser.WeatherDataParser(JSONRemoteForecastWeather, JSONRemoteCurrentWeather);
- weatherData.City = city ?? "";
- weatherData.Country = country ?? "";
-
- return weatherData;
- }
-
- return null;
- }
-
- // no way of moving temporary file atomically with IsolatedStorageFile. LINUX OWNS MICROSOFT.
- private void SaveDataToIsolatedStorage(string fileName, string value)
- {
- string pathToTemporaryFile = CreateTemporaryFile(fileName);
-
- SaveDataToTemporaryFile(pathToTemporaryFile, value);
-
- using (IsolatedStorageFile isoStore = IsolatedStorageFile.GetUserStoreForApplication())
- {
- // NO FUCKING WAY, MoveFile throws exception if destination file exists!!!!
- // And documentation doesn't say anything... ROFL
- // Linux OWNS Microsoft...
- // If there are corrupted files do not blame me.... Unbelievable....
- if (isoStore.FileExists(fileName))
- {
- isoStore.DeleteFile(fileName);
- }
- isoStore.MoveFile(pathToTemporaryFile, fileName);
- }
- }
-
- private string CreateTemporaryFile(string fileName)
- {
- using (IsolatedStorageFile isoStore = IsolatedStorageFile.GetUserStoreForApplication())
- {
- isoStore.CreateDirectory("tmp");
- }
-
- return Path.Combine("tmp", fileName);
- }
-
private void SaveDataToTemporaryFile(string pathToTemporaryFile, string value)
{
using (IsolatedStorageFile isoStore = IsolatedStorageFile.GetUserStoreForApplication())
// Código para ejecutar cuando la aplicación se desactiva (se envía a segundo plano)
// Este código no se ejecutará cuando la aplicación se cierre
- // TODO: no siempre pasa por aqui cuando se lanza una nueva ventana de la misma aplicación.
- // Y POR ESO HAY PROBLEMAS CON GetDataAsync PORQUE ESTO NO TIENE NADA DE NADA Y DEVUELVE NULL
- // Y SIEMPRE HACE UNA PETICIÓN AL SERVIDOR :(
private void Application_Deactivated(object sender, DeactivatedEventArgs e)
{
// If there is data in the application member variable...
if (!string.IsNullOrEmpty(weatherData.JSONRemoteCurrent) &&
!string.IsNullOrEmpty(weatherData.JSONRemoteForecast))
{
- // TODO: too many files? Remember there is a time limit for running this method!!! :/
-
// Store it in the State dictionary.
PhoneApplicationService.Current.State["JSONRemoteForecastWeather"] = weatherData.JSONRemoteForecast;
- // Also store it in isolated storage, in case the application is never reactivated.
- SaveDataToIsolatedStorage("JSONRemoteForecastWeatherFile.txt", weatherData.JSONRemoteForecast);
-
// Store it in the State dictionary.
PhoneApplicationService.Current.State["JSONRemoteCurrentWeather"] = weatherData.JSONRemoteCurrent;
- // Also store it in isolated storage, in case the application is never reactivated.
- SaveDataToIsolatedStorage("JSONRemoteCurrentWeatherFile.txt", weatherData.JSONRemoteCurrent);
-
// Store it in the State dictionary.
PhoneApplicationService.Current.State["City"] = weatherData.City;
- // Also store it in isolated storage, in case the application is never reactivated.
- SaveDataToIsolatedStorage("CityFile.txt", weatherData.City);
-
// Store it in the State dictionary.
PhoneApplicationService.Current.State["Country"] = weatherData.Country;
-
- // Also store it in isolated storage, in case the application is never reactivated.
- SaveDataToIsolatedStorage("CountryFile.txt", weatherData.Country);
-
- IsolatedStorageSettings.ApplicationSettings["DataLastSavedTime"] = DateTime.Now;
}
}
}
{
// Asegurarse de que el estado de la aplicación requerida persiste aquí.
// The application will not be tombstoned, so save only to isolated storage.
- var weatherData = ApplicationDataObject;
- if (weatherData != null)
- {
- if (!string.IsNullOrEmpty(weatherData.JSONRemoteForecast) &&
- !string.IsNullOrEmpty(weatherData.JSONRemoteCurrent))
- {
- // TODO: too many files? Remember there is a time limit for running this method!!! :/
-
- // Also store it in isolated storage, in case the application is never reactivated.
- SaveDataToIsolatedStorage("JSONRemoteForecastWeatherFile.txt", weatherData.JSONRemoteForecast);
-
- // Also store it in isolated storage, in case the application is never reactivated.
- SaveDataToIsolatedStorage("JSONRemoteCurrentWeatherFile.txt", weatherData.JSONRemoteCurrent);
-
- // Also store it in isolated storage, in case the application is never reactivated.
- SaveDataToIsolatedStorage("CityFile.txt", weatherData.City);
-
- // Also store it in isolated storage, in case the application is never reactivated.
- SaveDataToIsolatedStorage("CountryFile.txt", weatherData.Country);
-
- IsolatedStorageSettings.ApplicationSettings["DataLastSavedTime"] = DateTime.Now;
- }
- }
}
// Código para ejecutar si hay un error de navegación
// set the page's data object from the application member variable.
// TODO: I am setting and getting ApplicationDataObject from different threads!!!! What if I do not see its last value? Do I need synchronization? :/
WeatherData weatherData = (Application.Current as WeatherInformation.App).ApplicationDataObject;
- if (weatherData != null &&
- !locationItem.IsNewLocation &&
- // TODO: NO ESTOY USANDO GetIsolatedStoredData!!!!!! :(
- (Application.Current as WeatherInformation.App).IsStoredDataFresh())
+ if (!IsDataFresh(locationItem.LastRemoteDataUpdate) || weatherData == null)
{
- UpdateUI();
- }
- else
- {
- // Otherwise, call the method that loads data.
- await GetDataAsync(locationItem);
- // Call UpdateApplicationData on the UI thread.
- Dispatcher.BeginInvoke(() => UpdateUI());
+ // Load remote data (aynchronous way by means of async/await)
+
+ // Gets the data from the web.
+ // TODO: multiple threads writing/reading same data :(
+ (Application.Current as WeatherInformation.App).ApplicationDataObject =
+ await GetRemoteDataAsync(locationItem).ConfigureAwait(false);
+
+ using (var db = new LocationDataContext(LocationDataContext.DBConnectionString))
+ {
+ locationItem = db.Locations.Where(location => location.IsSelected).FirstOrDefault();
+ locationItem.LastRemoteDataUpdate = DateTime.UtcNow;
+ db.SubmitChanges();
+ }
}
+
+ // Call UpdateUI on the UI thread.
+ Dispatcher.BeginInvoke(() => UpdateUI());
}
void UpdateUI()
}
_mainViewModel.LoadData(weatherData);
-
- Location locationItem = null;
- using (var db = new LocationDataContext(LocationDataContext.DBConnectionString))
- {
- locationItem = db.Locations.Where(location => location.IsSelected).FirstOrDefault();
- locationItem.IsNewLocation = false;
- db.SubmitChanges();
- }
}
}
NavigationService.Navigate(new Uri(uri, UriKind.Relative));
}
- async private Task GetDataAsync(Location locationItem)
- {
- // Gets the data from the web.
- // TODO: multiple threads writing/reading same data :(
- (Application.Current as WeatherInformation.App).ApplicationDataObject = await LoadDataAsync(locationItem);
- }
-
/// <summary>
/// Retrieve remote weather data.
/// </summary>
- async public Task<WeatherData> LoadDataAsync(Location locationItem)
+ async public Task<WeatherData> GetRemoteDataAsync(Location locationItem)
{
double latitude = locationItem.Latitude;
double longitude = locationItem.Longitude;
string formattedForecastURL = String.Format(
CultureInfo.InvariantCulture, AppResources.URIAPIOpenWeatherMapForecast,
AppResources.APIVersionOpenWeatherMap, latitude, longitude, resultsNumber);
- string JSONRemoteForecastWeather = await httpClient.GetWeatherDataAsync(formattedForecastURL);
+ string JSONRemoteForecastWeather = await httpClient.GetWeatherDataAsync(formattedForecastURL).ConfigureAwait(false);
string formattedCurrentURL = String.Format(
CultureInfo.InvariantCulture, AppResources.URIAPIOpenWeatherMapCurrent,
AppResources.APIVersionOpenWeatherMap, latitude, longitude, resultsNumber);
- string JSONRemoteCurrentWeather = await httpClient.GetWeatherDataAsync(formattedCurrentURL);
+ string JSONRemoteCurrentWeather = await httpClient.GetWeatherDataAsync(formattedCurrentURL).ConfigureAwait(false);
var parser = new ServiceParser(new JsonParser());
var weatherData = parser.WeatherDataParser(JSONRemoteForecastWeather, JSONRemoteCurrentWeather);
return weatherData;
}
+ private bool IsDataFresh(DateTime? lastUpdate)
+ {
+ if (lastUpdate == null)
+ {
+ return false;
+ }
+
+ // Check the time elapsed since data was last saved to isolated storage.
+ TimeSpan TimeSinceLastSave = DateTime.UtcNow - lastUpdate.Value;
+
+ if (TimeSinceLastSave.TotalSeconds < 30)
+ {
+ return true;
+ }
+
+ return false;
+ }
+
private void Location_Click(object sender, EventArgs e)
{
NavigationService.Navigate(new Uri("/MapPage.xaml", UriKind.Relative));
projects / CSharpForFun / .git / commitdiff