/// <summary>
/// Initializes sensors
/// </summary>
/// <returns>Asynchronous task</returns>
private async Task InitializeAsync()
{
if (await CallSensorcoreApiAsync(async() => { _placeMonitor = await Monitor.GetDefaultAsync(); }))
{
// Update list of known places
await UpdateKnownPlacesAsync(null);
HomeButton.IsEnabled = true;
WorkButton.IsEnabled = true;
FrequentButton.IsEnabled = true;
CurrentButton.IsEnabled = true;
_placeHistory = await GetPlacesHistoryAsync();
}
else
{
Application.Current.Exit();
return;
}
// Init Geolocator
try
{
// Get a geolocator object
_geoLocator = new Geolocator();
// Get cancellation token
_cancellationTokenSource = new CancellationTokenSource();
CancellationToken token = _cancellationTokenSource.Token;
Geoposition geoposition = await _geoLocator.GetGeopositionAsync().AsTask(token);
_currentLocation = new Geopoint(new BasicGeoposition()
{
Latitude = geoposition.Coordinate.Point.Position.Latitude,
Longitude = geoposition.Coordinate.Point.Position.Longitude
});
// Focus on the current location
CurrentButton_Click(this, null);
}
finally
{
_cancellationTokenSource = null;
}
}
/// <summary>
/// Initialize SensorCore and find the current position
/// </summary>
private async void InitCore()
{
if (_monitor == null)
{
// This is not implemented by the simulator, uncomment for the PlaceMonitor
if (await Monitor.IsSupportedAsync())
{
// Init SensorCore
if (await CallSensorcoreApiAsync(async() => { _monitor = await Monitor.GetDefaultAsync(); }))
{
Debug.WriteLine("PlaceMonitor initialized.");
// Update list of known places
await UpdateKnownPlacesAsync();
HomeButton.IsEnabled = true;
WorkButton.IsEnabled = true;
FrequentButton.IsEnabled = true;
CurrentButton.IsEnabled = true;
}
else
{
return;
}
}
else
{
var loader = new Windows.ApplicationModel.Resources.ResourceLoader();
MessageDialog dialog = new MessageDialog(loader.GetString("NoMotionDataSupport/Text"), loader.GetString("Information/Text"));
dialog.Commands.Add(new UICommand(loader.GetString("OkButton/Text")));
await dialog.ShowAsync();
new System.Threading.ManualResetEvent(false).WaitOne(500);
Application.Current.Exit();
}
// Init Geolocator
try
{
_accessInfo = DeviceAccessInformation.CreateFromDeviceClass(DeviceClass.Location);
_accessInfo.AccessChanged += OnAccessChanged;
// Get a geolocator object
_geolocator = new Geolocator();
// Get cancellation token
_cancellationTokenSource = new CancellationTokenSource();
CancellationToken token = _cancellationTokenSource.Token;
Geoposition geoposition = await _geolocator.GetGeopositionAsync().AsTask(token);
_currentLocation = new Geopoint(new BasicGeoposition()
{
Latitude = geoposition.Coordinate.Point.Position.Latitude,
Longitude = geoposition.Coordinate.Point.Position.Longitude
});
// Focus on the current location
OnCurrentClicked(this, null);
}
catch (UnauthorizedAccessException)
{
if (DeviceAccessStatus.DeniedByUser == _accessInfo.CurrentStatus)
{
Debug.WriteLine("Location has been disabled by the user. Enable access through the settings charm.");
}
else if (DeviceAccessStatus.DeniedBySystem == _accessInfo.CurrentStatus)
{
Debug.WriteLine("Location has been disabled by the system. The administrator of the device must enable location access through the location control panel.");
}
else if (DeviceAccessStatus.Unspecified == _accessInfo.CurrentStatus)
{
Debug.WriteLine("Location has been disabled by unspecified source. The administrator of the device may need to enable location access through the location control panel, then enable access through the settings charm.");
}
}
catch (TaskCanceledException)
{
// task cancelled
}
catch (Exception ex)
{
if ((uint)ex.HResult == 0x80004004)
{
// the application does not have the right capability or the location master switch is off
Debug.WriteLine("location is disabled in phone settings.");
}
}
finally
{
_cancellationTokenSource = null;
}
}
// Activate and deactivate the SensorCore when the visibility of the app changes
Window.Current.VisibilityChanged += async(oo, ee) =>
{
if (_monitor != null)
{
if (!ee.Visible)
{
await CallSensorcoreApiAsync(async() => { await _monitor.DeactivateAsync(); });
}
else
{
await CallSensorcoreApiAsync(async() => { await _monitor.ActivateAsync(); });
}
}
};
}