public void SetDefaultValues ()
{
Cb = 0x48;
Flags = RuntimeImage.ILOnly;
CodeManagerTable = DataDirectory.Zero;
ExportAddressTableJumps = DataDirectory.Zero;
ManagedNativeHeader = DataDirectory.Zero;
}
private async void SaveMapAsync(object sender, OnSaveMapEventArgs e)
{
AlertDialog.Builder alertBuilder = new AlertDialog.Builder(this);
// Get the current map
Map myMap = _myMapView.Map;
try
{
// Show the progress bar so the user knows work is happening
_progressBar.Visibility = ViewStates.Visible;
// Get information entered by the user for the new portal item properties
string title = e.MapTitle;
string description = e.MapDescription;
string[] tags = e.Tags;
// Apply the current extent as the map's initial extent
myMap.InitialViewpoint = _myMapView.GetCurrentViewpoint(ViewpointType.BoundingGeometry);
// Export the current map view for the item's thumbnail
RuntimeImage thumbnailImg = await _myMapView.ExportImageAsync();
// See if the map has already been saved (has an associated portal item)
if (myMap.Item == null)
{
// Call a function to save the map as a new portal item
await SaveNewMapAsync(myMap, title, description, tags, thumbnailImg);
// Report a successful save
alertBuilder.SetTitle("Map saved");
alertBuilder.SetMessage("Saved '" + title + "' to ArcGIS Online!");
alertBuilder.Show();
}
else
{
// This is not the initial save, call SaveAsync to save changes to the existing portal item
await myMap.SaveAsync();
// Get the file stream from the new thumbnail image
Stream imageStream = await thumbnailImg.GetEncodedBufferAsync();
// Update the item thumbnail
((PortalItem)myMap.Item).SetThumbnail(imageStream);
await myMap.SaveAsync();
// Report update was successful
alertBuilder.SetTitle("Updates saved");
alertBuilder.SetMessage("Saved changes to '" + myMap.Item.Title + "'");
alertBuilder.Show();
}
}
catch (Exception ex)
{
// Show the exception message
alertBuilder.SetTitle("Unable to save map");
alertBuilder.SetMessage(ex.Message);
alertBuilder.Show();
}
finally
{
// Hide the progress bar
_progressBar.Visibility = ViewStates.Invisible;
}
}
private async Task SaveNewMapAsync(Map myMap, string title, string description, string[] tags, RuntimeImage img)
{
// Challenge the user for portal credentials (OAuth credential request for arcgis.com)
CredentialRequestInfo loginInfo = new CredentialRequestInfo
{
// Use the OAuth implicit grant flow
GenerateTokenOptions = new GenerateTokenOptions
{
TokenAuthenticationType = TokenAuthenticationType.OAuthImplicit
},
// Indicate the url (portal) to authenticate with (ArcGIS Online)
ServiceUri = new Uri("https://www.arcgis.com/sharing/rest")
};
try
{
// Get a reference to the (singleton) AuthenticationManager for the app
AuthenticationManager thisAuthenticationManager = AuthenticationManager.Current;
// Call GetCredentialAsync on the AuthenticationManager to invoke the challenge handler
await thisAuthenticationManager.GetCredentialAsync(loginInfo, false);
}
catch (System.OperationCanceledException)
{
// user canceled the login
throw new Exception("Portal log in was canceled.");
}
// Get the ArcGIS Online portal (will use credential from login above)
ArcGISPortal agsOnline = await ArcGISPortal.CreateAsync();
// Save the current state of the map as a portal item in the user's default folder
await myMap.SaveAsAsync(agsOnline, null, title, description, tags, img);
}
private async void SaveMapClicked(object sender, RoutedEventArgs e)
{
try
{
// Show the progress bar so the user knows work is happening
SaveProgressBar.Visibility = Visibility.Visible;
// Get the current map
Map myMap = MyMapView.Map;
// Apply the current extent as the map's initial extent
myMap.InitialViewpoint = MyMapView.GetCurrentViewpoint(ViewpointType.BoundingGeometry);
// Get the current map view for the item thumbnail
RuntimeImage thumbnailImg = await MyMapView.ExportImageAsync();
// See if the map has already been saved (has an associated portal item)
if (myMap.Item == null)
{
// Get information for the new portal item
string title = TitleTextBox.Text;
string description = DescriptionTextBox.Text;
string[] tags = TagsTextBox.Text.Split(',');
// Make sure all required info was entered
if (String.IsNullOrEmpty(title) || String.IsNullOrEmpty(description) || tags.Length == 0)
{
throw new Exception("Please enter a title, description, and some tags to describe the map.");
}
// Call a function to save the map as a new portal item
await SaveNewMapAsync(MyMapView.Map, title, description, tags, thumbnailImg);
// Report a successful save
MessageBox.Show("Saved '" + title + "' to ArcGIS Online!", "Map Saved");
}
else
{
// This is not the initial save, call SaveAsync to save changes to the existing portal item
await myMap.SaveAsync();
// Get the file stream from the new thumbnail image
Stream imageStream = await thumbnailImg.GetEncodedBufferAsync();
// Update the item thumbnail
((PortalItem)myMap.Item).SetThumbnail(imageStream);
await myMap.SaveAsync();
// Report update was successful
MessageBox.Show("Saved changes to '" + myMap.Item.Title + "'", "Updates Saved");
}
}
catch (Exception ex)
{
// Report error message
MessageBox.Show("Error saving map to ArcGIS Online: " + ex.Message);
}
finally
{
// Hide the progress bar
SaveProgressBar.Visibility = Visibility.Hidden;
}
}
