private void ShowSearchMapUI()
{
if (_searchMapsUI != null)
{
return;
}
// Create a view to show map item info entry controls over the map view
var ovBounds = new CoreGraphics.CGRect(0, 60, View.Bounds.Width, View.Bounds.Height - 60);
_searchMapsUI = new SearchMapsDialogOverlay(ovBounds, 0.75f, UIColor.White);
// Handle the OnSearchMapsTextEntered event to get the info entered by the user
_searchMapsUI.OnSearchMapsTextEntered += SearchTextEntered;
// Handle the cancel event when the user closes the dialog without choosing to search
_searchMapsUI.OnCanceled += SearchCanceled;
// Add the search UI view (will display semi-transparent over the map view)
View.Add(_searchMapsUI);
}
// Handle the SearchTextEntered event from the search input UI
// SearchMapsEventArgs contains the search text that was entered
private async void SearchTextEntered(object sender, SearchMapsEventArgs e)
{
try
{
// Get web map portal items from a keyword search
IEnumerable <PortalItem> mapItems = null;
ArcGISPortal portal;
// Connect to the portal (anonymously)
portal = await ArcGISPortal.CreateAsync(new Uri(ServerUrl));
// Create a query expression that will get public items of type 'web map' with the keyword(s) in the items tags
var queryExpression = string.Format("tags:\"{0}\" access:public type: (\"web map\" NOT \"web mapping application\")", e.SearchText);
// Create a query parameters object with the expression and a limit of 10 results
PortalQueryParameters queryParams = new PortalQueryParameters(queryExpression, 10);
// Search the portal using the query parameters and await the results
PortalQueryResultSet <PortalItem> findResult = await portal.FindItemsAsync(queryParams);
// Get the items from the query results
mapItems = findResult.Results;
// Show the map results
ShowMapList(mapItems);
}
catch (Exception ex)
{
// Report search error
UIAlertController alert = UIAlertController.Create("Error", ex.Message, UIAlertControllerStyle.Alert);
alert.AddAction(UIAlertAction.Create("OK", UIAlertActionStyle.Default, null));
PresentViewController(alert, true, null);
}
finally
{
// Get rid of the search input controls
_searchMapsUI.Hide();
_searchMapsUI = null;
}
}
private void SearchCanceled(object sender, EventArgs e)
{
// Remove the search input UI
_searchMapsUI.Hide();
_searchMapsUI = null;
}