private async void OnSearchMapsClicked(object sender, OnSearchMapEventArgs e)
{
try
{
// Get web map portal items from a keyword search
IEnumerable <PortalItem> mapItems = null;
// Connect to the portal (anonymously)
ArcGISPortal 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
string queryExpression = $"tags:\"{e.SearchText}\" access:public type: (\"web map\" NOT \"web mapping application\")";
// 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)
{
new AlertDialog.Builder(this).SetMessage(ex.ToString()).SetTitle("Error").Show();
}
}
private async void SearchPublicMaps(string searchText)
{
try
{
// Get web map portal items from a keyword search
IEnumerable <PortalItem> mapItems;
// Connect to the portal (anonymously)
ArcGISPortal portal = await ArcGISPortal.CreateAsync(new Uri(ArcGISOnlineUrl));
// Create a query expression that will get public items of type 'web map' with the keyword(s) in the items tags
string queryExpression = $"tags:\"{searchText}\" access:public type: (\"web map\" NOT \"web mapping application\")";
// 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;
// Hide the search controls
SearchMapsUI.IsVisible = false;
// Show the list of web maps
MapsListView.ItemsSource = mapItems.ToList(); // Explicit ToList() needed to avoid Xamarin.Forms UWP ListView bug.
MapsListView.IsVisible = true;
}
catch (Exception e)
{
await Application.Current.MainPage.DisplayAlert("Error", e.ToString(), "OK");
}
}
private async void SearchPublicMaps(string searchText)
{
// Get web map portal items from a keyword search
IEnumerable <PortalItem> mapItems = null;
// Connect to the portal (anonymously)
ArcGISPortal portal = await ArcGISPortal.CreateAsync(new Uri(ArcGISOnlineUrl));
// Create a query expression that will get public items of type 'web map' with the keyword(s) in the items tags
string queryExpression = $"tags:\"{searchText}\" access:public type: (\"web map\" NOT \"web mapping application\")";
// 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;
// Hide the search controls
SearchMapsUI.IsVisible = false;
// Show the list of web maps
MapsListView.ItemsSource = mapItems;
MapsListView.IsVisible = true;
}
// Handle the SearchTextEntered event from the search input UI.
// SearchMapsEventArgs contains the search text that was entered.
private async void SearchTextEntered(string searchText)
{
try
{
// Connect to the portal (anonymously).
ArcGISPortal 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.
string queryExpression =
$"tags:\"{searchText}\" access:public type: (\"web map\" NOT \"web mapping application\")";
// 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.
IEnumerable <PortalItem> 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);
}
}
private async void SearchPortal(ArcGISPortal currentPortal)
{
// Remove any existing results from the list.
MapItemListBox.Items.Clear();
// Show a status message and progress bar.
MessagesTextBlock.Text = "Searching for web map items on the portal at " + currentPortal.Uri.AbsoluteUri;
ProgressStatus.Visibility = Visibility.Visible;
var messageBuilder = new StringBuilder();
try
{
// Report connection info.
messageBuilder.AppendLine("Connected to the portal on " + currentPortal.Uri.Host);
// Report the user name used for this connection.
if (currentPortal.User != null)
{
messageBuilder.AppendLine("Connected as: " + currentPortal.User.UserName);
}
else
{
// Note: This shouldn't happen for a secure portal!
messageBuilder.AppendLine("Anonymous");
}
// Search the portal for web maps.
var items = await currentPortal.FindItemsAsync(new PortalQueryParameters("type:(\"web map\" NOT \"web mapping application\")"));
// Build a list of items from the results that shows the map name and stores the item ID (with the Tag property).
var resultItems = from r in items.Results select new ListBoxItem {
Tag = r.ItemId, Content = r.Title
};
// Add the items to the list box.
foreach (var itm in resultItems)
{
MapItemListBox.Items.Add(itm);
}
// Enable the button for adding a web map.
AddMapItem.IsEnabled = true;
}
catch (Exception ex)
{
// Report errors searching the portal.
messageBuilder.AppendLine(ex.Message);
}
finally
{
// Show messages, hide the progress bar.
MessagesTextBlock.Text = messageBuilder.ToString();
ProgressStatus.Visibility = Visibility.Hidden;
}
}
private async void SearchPortal(ArcGISPortal currentPortal)
{
// Clear any existing results.
WebMapListView.ItemsSource = null;
// Show status message.
MessagesTextBlock.Text = "Searching for web map items on the portal at " + currentPortal.Uri.AbsoluteUri;
var messageBuilder = new StringBuilder();
try
{
// Report connection info
messageBuilder.AppendLine("Connected to the portal on " + currentPortal.Uri.Host);
// Report the user name used for this connection.
if (currentPortal.User != null)
{
messageBuilder.AppendLine("Connected as: " + currentPortal.User.UserName);
}
else
{
// Note: This shouldn't happen for a secure portal!
messageBuilder.AppendLine("Anonymous");
}
// Search the portal for web maps.
var items = await currentPortal.FindItemsAsync(new PortalQueryParameters("type:(\"web map\" NOT \"web mapping application\")"));
// Build a list of items from the results that shows the map name and stores the item ID (with the Tag property).
var resultItems = from r in items.Results select new KeyValuePair <string, PortalItem>(r.Title, r);
// Add the items to a dictionary.
_webMapPortalItems = new Dictionary <string, PortalItem>();
foreach (var itm in resultItems)
{
_webMapPortalItems.Add(itm.Key, itm.Value);
}
// Show the portal item titles in the list view.
WebMapListView.ItemsSource = _webMapPortalItems.Keys;
// Enable the button to load a selected web map item.
LoadWebMapButton.IsEnabled = true;
}
catch (Exception ex)
{
// Report errors searching the portal.
messageBuilder.AppendLine(ex.Message);
}
finally
{
// Show messages.
MessagesTextBlock.Text = messageBuilder.ToString();
}
}
private async void SearchPortal(ArcGISPortal currentPortal)
{
// Show status message.
_messagesTextView.Text = "Searching for web map items on the portal at " + currentPortal.Uri.AbsoluteUri;
var messageBuilder = new StringBuilder();
try
{
// Report connection info.
messageBuilder.AppendLine("Connected to the portal on " + currentPortal.Uri.Host);
// Report the user name used for this connection.
if (currentPortal.User != null)
{
messageBuilder.AppendLine("Connected as: " + currentPortal.User.UserName);
}
else
{
// Note: This shouldn't happen for a secure portal!
messageBuilder.AppendLine("Anonymous");
}
// Search the portal for web maps.
var items = await currentPortal.FindItemsAsync(new PortalQueryParameters("type:(\"web map\" NOT \"web mapping application\")"));
// Build a list of items from the results.
var resultItems = from r in items.Results select new KeyValuePair <string, PortalItem>(r.Title, r);
// Add the items to a dictionary.
List <PortalItem> webMapItems = new List <PortalItem>();
foreach (var itm in resultItems)
{
webMapItems.Add(itm.Value);
}
// Create an array adapter for the result list.
PortalItemAdapter adapter = new PortalItemAdapter(this, webMapItems);
// Apply the adapter to the list view to show the results.
_webMapListView.Adapter = adapter;
}
catch (Exception ex)
{
// Report errors searching the portal.
messageBuilder.AppendLine(ex.Message);
}
finally
{
// Show messages.
_messagesTextView.Text = messageBuilder.ToString();
}
}
private async void SearchPortal(ArcGISPortal currentPortal)
{
// Show status message.
_messagesLabel.Text = "Searching for web map items on the portal at " + currentPortal.Uri.AbsoluteUri;
var messageBuilder = new StringBuilder();
try
{
// Report connection info.
messageBuilder.AppendLine("Connected to the portal on " + currentPortal.Uri.Host);
// Report the user name used for this connection.
if (currentPortal.User != null)
{
messageBuilder.AppendLine("Connected as: " + currentPortal.User.UserName);
}
else
{
// Note: This shouldn't happen for a secure portal!
messageBuilder.AppendLine("Anonymous");
}
// Search the portal for web maps.
var items = await currentPortal.FindItemsAsync(new PortalQueryParameters("type:(\"web map\" NOT \"web mapping application\")"));
// Build a list of items from the results that stores the map name as a key for the item.
var resultItems = from r in items.Results select new KeyValuePair <string, PortalItem>(r.Title, r);
// Add the items to a dictionary.
List <PortalItem> webMapItems = new List <PortalItem>();
foreach (var itm in resultItems)
{
webMapItems.Add(itm.Value);
}
// Show the portal item titles in the list view.
PortalItemListSource webMapTableSource = new PortalItemListSource(webMapItems);
webMapTableSource.OnWebMapSelected += WebMapTableSource_OnWebMapSelected;
_webMapTableView.Source = webMapTableSource;
_webMapTableView.ReloadData();
}
catch (Exception ex)
{
// Report errors searching the portal.
messageBuilder.AppendLine(ex.Message);
}
finally
{
// Show messages.
_messagesLabel.Text = messageBuilder.ToString();
}
}
private async Task LoadItemsAsync(ArcGISPortal portal)
{
var results = await portal.FindItemsAsync(new PortalQueryParameters(@"type:'web map' AND NOT(type:'Web Mapping Application')")
{
CanSearchPublic = false, // Find only items from used portal
Limit = 20,
SortField = "relevance"
});
foreach (var item in results.Results)
{
WebMaps.Add(item);
}
}
private async void addProtal()
{
ArcGISPortal portal = await ArcGISPortal.CreateAsync(new Uri("http://esrichina3d.arcgisonline.cn/arcgis/sharing/rest"));
PortalQueryParameters para = PortalQueryParameters.CreateForItemsOfType(PortalItemType.WebScene);
para.Limit = 20;
PortalQueryResultSet <PortalItem> items = await portal.FindItemsAsync(para);
int sum = 0;
productList = new List <Product>();
try
{
OpenFileActivity.item = items.Results.First();
foreach (PortalItem item in items.Results)
{
System.IO.Stream st = await item.GetDataAsync();
System.IO.StreamReader reader = new StreamReader(st);
st.Position = 0;
string json = reader.ReadToEnd();
reader.Close();
st.Close();
productList.Add(new Product(item.ThumbnailUri.ToString(), item.Title, json));
}
}
catch
{ }
RecyclerView recyclerView = (RecyclerView)FindViewById(Resource.Id.recyclerView);
//设置layoutManager 布局模式
recyclerView.SetLayoutManager(new StaggeredGridLayoutManager(3, StaggeredGridLayoutManager.Vertical));
// recyclerView.SetLayoutManager(new LinearLayoutManager(this));
//设置adapter
Context context = this.BaseContext;
MasonryAdapter WebSceneItemsAdapter = new MasonryAdapter(productList, context);
WebSceneItemsAdapter.ItemClick += WebSceneItemsAdapter_ItemClick;
recyclerView.SetAdapter(WebSceneItemsAdapter);
//设置item之间的间隔
SpacesItemDecoration decoration = new SpacesItemDecoration(16);
recyclerView.AddItemDecoration(decoration);
}
private async void SearchMapsClicked(object sender, Windows.UI.Xaml.RoutedEventArgs e)
{
// Get web map portal items in the current user's folder or from a keyword search
IEnumerable <PortalItem> mapItems = null;
// Connect to the portal (anonymously)
ArcGISPortal portal = await ArcGISPortal.CreateAsync();
// Create a query expression that will get public items of type 'web map' with the keyword(s) in the items tags
string queryExpression = $"tags:\"{SearchText.Text}\" access:public type: (\"web map\" NOT \"web mapping application\")";
// 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 search result items in the list
SearchMapsList.ItemsSource = mapItems;
}
/// <summary>
/// Async task to load maps from the portal instance and put them in groups
/// </summary>
/// <param name="portal">Portal instance</param>
/// <returns></returns>
private async Task LoadMaps(ArcGISPortal portal)
{
StatusMessage = "Loading maps...";
var task1 = portal.GetBasemapsAsync();
var items = await task1;
Basemaps = items.Select(b => b.Item).OfType <PortalItem>();
var groups = new ObservableCollection <MapGroup>();
Groups = groups;
groups.Add(new MapGroup()
{
Name = "Base maps", Items = Basemaps
});
IsLoadingBasemaps = false;
StatusMessage = string.Format("Connected to {0} ({1})", portal.PortalInfo.PortalName, portal.PortalInfo.PortalName);
foreach (var item in await portal.GetFeaturedGroupsAsync())
{
var query = PortalQueryParameters.CreateForItemsOfTypeInGroup(PortalItemType.WebMap, item.GroupId);
query.Limit = 20;
var result = await portal.FindItemsAsync(query);
if (result.TotalResultsCount > 0)
{
groups.Add(new MapGroup()
{
Name = item.Title, Items = result.Results
});
if (Featured == null)
{
Featured = result.Results;
}
}
}
}
