Hey Everyone
I'm in the process of writing an application that allows a user to have a base map displayed one of three ways.
1. The client identifies a local tpk they wish to use
2. The client identifies a URL for an ArcGISTileMapServiceLayer
3. If the two options above fail, we have a defaulted URL identified for loading a ArcGISTileMapServiceLayer.
I have proper handling in for dealing if a local TPKs can't be found; however I'm struggling with dealing with a bad URL being passed in. I'm coding for the notion that a client put in a type-o and provide them at worst with a default base map which we have identified.
Here is my first function for testing for a local tpk:
private bool LoadLocalTilePackage(string localTilePackage)
{
var agsTpkLayer = new ArcGISLocalTiledLayer(localTilePackage) { ID = localTilePackage };
var localTileTask = agsTpkLayer.InitializeAsync();
if (localTileTask.Exception != null)
{
foreach (var innerException in localTileTask.Exception.InnerExceptions)
{
FdmLogger.LogError("Trouble loading the local tile package: ", innerException.Message," ", localTilePackage, " Will attempt to load an online map");
}
return false;
}
else
{
MdsMapView.Map.Layers.Add(agsTpkLayer);
MdsOverviewMapView.Map.Layers.Add(agsTpkLayer);
return true;
}
}
Here is one version of the function I have tried so far in dealing with online tpk:
private bool LoadOnlineTilePackage(string onlineTilePackage)
{
var tiledUri = new Uri(onlineTilePackage);
var agsTiledLayer = new ArcGISTiledMapServiceLayer(tiledUri) { ID = onlineTilePackage };
var onlineTileTask = agsTiledLayer.InitializeAsync();
//the "Wait" below never comes back!!
if (!onlineTileTask.IsCompleted) onlineTileTask.Wait();
if (onlineTileTask.Exception != null)
{
foreach (var innerException in onlineTileTask.Exception.InnerExceptions)
{
FdmLogger.LogError("Trouble loading the defined online tile package: ", innerException.Message, " ",
onlineTilePackage, " Will attempt to load the default online map");
}
return false;
}
else
{
MdsMapView.Map.Layers.Add(agsTiledLayer);
MdsOverviewMapView.Map.Layers.Add(agsTiledLayer);
return true;
}
}
Here is a much more simplified version but the await never waits:
private bool LoadDefaultOnlineTilePackage()
{
var tiledUri = new Uri(_onlineDefaultTilePackage);
var agsTiledLayer = new ArcGISTiledMapServiceLayer(tiledUri) { ID = _onlineDefaultTilePackage };
await agsTiledLayer.InitializeAsync();
MdsMapView.Map.Layers.Add(agsTiledLayer);
MdsOverviewMapView.Map.Layers.Add(agsTiledLayer);
return true;
}
