How to create layer through arcgis online portal and use it in IOS runtime sdk code.

Question

Hi, I have created account on ArcGIS online portal. In this portal, I have also created a map into it. I am able to show this map into IOS mobile device through ArcGIS runtime SDK. Below is the code which I am using.  self.portal = AGSPortal (URL: NSURL(string:  URL)!, loginRequired: false)

self.portal.credential = AGSCredential(user:  USERNAME, password:  PASSWORD)

//construct a portal item from the portal and item ID string

self.portalItem = AGSPortalItem(portal: self.portal, itemID:  ITEMID)

//construct a map from the portal item

self.map = AGSMap(item: self.portalItem)

self.portal.loadWithCompletion() {[weak self] (error) in

if error == nil {

// check the portal item loaded and print the modified date

if self?.portal.loadStatus == AGSLoadStatus.Loaded {

self?.mapView.map = self?.map

}

else{

print("The map failed to load. ", error?.localizedDescription)

}

Now I want to create a layer through this portal and use it into map but I didn't find any link to how to create a layer. Thanks,Kamal

DavidLednik · Answer

Kamal,

Are talking about code generated features, or adding them as a layer?

Because you can always use GraphicsOverlay to add features on top of your map.

https://developers.arcgis.com/ios/latest/swift/sample-code/add-graphics-with-renderer.htm

https://developers.arcgis.com/ios/latest/swift/sample-code/add-graphics-with-symbols.htm

If you have a feature layer you can just add them as described before.

https://developers.arcgis.com/ios/latest/swift/sample-code/feature-layer-feature-service-.htm

https://developers.arcgis.com/ios/latest/swift/sample-code/feature-layer-geodatabase-.htm

regards,

David

KamalMittal · Answer

Thanks for reply

Suppose I want to add some new house on the map and add some new streets. So how would I achieve that?

Thanks,

Kamal

DavidLednik · Answer

Hi!

There are couple of options how to load a layer and add it to the map.

You can create a layer with service URL:

let tiledLayer = AGSArcGISTiledLayer(url: URL(string: "https://services.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer")!)

Or with the portal item URL
let tiledLayer = AGSArcGISTiledLayer(url: URL(string: "https://www.arcgis.com/home/item.html?id=3b93337983e9436f8db950e38a8629af")!)

Or you can create a portal Item from portalItem string "3b93337983e9436f8db950e38a8629af"

And then create your layer with portal item:

let tiledLayer = AGSArcGISTiledLayer(item: portalItem)

When you have the layer you can add them to new or existing map/webmap:

self.map.basemap.baseLayers.add(tiledLayer)

In this case it is going to be added to basemap group. If you have operational layer(s) you can add them to operationalLayers group. This is where your KML, FeatureLayers would go.

Let me know if this answers your question,

David