topic Re: AGSDynamicLayer for api 100 in ArcGIS Runtime SDK for iOS Questions

AGSDynamicLayer for api 100

mh10 — Fri, 10 Mar 2017 15:49:53 GMT

Is there anything in api 100 that provides similar functionality to AGSDynamicLayer? We have existing code that creates a layer from images that I am trying to port.

thanks

Re: AGSDynamicLayer for api 100

MarkDostal — Fri, 10 Mar 2017 16:31:41 GMT

Thank you for your question! Support for dynamic layer capabilities on the AGSArcGISMapImageLayer is coming with our next release, due in late Q2 2017.

Re: AGSDynamicLayer for api 100

RyanOlson1 — Fri, 10 Mar 2017 17:57:57 GMT

You were subclassing AGSDynamicLayer before? If so then the closest thing we have is allowing you to create custom tiled layers. Check out this category:

@interface AGSImageTiledLayer (CustomImageTiledLayer)

Also depending on what you were doing you might be able to use a raster layer instead now.

Re: AGSDynamicLayer for api 100

mh10 — Thu, 16 Mar 2017 14:11:08 GMT

thanks for replying, is there an example of this anywhere?

I am never geting any calls to tileRequestHandler, probably messed up AGSTileInfo.

Re: AGSDynamicLayer for api 100

MarkDostal — Thu, 16 Mar 2017 22:23:27 GMT

If you are not getting calls to your tileRequestHandler, yes, double check your AGSTileInfo and make sure you have created a layer of type AGSImageTiledLayer. There is a AGSServiceImageTiledLayer class has a different handler that is used to provide a URL for a tile.

Here is a some sample code which gets a a default AGSTileInfo and extent from one of the standard base maps, then uses that information to create a custom tiled layer.

```

override func viewDidLoad() {

super.viewDidLoad()

// Do any additional setup after loading the view.

//This will get the default tileInfo; it passes a completion handler

//which will create the custom layer and add it as a baseLayer to

//a new map.

defaultTileInfoWithCompletion { (tileInfo, fullExtent, error) in

//make sure we have no error and our tileInfo and fullExtent are OK

guard error == nil else { print("defaultTileInfo generated an error: \(error)"); return }

guard let tileInfo = tileInfo else { print("tileInfo is nil"); return }

guard let fullExtent = fullExtent else { print("fullExtent is nil"); return }

//creat the customLayer

let customLayer = AGSImageTiledLayer(tileInfo: tileInfo, fullExtent: fullExtent)

//Set tileRequestHandler, which gets called when the map needs a tile

customLayer.tileRequestHandler = { [weak customLayer] (tileKey: AGSTileKey) in

//In this sample, we're just responding with the data for a blue pushpin; for your own tiles,

//you would use the information in tileKey to return the correct tile data.

let image = UIImage(named: "BluePushpin")

customLayer?.respond(with: tileKey, data: UIImagePNGRepresentation(image!), error: nil)

}

//create a basemap, adding our customLayer as a baseLayer

let basemap = AGSBasemap()

basemap.baseLayers.add(customLayer)

//create the map and load it. You could also set it on a mapView, which would load it for you.

let map = AGSMap(basemap: basemap)

map.load(completion: { (error) in

guard error == nil else { print("Error loading map: \(error)"); return }

print("Map is loaded!")

})

self.myMap = map

}

//This method gets the default tileInfo from a simple basemap

//Because loading the baseLayer is asynchronous, a completion handler

//is provided; the handler will be called when the baseLayer is loaded

//Clients should create a tileInfo object using one of the AGSTileInfo constructors,

//based on your specific tile information.

func defaultTileInfoWithCompletion(_ completion: @escaping (_ tileInfo: AGSTileInfo?, _ fullExtent: AGSEnvelope?, _ error: Error?) -> Void) {

let basemap = AGSBasemap.lightGrayCanvas()

basemap.load { (error) in

guard error == nil else { print("basemap failed to load: \(error)"); return }

if let baseLayer = basemap.baseLayers[0] as? AGSArcGISTiledLayer {

baseLayer.load(completion: { (error) in

if error != nil {

completion(nil, nil, error)

return

}

let tileInfo = baseLayer.mapServiceInfo?.tileInfo

completion(tileInfo, baseLayer.fullExtent, nil)

})

}

```

Let us know if you're still having problems.

Re: AGSDynamicLayer for api 100

mh10 — Tue, 21 Mar 2017 14:19:12 GMT

thanks a lot, the example helped

But I'm not sure if AGSImageTiledLayer is going to work for us, we have large hires images that I think will be to slow to resize and section.

AGSDynamicLayer worked really well for these, on Android we are using PictureFillSymbol that worked fairly well. Is PictureFillSymbol going to be added?

Re: AGSDynamicLayer for api 100

MarkDostal — Tue, 21 Mar 2017 20:01:15 GMT

PictureFillSymbol will be added in a future release.

You can also take a look at AGSRaster and AGSRaterLayer. The supported image types for those classes are here: ArcGIS Runtime SDK for iOS: AGSRaster Class Reference

Note that the Raster classes are in beta in the current release for our mobile platforms (including iOS).

To learn more about rasters, you can go here:

http://desktop.arcgis.com/en/arcmap/latest/manage-data/raster-and-images/what-is-raster-data.htm

If your data is not local, you can look for ImageServiceRaster, which is not out yet, but coming soon.

Re: AGSDynamicLayer for api 100

mh10 — Fri, 14 Apr 2017 19:30:50 GMT

I actually got this to work as a AGSImageTiledLayer, the key was cropping the giant image before scaling. It seems so obvious now but I was scaling THEN cropping... and running out of memory.

thanks your help!

Re: AGSDynamicLayer for api 100

MarkDostal — Fri, 14 Apr 2017 20:31:06 GMT

Excellent! Let us know if you have any more questions!

Re: AGSDynamicLayer for api 100

MuruganandhamKuppan1 — Wed, 28 Feb 2018 10:12:40 GMT

MDostal-esristaff‌ thanks its worked for me