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100.x replacement for 10.2.5 renderNativeResolution

MarcEtcheverry

I have a data source that has 96DPI 512x512 stiles for street labels.

These look very tiny on retina displays. In 10.2.5 there was a property called renderNativeResolution for tiled maps, setting it to NO managed to work around this issue.

What is the replacement for this in 100.x? Changing scaleSymbols (set to NO by default) after the layer loads does nothing.

Layer is hosted here: ext/SP_CityBM_Labels (MapServer)

Using AGSArcGISMapImageLayer

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MarkDostal

Marc,

Sorry to hear you're having problems. I tested this here, in the iPhone 8 simulator and on a device, and compared those images to the same data in the ArcGIS.com Map Viewer in Safari. The results were very similar; the highway shields on the iPhone were slightly smaller that AGOL, but not by much. An image comparing the two is below.

What device(s) and iOS versions are you seeing the difference on? How does it appear in the simulator? Is it a slight (~10% difference) or a 2x - 3x difference?

With the 100.x releases, there is no need for the 10.2.x `renderNativeResolution` property, as the resolutions and DPIs are now all handled internally and automatically.

Mark

MarcEtcheverry

The problem happens at high zoom levels.

Try this polygon

AGSPolygon: [[(1254577.712545, 214993.623308), (1254577.712545, 213410.613883), (1253846.642921, 213410.613883), (1253846.642921, 214993.623308)], sr: 2926], sr: 2926

Here is some sample code on how a base street layer is loaded, and then how the labels are loaded:

AGSLayer <SPAN class="operator token">*</SPAN>baseLayer <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">[</SPAN>AGSArcGISMapImageLayer alloc<SPAN class="punctuation token">]</SPAN> initWithURL<SPAN class="punctuation token">:</SPAN><SPAN class="punctuation token">[</SPAN>NSURL URLWithString<SPAN class="punctuation token">:</SPAN>@"http<SPAN class="punctuation token">:</SPAN><SPAN class="operator token">/</SPAN>
gisrevprxy<SPAN class="punctuation token">.</SPAN>seattle<SPAN class="punctuation token">.</SPAN>gov<SPAN class="operator token">/</SPAN>ArcGIS<SPAN class="operator token">/</SPAN>rest<SPAN class="operator token">/</SPAN>services<SPAN class="operator token">/</SPAN>ext<SPAN class="operator token">/</SPAN>SP_CityBM_Roads<SPAN class="operator token">/</SPAN>MapServer<SPAN class="operator token">/</SPAN>"<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>
AGSMap <SPAN class="operator token">*</SPAN>map <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">[</SPAN>AGSMap alloc<SPAN class="punctuation token">]</SPAN> initWithBasemap<SPAN class="punctuation token">:</SPAN><SPAN class="punctuation token">[</SPAN>AGSBasemap basemapWithBaseLayer<SPAN class="punctuation token">:</SPAN>baseLayer<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>
self<SPAN class="punctuation token">.</SPAN>mapView<SPAN class="punctuation token">.</SPAN>map <SPAN class="operator token">=</SPAN> map<SPAN class="punctuation token">;</SPAN>
AGSArcGISMapImageLayer <SPAN class="operator token">*</SPAN>tiledLayerLabels <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">[</SPAN>AGSArcGISMapImageLayer alloc<SPAN class="punctuation token">]</SPAN> initWithURL<SPAN class="punctuation token">:</SPAN><SPAN class="punctuation token">[</SPAN>NSURL
URLWithString<SPAN class="punctuation token">:</SPAN>@<SPAN class="string token"><SPAN>"</SPAN><A class="jive-link-external-small" href="https://community.esri.com/external-link.jspa?url=http%3A%2F%2Fgisrevprxy.seattle.gov%2FArcGIS%2Frest%2Fservices%2Fext%2FSP_CityBM_Labels%2FMapServer%2F" target="_blank">http://gisrevprxy.seattle.gov/ArcGIS/rest/services/ext/SP_CityBM_Labels/MapServer/</A><SPAN>"</SPAN></SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>
tiledLayerLabels<SPAN class="punctuation token">.</SPAN>name <SPAN class="operator token">=</SPAN> <SPAN class="token function">NSLocalizedString</SPAN><SPAN class="punctuation token">(</SPAN>@<SPAN class="string token">"Labels"</SPAN><SPAN class="punctuation token">,</SPAN> nil<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
<SPAN class="punctuation token">[</SPAN>self<SPAN class="punctuation token">.</SPAN>mapView<SPAN class="punctuation token">.</SPAN>map<SPAN class="punctuation token">.</SPAN>operationalLayers addObject<SPAN class="punctuation token">:</SPAN>tiledLayerLabels<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Then try a similar zoom level on this online site: Seattle Department of Transportation: Seattle Parking Map

I am not really tied into using that data source for the labels, as the drawings from that ArcGIS are very low quality (no antialiasing and low resolution). If could get a higher quality (perhaps a vector) data source for labels that could be overplayed in that map, it would work well.

MarkDostal

Marc,

I can see that at that zoom level the labels are pretty small. For comparison, I ran a test app with your data on an iPhone 8 and also loaded a map with the same labels in Safari on the same iPhone 8. The results are almost identical, so I don't think there's an issue with DPI on Retina displays. With the 100.x releases we are basically interpreting DIPs the same way that the browser does. That’s the justification for the change from the 100.2.5 behavior.

Safari - ArcGIS.com map viewer

Test app using Runtime SDK for iOS - iPhone 8

Let us know if there's anything else we can help with.

Mark

MarcEtcheverry

Yes, I see. But on the website that also uses ArcGIS (though perhaps an old version), they manage to have easily visible labels even at very zoomed resolutions. Is there a way to achieve this with the SDK?

1) If you examine the requests that are made asynchronously, perhaps they are requesting something different from the ArcGIS server than the iOS SDK does? Is there any way to make the ArcGIS iOS SDK match that behavior so I get bigger labels?

Seattle Department of Transportation: Seattle Parking Map

2) Another possible solution is using another data set for labels, like this https://developer.here.com/documentation/map-tile/topics/resource-base-lltile.html.

To achieve this I will create a map with a Web Mercator Spatial Reference, then add the Seattle WKID 2926 baseman, and then add the tile as a reference layer.

Some problems with this arise:

A) Obviously there labels are worldwide, while my map data is only for the state of Washington. Is there any way to restrict the drawing of the labels to a specific extent?

How exactly do I create the levelsOfDetails resolution and scale? All I know is that HERE maps provides 20 levels. I know I can pass in an array of AGSLevelOfDetail, but I am unsure on how to give the proper resolution and scale, so I am just passing in whatever OSM does right now.

C) Is it possible to get a vector based label layer from ArcGIS? AGSBasemap imageryWithLabelsVectorBasemap obviously has a AGSArcGISVectorTiledLayer reference layer

NSString <SPAN class="operator token">*</SPAN>template <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN>NSString stringWithFormat<SPAN class="punctuation token">:</SPAN>@<SPAN class="string token"><SPAN>"</SPAN><A class="jive-link-external-small" href="https://community.esri.com/external-link.jspa?url=https%3A%2F%2F" target="_blank">https://</A><SPAN>{subDomain}.base.maps.cit.api.here.com/maptile/2.1/labeltile/newest/normal.day.mobile/{level}/{col}/{row}/256/png?app_id=%@&app_code=%@&ppi=250&lg=eng"</SPAN></SPAN><SPAN class="punctuation token">,</SPAN> APIKeyHereAppID<SPAN class="punctuation token">,</SPAN> APIKeyHereAppCode<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>
AGSSpatialReference <SPAN class="operator token">*</SPAN>spatialReference <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN>AGSSpatialReference webMercator<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>
AGSPoint <SPAN class="operator token">*</SPAN>origin <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN>AGSPoint pointWithX<SPAN class="punctuation token">:</SPAN><SPAN class="operator token">-</SPAN><SPAN class="number token">20037508.342789</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; y<SPAN class="punctuation token">:</SPAN><SPAN class="number token">20037508.368847</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; spatialReference<SPAN class="punctuation token">:</SPAN>spatialReference<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>

NSArray <SPAN class="operator token">*</SPAN>levelsOfDetail <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">(</SPAN>AGSWebTiledLayer <SPAN class="operator token">*</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">[</SPAN>AGSBasemap openStreetMapBasemap<SPAN class="punctuation token">]</SPAN> baseLayers<SPAN class="punctuation token">]</SPAN> firstObject<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">)</SPAN> tileInfo<SPAN class="punctuation token">]</SPAN> levelsOfDetail<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>
AGSTileInfo <SPAN class="operator token">*</SPAN>tileInfo <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN>AGSTileInfo tileInfoWithDPI<SPAN class="punctuation token">:</SPAN><SPAN class="number token">250</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; format<SPAN class="punctuation token">:</SPAN>AGSTileImageFormatPNG
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; levelsOfDetail<SPAN class="punctuation token">:</SPAN>levelsOfDetail
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; origin<SPAN class="punctuation token">:</SPAN>origin
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; spatialReference<SPAN class="punctuation token">:</SPAN>spatialReference
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; tileHeight<SPAN class="punctuation token">:</SPAN><SPAN class="number token">256</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; tileWidth<SPAN class="punctuation token">:</SPAN><SPAN class="number token">256</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>

AGSEnvelope <SPAN class="operator token">*</SPAN>fullExtent <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN>AGSEnvelope envelopeWithXMin<SPAN class="punctuation token">:</SPAN><SPAN class="operator token">-</SPAN><SPAN class="number token">20037508.342789</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; yMin<SPAN class="punctuation token">:</SPAN><SPAN class="operator token">-</SPAN><SPAN class="number token">20037471.205137</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; xMax<SPAN class="punctuation token">:</SPAN><SPAN class="number token">20037285.703808</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; yMax<SPAN class="punctuation token">:</SPAN><SPAN class="number token">20037471.205137</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; spatialReference<SPAN class="punctuation token">:</SPAN>spatialReference<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>

AGSLayer <SPAN class="operator token">*</SPAN>streetLabelsLayer <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">[</SPAN>AGSWebTiledLayer alloc<SPAN class="punctuation token">]</SPAN> initWithURLTemplate<SPAN class="punctuation token">:</SPAN>template
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; subDomains<SPAN class="punctuation token">:</SPAN>@<SPAN class="punctuation token">[</SPAN>@<SPAN class="string token">"1"</SPAN><SPAN class="punctuation token">,</SPAN> @<SPAN class="string token">"2"</SPAN><SPAN class="punctuation token">,</SPAN> @<SPAN class="string token">"3"</SPAN><SPAN class="punctuation token">,</SPAN> @<SPAN class="string token">"4"</SPAN><SPAN class="punctuation token">]</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; tileInfo<SPAN class="punctuation token">:</SPAN>tileInfo
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; fullExtent<SPAN class="punctuation token">:</SPAN>fullExtent<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>
streetLabelsLayer<SPAN class="punctuation token">.</SPAN>name <SPAN class="operator token">=</SPAN> <SPAN class="token function">NSLocalizedString</SPAN><SPAN class="punctuation token">(</SPAN>@<SPAN class="string token">"Street Labels (HERE Maps)"</SPAN><SPAN class="punctuation token">,</SPAN> nil<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

AGSLayer <SPAN class="operator token">*</SPAN>baseLayer <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">[</SPAN>AGSArcGISMapImageLayer alloc<SPAN class="punctuation token">]</SPAN> initWithURL<SPAN class="punctuation token">:</SPAN><SPAN class="punctuation token">[</SPAN>NSURL URLWithString<SPAN class="punctuation token">:</SPAN>@<SPAN class="string token"><SPAN>"</SPAN><A class="jive-link-external-small" href="https://community.esri.com/external-link.jspa?url=https%3A%2F%2Fgisrevprxy.seattle.gov%2FArcGIS%2Frest%2Fservices%2Fext%2FSP_CityBM_Roads%2FMapServer%2F" target="_blank">https://gisrevprxy.seattle.gov/ArcGIS/rest/services/ext/SP_CityBM_Roads/MapServer/</A><SPAN>"</SPAN></SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>
AGSLayer <SPAN class="operator token">*</SPAN>linesLayer <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">[</SPAN>AGSArcGISMapImageLayer alloc<SPAN class="punctuation token">]</SPAN> initWithURL<SPAN class="punctuation token">:</SPAN><SPAN class="punctuation token">[</SPAN>NSURL URLWithString<SPAN class="punctuation token">:</SPAN>@<SPAN class="string token"><SPAN>"</SPAN><A class="jive-link-external-small" href="https://community.esri.com/external-link.jspa?url=https%3A%2F%2Fgisrevprxy.seattle.gov%2FArcGIS%2Frest%2Fservices%2FSDOT_EXT%2Fsdot_parking%2FMapServer%2F" target="_blank">https://gisrevprxy.seattle.gov/ArcGIS/rest/services/SDOT_EXT/sdot_parking/MapServer/</A><SPAN>"</SPAN></SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>

AGSBasemap <SPAN class="operator token">*</SPAN>basemap <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN>AGSBasemap basemapWithBaseLayers<SPAN class="punctuation token">:</SPAN>@<SPAN class="punctuation token">[</SPAN>baseLayer<SPAN class="punctuation token">]</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; referenceLayers<SPAN class="punctuation token">:</SPAN>@<SPAN class="punctuation token">[</SPAN>linesLayer<SPAN class="punctuation token">,</SPAN> streetLabelsLayer<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">// Possible bug: You must init your map with a spatial reference, otherwise initing it with the basemap won't display the streetLabelsLayer!</SPAN>
self<SPAN class="punctuation token">.</SPAN>mapView<SPAN class="punctuation token">.</SPAN>map <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">[</SPAN>AGSMap alloc<SPAN class="punctuation token">]</SPAN> initWithSpatialReference<SPAN class="punctuation token">:</SPAN><SPAN class="punctuation token">[</SPAN>AGSSpatialReference webMercator<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>
self<SPAN class="punctuation token">.</SPAN>mapView<SPAN class="punctuation token">.</SPAN>map<SPAN class="punctuation token">.</SPAN>basemap <SPAN class="operator token">=</SPAN> basemap<SPAN class="punctuation token">;</SPAN>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

MarkDostal

Marc,

I opened up the Seattle Parking Map on an iPhone 8 and at similar zoom levels the labels looked the same as in a test app build with the SDK and in ArcGIS.com (in Safari). So I don't think there's any difference with how those three are displaying the labels. I do not know of a way to increase just the label size, aside from creating a new data set with bigger labels.

If you want to use a third party service for data/labels, take a look at this Sample we provide on GitHub: arcgis-runtime-samples-ios/arcgis-ios-sdk-samples/Layers/Web tiled layer at master · Esri/arcgis-runtime-samples-ios · G…

It describes the `AGSWebTiledLayer` and "provides a simple way to integrate non-ArcGIS Services as a layer in a map." It should answer your questions about levels-of-detail.

>> A) Obviously there labels are worldwide, while my map data is only for the state of Washington. Is there any way to restrict the drawing of the labels to a specific extent?

The map will display the entire extent of your base map; if your base map has a limited extent (say the state of Washington), that should limit the map extent to that. Depending on the data, you might be able to perform a spatial query, only returning data in a given extent (the state of Washington). Again, if you create a new dataset with larger labels, you would limit the labels shown that way.

>> C) Is it possible to get a vector based label layer from ArcGIS? AGSBasemap imageryWithLabelsVectorBasemap obviously has a AGSArcGISVectorTiledLayer reference layer

AGSBasemap has both "reference layers" and "base layers". Both of those are arrays of AGSLayer objects, which has an `isVisible` property you can use to control the visibility. I'm not aware of any layers specific to just labels that we provide.

Mark

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