ArcGISVectorTiledLayer class final
A layer that can visualize data from an ArcGIS vector tile service or a local VectorTileCache.
An ArcGIS vector tiled layer displays vector tiles from an online vector tile service or a local vector tile cache (.vtpk file). Vector tiled layers are appropriate for basemap, reference and possibly operational layers. They do not contain feature data, and do not support identify, search, or editing operations.
Vector tiles are an alternative to raster tile basemap layers, such as ArcGISTiledLayer. Instead of pixels (raster), the cartography is delivered using 2D points. The points describe lines, polygons, or the locations of labels and marker symbols. The file format of vector tiles is binary and conforms to the Mapbox Vector Tile Specification. This specification allows a more continuous visual experience between levels of detail compared to raster tiles. The vector tile file format requires less space than raster tiles and is optimized to reduce network bandwidth.
You can create a vector tiled layer using either a URI or a portal item. The URI can point to a vector tile source, a vector tile style sheet, or a local vector tile package (.vtpk) file. The portal item will contain a URI to a vector tile style sheet. The style sheet describes the appearance of the geometry and must be in the Mapbox GL Style format. The style sheet also contains a URI to a vector tile source. The source must be in the Mapbox TileJSON format. The source info includes a URI to a default style sheet.
More than one vector tile style sheet can use the same source. Both the source info and the style sheet are human readable JSON files.
You can also download vector tiles from an online vector tile service using ExportVectorTilesTask. The downloaded vector tile package is a single file (.vtpk) that contains all of the tile data files, the source information, a style sheet, and the font and symbol marker resources required to display the map.
Vector tile packages can be distributed inside mobile map packages (.mmpk). The mobile map package JSON can point to the location of the vector tile style sheet or the root of the vector tile package data.
- Inheritance
- Implemented types
Constructors
- ArcGISVectorTiledLayer.withItem(Item item)
-
Creates an ArcGIS Vector Tiled Layer from a PortalItem.
factory
- ArcGISVectorTiledLayer.withUri(Uri uri)
-
Creates an ArcGIS Vector Tiled Layer from an ArcGIS Vector Tile Service
URL, a Vector Tile Style Sheet URI, or the path to a local vector tile
package (.vtpk) file.
factory
- ArcGISVectorTiledLayer.withVectorTileCache(VectorTileCache vectorTileCache, {ItemResourceCache? itemResourceCache})
-
Creates an ArcGIS Vector Tiled Layer from a vector tile cache and an item
resource cache containing a custom style for this vector tile layer.
factory
Properties
- apiKey ↔ String
-
The API key allows your app to access ArcGIS location services and private
portal items.
getter/setter pairoverride
- attribution → String
-
The attribution text for the layer.
no setterinherited
- canChangeVisibility → bool
-
A flag indicating whether the layer content's visibility can be changed.
no setterinherited
- description ↔ String
-
The description for the layer.
getter/setter pairinherited
- fullExtent → Envelope?
-
The full extent of this layer, which is the extent where all layer data is
contained.
no setterinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- id ↔ String
-
The unique identifying string for the layer, as specified in a map or
scene.
getter/setter pairinherited
- isIdentifyEnabled → bool
-
True if the layer supports identify, false otherwise.
no setterinherited
- isVisible ↔ bool
-
The layer content's visibility.
getter/setter pairinherited
- item → Item?
-
The item the layer has been created from.
no setterinherited
- itemResourceCache → ItemResourceCache?
-
The item resource cache contains a custom style that can be applied to
this layer.
no setter
- loadError → ArcGISException?
-
The load error.
no setterinherited
- loadStatus → LoadStatus
-
The load status.
no setterinherited
- maxScale ↔ double
-
The maximum scale for the layer.
getter/setter pairinherited
- minScale ↔ double
-
The minimum scale for the layer.
getter/setter pairinherited
- name ↔ String
-
The layer content's name.
getter/setter pairinherited
-
onLoadStatusChanged
→ Stream<
LoadStatus> -
A stream that reports changes to the
LoadStatus.no setterinherited -
onSubLayerContentChanged
→ Stream<
List< LayerContent> > -
Callback invoked when the sublayer content of the layer content have
changed.
no setterinherited
-
onVisibilityChanged
→ Stream<
bool> -
Callback invoked when the visibility of the layer changes.
no setterinherited
- opacity ↔ double
-
The opacity for the layer.
getter/setter pairinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- showInLegend ↔ bool
-
A flag indicating whether the layer content participates in the legend.
getter/setter pairinherited
- sourceInfo → VectorTileSourceInfo?
-
The vector tile source info.
no setter
- spatialReference → SpatialReference?
-
The spatial reference of the layer.
no setterinherited
- style → VectorTileStyle?
-
The vector tile style info.
no setter
-
subLayerContents
→ List<
LayerContent> -
The sub layer contents of a layer content.
no setterinherited
- uri → Uri?
-
The URI of the ArcGIS vector tiled layer.
no setter
- vectorTileCache → VectorTileCache?
-
The underlying vector tile cache or null if no vector tile cache is
present.
no setter
Methods
-
cancelLoad(
) → void -
Cancels loading metadata for the object.
inherited
-
clone(
) → Layer -
Clones this instance of the layer and its members.
inherited
-
fetchLegendInfos(
) → Future< List< LegendInfo> > -
Fetches the list of legend info.
inherited
-
isVisibleAtScale(
double scale) → bool -
Returns the layer content's effective visibility at the specified scale.
inherited
-
load(
) → Future< void> -
Loads the metadata for the object asynchronously.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
retryLoad(
) → Future< void> -
Loads or retries loading metadata for the object asynchronously.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited