A base class for layers which displays cached maps. You would typically work with one or more sub-classes of this class, for instance, AGSTiledMapServiceLayer
.
In a Model-View-Controller architecture, this object represents the Model. The corresponding View object, AGSTiledLayerView
, is created when subclasses, for instance AGSTiledMapServiceLayer
, are added to the map.
Public Member Functions | |
(void) | - dataChanged |
(void) | - layerDidFailToLoad: |
(void) | - layerDidLoad |
(NSOperation< AGSTileOperation > *) | - retrieveImageAsyncForTile: |
Properties | |
UIView< AGSLayerDelegate > * | delegate |
NSError * | error |
AGSEnvelope * | fullEnvelope |
AGSEnvelope * | initialEnvelope |
BOOL | loaded |
NSString * | name |
NSOperationQueue * | operationQueue |
BOOL | renderNativeResolution |
AGSSpatialReference * | spatialReference |
id< AGSTiledLayerTileDelegate > | tileDelegate |
AGSTileInfo * | tileInfo |
BOOL | timeAware |
AGSUnits | units |
- (void) dataChanged |
This method tells the layer that the data has changed and it should be redrawn.
Implemented in AGSGraphicsLayer.
- (void) layerDidFailToLoad: | (NSError *) | error |
Method to notify the delegate that a layer failed to load. This method will also post a "LayerFailedToLoad" notification that can be observed by the developer.
error | Information regarding the cause of the layer failing to load. |
- (void) layerDidLoad |
Method to notify the delegate that a layer successfully loaded. This method will also post a "LayerDidLoad" notification that can be observed by the developer.
- (NSOperation<AGSTileOperation>*) retrieveImageAsyncForTile: | (AGSTile *) | tile |
Retrieve tile asynchronously. This method must be implemented by subclasses.
tile | The tile to get image for. |
NSOperation
that implements the protocol AGSTileOperation
for current tile request. - (UIView<AGSLayerDelegate>*) delegate [read, write, assign, inherited] |
Delegate to be notified when the layer is loaded or fails to load. When this layer is loaded, a corresponding AGSLayerView
object is automatically set as the delegate. This delegate must not be replaced.
- (NSError*) error [read, retain, inherited] |
Information about the error associated with a layer.
- (AGSEnvelope*) fullEnvelope [read, assign, inherited] |
Full extent of the layer.
Implemented in AGSBingMapLayer, AGSGPResultLayer, and AGSOpenStreetMapLayer.
- (AGSEnvelope*) initialEnvelope [read, assign, inherited] |
Initial extent of the layer.
Implemented in AGSBingMapLayer, AGSGPResultLayer, AGSGraphicsLayer, and AGSOpenStreetMapLayer.
- (BOOL) loaded [read, assign, inherited] |
A property indicating whether the layer is loaded and ready to be used. When the layer is loaded, the value becomes YES
, and layer properties can be accessed.
- (NSString*) name [read, retain, inherited] |
The name of the layer. This property will be set by the framework when the layer is added to the map.
- (NSOperationQueue*) operationQueue [read, retain] |
Operation queue used by tiled layer to make asynchronous requests. Default operation queue size is 4.
- (BOOL) renderNativeResolution [read, assign, inherited] |
Gets a value that determines if the layer renders at the native resolution. This property will not have any affect on iOS devices without a retina display. If using an iOS device with a retina display and you want to take advantage of that display you can set this value to YES. If YES, this layer will use more memory and network bandwidth, but the layer will render at a higher resolution. This property is not settable for every layer type.
Implemented in AGSGPResultLayer, AGSGraphicsLayer, AGSDynamicMapServiceLayer, AGSImageServiceLayer, AGSTiledMapServiceLayer, and AGSLocalTiledLayer.
- (AGSSpatialReference*) spatialReference [read, assign, inherited] |
The spatial reference of the layer.
Implemented in AGSBingMapLayer, AGSGPResultLayer, AGSOpenStreetMapLayer, and AGSWMSLayer.
- (id<AGSTiledLayerTileDelegate>) tileDelegate [read, write, assign] |
Delegate to be notified when a tile is retrieved asynchronously. When this layer is loaded, a corresponding View object is automatically set as the tileDelegate
which should not be replaced.
- (AGSTileInfo*) tileInfo [read, retain] |
Tiling scheme for the layer. This property must be implemented by subclasses.
Implemented in AGSBingMapLayer, and AGSOpenStreetMapLayer.
- (BOOL) timeAware [read, assign, inherited] |
A property indicating whether the layer is time-aware.
- (AGSUnits) units [read, write, assign, inherited] |
The units the layer is in. Possible values include
AGSUnitsCentimeters
AGSUnitsDecimalDegrees
AGSUnitsDecimeters
AGSUnitsFeet
AGSUnitsInches
AGSUnitsKilometers
AGSUnitsMeters
AGSUnitsMiles
AGSUnitsMillimeters
AGSUnitsNauticalMiles
AGSUnitsPoints
AGSUnitsUnknown
AGSUnitsYards