AGSLayer Class Reference
Description
A base class for all layers, tiled or dynamic. Sub-classes must provide implementation for the spatialReference, fullEnvelope, initialEnvelope, and units properties declared by this class. They must also update the loaded property and notify the delegate when appropriate.
Will fire notifications for LayerDidLoad and LayerFailedToLoad.
- Defined in:
- AGSLayer.h ( ArcGIS library)
- Since:
- 1.0
Public Member Functions | |
| (void) | - dataChanged |
| (void) | - layerDidFailToLoad: |
| (void) | - layerDidLoad |
Properties | |
| id< AGSLayerDelegate > | delegate |
| NSError * | error |
| AGSEnvelope * | fullEnvelope |
| AGSEnvelope * | initialEnvelope |
| BOOL | loaded |
| NSString * | name |
| AGSSpatialReference * | spatialReference |
| BOOL | timeAware |
| AGSUnits | units |
Member Function Documentation
| - (void) dataChanged |
This method tells the layer that the data has changed and it should be redrawn.
- Since:
- 1.0
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.
- Parameters:
-
error Information regarding the cause of the layer failing to load.
- Since:
- 1.0
| - (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.
- Since:
- 1.0
Property Documentation
- (id<AGSLayerDelegate>) delegate [read, write, assign] |
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.
- Since:
- 1.0
- (NSError*) error [read, retain] |
Information about the error associated with a layer.
- Since:
- 1.0
- (AGSEnvelope*) fullEnvelope [read, assign] |
Full extent of the layer.
- Since:
- 1.0
Implemented in AGSBingMapLayer, AGSGPResultLayer, and AGSOpenStreetMapLayer.
- (AGSEnvelope*) initialEnvelope [read, assign] |
Initial extent of the layer.
- Since:
- 1.0
Implemented in AGSBingMapLayer, AGSGPResultLayer, AGSGraphicsLayer, and AGSOpenStreetMapLayer.
- (BOOL) loaded [read, assign] |
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.
- Since:
- 1.0
- See also:
- AGSLayerDelegate
- (NSString*) name [read, retain] |
The name of the layer. This property will be set by the framework when the layer is added to the map.
- Since:
- 1.8
- (AGSSpatialReference*) spatialReference [read, assign] |
The spatial reference of the layer.
- Since:
- 1.0
Implemented in AGSBingMapLayer, AGSGPResultLayer, and AGSOpenStreetMapLayer.
- (BOOL) timeAware [read, assign] |
A property indicating whether the layer is time-aware.
- Since:
- 1.0
- (AGSUnits) units [read, write, assign] |
The units the layer is in. Possible values include
AGSUnitsCentimetersAGSUnitsDecimalDegreesAGSUnitsDecimetersAGSUnitsFeetAGSUnitsInchesAGSUnitsKilometersAGSUnitsMetersAGSUnitsMilesAGSUnitsMillimetersAGSUnitsNauticalMilesAGSUnitsPointsAGSUnitsUnknownAGSUnitsYards
- Since:
- 1.0