ArcGIS API for iOS 实例源代码 GeometryServiceTaskDemo

// Copyright 2010 ESRI // // All rights reserved under the copyright laws of the United States // and applicable international laws, treaties, and conventions. // // You may freely redistribute and use this sample code, with or // without modification, provided you include the original copyright // notice and use restrictions. // // See the use restrictions at http://help.arcgis.com/en/sdk/10.0/usageRestrictions.htm // #import <UIKit/UIKit.h> #import "ArcGIS.h" #define kBaseMapService @"http://services.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer" #define kGeometryBufferService @"http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer/buffer" #define kesriSRUnit_SurveyMile 9035 #define kesriSRUnit_Meter 9001 #define kWebMercator 102100 @interface GeometryServiceSampleViewController : UIViewController < AGSGeometryServiceTaskDelegate, AGSMapViewDelegate > { UINavigationBar *_navBar; UIButton *_goBtn; UIButton *_clearGraphicsBtn; UIView *_statusView; UILabel *_statusLabel; /* label that informs user to click points/number of pts clicked */ AGSMapView *_mapView; AGSGraphicsLayer *_graphicsLayer; NSMutableArray *_geometryArray; /* holds on to the buffered geometries until "clear" clicked */ NSInteger _numPoints; /* keeps track of the number of points the user has clicked */ NSMutableArray *_pushpins; /* holds on to the pushpins that mark where the user clicks */ AGSGeometryServiceTask *_gst; /* The Geometry Service Task we will use to execute operations */ } @property (nonatomic, retain) IBOutlet UIButton *goBtn; @property (nonatomic, retain) IBOutlet UIButton *clearGraphicsBtn; @property (nonatomic, retain) IBOutlet UINavigationBar *navBar; @property (nonatomic, retain) IBOutlet UIView *statusView; @property (nonatomic, retain) IBOutlet UILabel *statusLabel; @property (nonatomic, retain) IBOutlet AGSMapView *mapView; @property (nonatomic, retain) AGSGraphicsLayer *graphicsLayer; @property (nonatomic, retain) NSMutableArray *geometryArray; @property (nonatomic, retain) NSMutableArray *pushpins; @property (nonatomic, retain) AGSGeometryServiceTask *gst; /* Called when the user clicks the "Go" button on the UINavigation Bar * Kicks off the Geometry Service Task given the user has selected >= 1 point */ - (IBAction)goBtnClicked:(id)sender; /* Clears all of the graphics from the view */ - (IBAction)clearGraphicsBtnClicked:(id)sender; @end