iPhone地图开发(mapkit).ppt

an intro to mapkit,rob caporetto rob_caporetto,the plan,what is mapkit? adding mapkit to your iphone application setting the position annotations geocoding interacting with core location,what is mapkit?,embed maps in your app,adding mapkit to your app,adding mapkit to your app,add the mapkit & corelocation frameworks create a view controller which implements mkmapviewdelegate create an mkmapview instance and connect to the controller,setting the position,set the region property defines the center point and a span span defines the vertical & horizontal distance to display,setting the position,- (void)viewdidload mkcoordinateregion region; region.center.latitude = eventvenue.latitude doublevalue; region.center.longitude = eventvenue.longitude doublevalue; region.span.latitudedelta = 0.0039; region.span.longitudedelta = 0.0034; mapview.region = region; ,annotations,annotations,allow you to add places-of-interest to a map implemented with a model & a view,annotation models,implement the mkannotation protocol exposes a title, subtitle, and coordinate,annotation views,use mkannotationview easiest trick to set the image property use mkpinannotationview if you want the pin,managing annotation views,managed like uitableviewcells,managing annotation views,- (mkannotationview *)mapview:(mkmapview *)themapview viewforannotation:(id )annotation mkpinannotationview *annotationview = (mkpinannotationview *)(themapview dequeuereusableannotationviewwithidentifier:“annotation“); if (annotationview = null) annotationview = mkpinannotationview alloc initwithannotation:annotation reuseidentifier:“annotation“ autorelease; annotationview.canshowcallout = yes; annotationview.animatesdrop = yes; annotationview.annotation = annotation; return annotationview; ,geocoding,geocoding,convert landmarks into longitude/latitude and vice-versa sdk 3.0 supports reverse geocoding only,reverse geocoding,use mkreversegeocoder requires network access (wifi/3g/edge) asynchronous lookups,interacting with core location,showing the users location,set the showsuserlocation property on the mapview instance implement an annotation,showing the users location,- (void)viewdidload / other initialisation mapview.showsuserlocation = yes; ,showing the users location,- (mkannotationview *)mapview:(mkmapview *)themapview viewforannotation:(id )annotation / checks to see if we are going to add the annotation for the userss location. / if this is the case, then we dont bother with creating an annotation and let / the platform give us the blue dot. if (annotation = mapview.userlocation) return nil; / configuring other annotations ,r