Mapkit Add a Pin

#import "ViewController.h"

#import <MapKit/MapKit.h>

#import "MYAnnotation.h"

@interface Viewcontroller () <mkmapviewdelegate>

@property(nonatomic,strong)Cllocationmanager *mag;

@property(nonatomic,strong)clgeocoder *ceocoder;

@property(nonatomic,strong)Mkmapview*mapview;

@end

@implementation Viewcontroller

-(mkmapview*) Mapview

{

if (! _mapview) {

_mapview=[[mkmapview alloc]init];

}

return _mapview;

}

-(void) viewdidload {

[Super viewdidload];

self. Mag=[[cllocationmanager alloc]init];

[self. Mag requestalwaysauthorization];

[self. Mag requestwheninuseauthorization];

// must be logged or user rights verification will not be performed

Cllocationmanager *mags=[[cllocationmanager Alloc]init];

[Mags requestalwaysauthorization];

[Mags requestwheninuseauthorization];

self. Mapview. Frame=self. View. Bounds;

//self.mapview.visiblemaprect=mkmaprectmake (a);

[self. View addsubview:self. Mapview];

// set up a proxy for the map

self. Mapview. Delegate=self;

self. Mapview. Showsuserlocation=YES;

self. Mapview. Usertrackingmode=mkusertrackingmodefollow;

}

Update user Information

-(void) Mapview: (mkmapview *) Mapview didupdateuserlocation: (mkuserlocation *) userlocation

{

[self. Ceocoder reversegeocodelocation: userlocation. Location completionhandler: ^ (nsarray *placemarks, nserror *error) {

clplacemark *mark=[placemarks firstobject];

Userlocation. title=mark. Name;

Userlocation. subtitle=mark. Locality;

}];

// Set the area of the map display

cllocationcoordinate2d center=userlocation. Location. coordinate;

// specify latitude and longitude span

mkcoordinatespan span=mkcoordinatespanmake(a );

// Use the user's current location as the center

mkcoordinateregion region=mkcoordinateregionmake(center, Span);

// Set display area

[self. Mapview setregion: Region animated:YES];

}

Load a pin

-(mkannotationview *) Mapview: (mkmapview *) Mapview viewforannotation: (ID< Mkannotation>) annotation

{

if ([annotation iskindofclass: [mkuserlocation class]]) {

return nil;

}

static nsstring*id=@ "anno";

mkpinannotationview *annotationview= (mkpinannotationview*) [Mapview Dequeuereusableannotationviewwithidentifier: ID];

if (annotationview==nil) {

annotationview=[[mkpinannotationview alloc]initwithannotation: annotation Reuseidentifier: ID];

}

// Set the color of the pin

Annotationview. Pincolor=mkpinannotationcolorpurple;

// Set pin animation

Annotationview. Animatesdrop=YES;

return Annotationview;

}

-(void) Touchesbegan: (nsset *) touches withevent: (uievent *) event

{

cgpoint point=[[touches anyobject] locationinview:self. Mapview];

cllocationcoordinate2d coordinate=[self. Mapview convertpoint:p oint tocoordinatefromview:self. Mapview];

// Add a pin

myannotation *anno=[[myannotation alloc]init];

Anno. title=@ " what you want ";

Anno. subtitle=@ " can parse out position with Clgeocoder ";

Anno. coordinate=coordinate;

[self. Mapview addannotation: anno];

} 

@end

#import <Foundation/Foundation.h>

#import <MapKit/MapKit.h>

@interface myannotation: nsobject<mkannotation>

@property(nonatomic,assign)cllocationcoordinate2d coordinate;

@property(nonatomic,copy)nsstring*title;

@property(nonatomic,copy)nsstring*subtitle;

@end

@implementation myannotation

@end

Mapkit Add a Pin