इस कोड का उपयोग
PlacePin.h
#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
@interface PlacePin : NSObject<MKAnnotation> {
CLLocationCoordinate2D coordinate;
NSString *title;
NSString *subtitle;
int nTag;
}
@property (nonatomic, readonly) CLLocationCoordinate2D coordinate;
@property (nonatomic,copy) NSString *title;
@property (nonatomic,copy) NSString *subtitle;
@property (nonatomic) int nTag;
- (id)initWithLocation:(CLLocationCoordinate2D)coord;
@end
PlacePin.m
#import "PlacePin.h"
@implementation PlacePin
@synthesize coordinate,title,subtitle;
@synthesize nTag;
- (id)initWithLocation:(CLLocationCoordinate2D)coord{
self = [super init];
if (self) {
coordinate = coord;
}
return self;
}
-(void)dealloc{
[title release];
[subtitle release];
[super dealloc];
}
@end
callingView.h
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import "PlacePin.h"
@interface ViewController : UIViewController<MKMapViewDelegate>{
NSMutableArray *Arr_Latitude;
CGFloat double_lat;
CGFloat double_long;
}
@property (retain, nonatomic) IBOutlet MKMapView *mapView;
-(void)zoomToFitMapAnnotations:(MKMapView*)mv;
@end
callingView.m
- (void)viewDidLoad
{
[super viewDidLoad];
//create demo latlong array
NSMutableArray *arrLat=[[NSMutableArray alloc] initWithObjects:@"23.0333",@"24.0333",@"25.0333",@"26.0333" ,nil];
NSMutableArray *arrLong=[[NSMutableArray alloc] initWithObjects:@"72.6167",@"71.6167",@"70.6167",@"71.6167", nil];
NSMutableArray *arrTitle=[[NSMutableArray alloc] initWithObjects:@"Point1",@"Point2",@"Point3",@"Point4", nil];
Arr_Latitude=[[NSMutableArray alloc] init];
for(int i=0; i<[arrLat count];i++)
{
NSMutableDictionary *dictLatlong=[[NSMutableDictionary alloc] init];
[dictLatlong setObject:[arrLat objectAtIndex:i] forKey:@"Latitude"];
[dictLatlong setObject:[arrLong objectAtIndex:i] forKey:@"Longitude"];
[dictLatlong setObject:[arrTitle objectAtIndex:i] forKey:@"Title"];
[Arr_Latitude addObject:dictLatlong];
}
NSLog(@"--------------- %@",[Arr_Latitude description]);
[arrLat release];
[arrLong release];
mapView.delegate = self;
[mapView setMapType:MKMapTypeSatellite];
MKCoordinateRegion region;
MKCoordinateSpan span;
span.latitudeDelta=0.2;
span.longitudeDelta=0.2;
CLLocationCoordinate2D location;
region.span = span;
region.center = location;
for (int i = 0; i<[Arr_Latitude count]; i++)
{
double_lat = [[[Arr_Latitude objectAtIndex:i]valueForKey:@"Latitude"] doubleValue];
double_long = [[[Arr_Latitude objectAtIndex:i]valueForKey:@"Longitude"] doubleValue];
NSString *Title=[[Arr_Latitude objectAtIndex:i]valueForKey:@"Title"];
location.latitude = double_lat;
location.longitude = double_long;
PlacePin *mapPoint = [[PlacePin alloc] initWithLocation:location];
mapPoint.nTag = i;
[mapPoint setTitle:Title];
// mapPoint.title = [[locationArray objectAtIndex:i] Name];
[mapView addAnnotation:mapPoint];
mapPoint = nil;
[mapView setRegion:region animated:YES];
[mapView regionThatFits:region];
}
[self zoomToFitMapAnnotations:mapView];
}
-(void)zoomToFitMapAnnotations:(MKMapView*)mv
{
//NSLog(@"zoom To Fit Map Annotations");
if([mv.annotations count] == 0)
return;
if([mv.annotations count] == 1) {
MKCoordinateRegion region;
MKCoordinateSpan span;
span.latitudeDelta=0.2;
span.longitudeDelta=0.2;
for(PlacePin* annotation in mv.annotations){
CLLocationCoordinate2D location;
location.latitude = annotation.coordinate.latitude;
location.longitude = annotation.coordinate.longitude;
region.span=span;
region.center=location;
[mv setRegion:region animated:TRUE];
[mv regionThatFits:region];
}
}else {
CLLocationCoordinate2D topLeftCoord;
topLeftCoord.latitude = -90;
topLeftCoord.longitude = 180;
CLLocationCoordinate2D bottomRightCoord;
bottomRightCoord.latitude = 90;
bottomRightCoord.longitude = -180;
for(PlacePin* annotation in mv.annotations)
{
topLeftCoord.longitude = fmin(topLeftCoord.longitude, annotation.coordinate.longitude);
topLeftCoord.latitude = fmax(topLeftCoord.latitude, annotation.coordinate.latitude);
bottomRightCoord.longitude = fmax(bottomRightCoord.longitude, annotation.coordinate.longitude);
bottomRightCoord.latitude = fmin(bottomRightCoord.latitude, annotation.coordinate.latitude);
}
MKCoordinateRegion region;
region.center.latitude = topLeftCoord.latitude - (topLeftCoord.latitude - bottomRightCoord.latitude) * 0.5;
region.center.longitude = topLeftCoord.longitude + (bottomRightCoord.longitude - topLeftCoord.longitude) * 0.5;
region.span.latitudeDelta = fabs(topLeftCoord.latitude - bottomRightCoord.latitude) * 1.1; // Add a little extra space on the sides
region.span.longitudeDelta = fabs(bottomRightCoord.longitude - topLeftCoord.longitude) * 1.1; // Add a little extra space on the sides
region = [mv regionThatFits:region];
[mv setRegion:region animated:YES];
}
}
- (MKAnnotationView *)mapView:(MKMapView *)_mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
MKPinAnnotationView *pinView = nil;
if(annotation != mapView.userLocation)
{
static NSString *defaultPinID = @"com.invasivecode.pin";
pinView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:defaultPinID];
if ( pinView == nil )
pinView = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:defaultPinID] autorelease];
pinView.pinColor = MKPinAnnotationColorRed;
pinView.canShowCallout = YES;
pinView.animatesDrop = YES;
}
else {
[_mapView.userLocation setTitle:@"I am here"];
}
return pinView;
}
