MapView programe in iPhone

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1. Create a new project (ViewBased application )
2. Import the MapKit in header file...
#import <MapKit/MapKit.h> 
also add the MapKit.framework under resources folder from the existing frameworks.
3. In the same viewController's header file call the <MKMapViewDelegate> and define the MKMapView *myMapView; synthesize and release the myMapView object into implementation file.
4. In a viewcontroller.xib file ..add the map view on UIView and connect it with corresponding object in file owner. Further see the code given below….
Header
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
@interface myMapViewController : UIViewController <MKMapViewDelegate> {

IBOutlet MKMapView* myMapView;
}
@property (nonatomic, retain) IBOutlet MKMapView* myMapView;
-(void)displayMYMap;
@end
Implementation
#import "myMapViewController.h"
@implementation myMapViewController
@synthesize myMapView;
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];

myMapView = [[MKMapView alloc] initWithFrame:self.view.bounds];
myMapView.delegate=self;

[self.view addSubview:myMapView];
[NSThread detachNewThreadSelector:@selector(displayMYMap) toTarget:self withObject:nil];

}

-(void)displayMYMap
{
MKCoordinateRegion region;
MKCoordinateSpan span;
span.latitudeDelta=0.2;
span.longitudeDelta=0.2;

CLLocationCoordinate2D location;

location.latitude = 22.569722 ;
location.longitude = 88.369722;


region.span=span;
region.center=location;

[myMapView setRegion:region animated:TRUE];
[myMapView regionThatFits:region];
}

- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];

// Release any cached data, images, etc that aren't in use.
}

- (void)dealloc {
[super dealloc];
[myMapView release];
}
@end
 
click here for code 

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