help with multiple images for mapkit annotations - annotations

Question

Very new to xcode and somewhat confused. I was able to use a custom image for annotation - works fine. Problem is that I want to do is have a different images for each of the annotations. What should I add/change to the code below? Thanks in advance and remember, I'm a newbee!
#import "MapViewController.h"
#interface AddressAnnotation : NSObject<MKAnnotation> {
CLLocationCoordinate2D coordinate;
NSString *mTitle;
NSString *mSubTitle;
UIImage *image;
}
#property (nonatomic, retain) UIImage *image;
#end
#implementation AddressAnnotation
#synthesize coordinate;
#synthesize image;
- (NSString *)subtitle{
return mSubTitle;
}
- (NSString *)title{
return mTitle;
}
-(id)initWithCoordinate:(CLLocationCoordinate2D) c Title: (NSString *)title SubTitle: (NSString *) subTitle{
coordinate=c;
mTitle = [title retain];
mSubTitle = [subTitle retain];
NSLog(#"%f,%f",c.latitude,c.longitude);
return self;
}
-(void) dealloc{
[super dealloc];
[mTitle release];
[mSubTitle release];
}
#end
#implementation MapViewController
// The designated initializer. Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
/*
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization.
}
return self;
}
*/
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
//------ To Set center of the map ------
CLLocationCoordinate2D center;
center.latitude = 37.83792;
center.longitude = -122.247865;
MKCoordinateRegion region;
MKCoordinateSpan span;
span.latitudeDelta = 0.05;
span.longitudeDelta = 0.05;
region.center = center;
region.span = span;
[mapView setRegion:region animated:YES];
//------ To Add a point of interest ------
CLLocationCoordinate2D c1;
// Point one
c1.latitude = 37.8393624;
c1.longitude = -122.2436549;
AddressAnnotation* ad1 = [[AddressAnnotation alloc] initWithCoordinate:c1 Title:#"title here" SubTitle:#"subtitle here"];
ad1.image = [UIImage imageNamed:#"img01.png"];
[mapView addAnnotation:ad1];
[ad1 release];
// Point two
c1.latitude = 37.835964;
c1.longitude = -122.250538;
AddressAnnotation* ad2 = [[AddressAnnotation alloc] initWithCoordinate:c1 Title:#"title here" SubTitle:#"subtitle here"];
ad2.image = [UIImage imageNamed:#"img02.png"];
[mapView addAnnotation:ad2];
[ad2 release];
// Point three
c1.latitude = 37.8317039;
c1.longitude = -122.2454169;
AddressAnnotation* ad3 = [[AddressAnnotation alloc] initWithCoordinate:c1 Title:#"title here" SubTitle:#"subtitle here"];
ad3.image = [UIImage imageNamed:#"img03.png"];
[mapView addAnnotation:ad3];
[ad3 release];
//----------------------------------------
}
- (MKAnnotationView *)mapView:(MKMapView *)theMapView viewForAnnotation:(id <MKAnnotation>)annotation
{
if ([annotation isKindOfClass:[AddressAnnotation class]])
{
static NSString *AnnotationIdentifier = #"AnnotationIdentifier";
MKPinAnnotationView *pinView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:AnnotationIdentifier];
if (!pinView)
{
pinView = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:AnnotationIdentifier] autorelease];
pinView.canShowCallout = YES;
pinView.animatesDrop = YES;
}
else
{
pinView.annotation = annotation;
}
UIImageView *leftCalloutView = [[UIImageView alloc]
initWithImage:((AddressAnnotation *)annotation).image];
pinView.leftCalloutAccessoryView = leftCalloutView;
[leftCalloutView release];
return pinView;
}
return nil;
}
/*
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations.
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
*/
- (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)viewDidUnload {
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[super dealloc];
}
#end

Answer 1

To display your own image instead of the standard pin, create a plain MKAnnotationView instead of a MKPinAnnotationView and set its image property instead of the leftCalloutAccessoryView:
- (MKAnnotationView *)mapView:(MKMapView *)theMapView viewForAnnotation:(id <MKAnnotation>)annotation
{
if ([annotation isKindOfClass:[AddressAnnotation class]])
{
static NSString *AnnotationIdentifier = #"AnnotationIdentifier";
MKAnnotationView *pinView = [mapView dequeueReusableAnnotationViewWithIdentifier:AnnotationIdentifier];
if (!pinView)
{
pinView = [[[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:AnnotationIdentifier] autorelease];
pinView.canShowCallout = YES;
}
else
{
pinView.annotation = annotation;
}
pinView.image = ((AddressAnnotation *)annotation).image;
return pinView;
}
return nil;
}
Note that the MKAnnotationView class doesn't have an animatesDrop property like MKPinAnnotationView so the annotations won't drop on the map. If a drop animation is required, it will have to be done manually (eg. in didAddAnnotationViews).