'MyAnnotation' may not respond to 'initWithDictionary:' - iphone

Question

I keep getting this semantic issue with this code ('MyAnnotation' may not respond to 'initWithDictionary:'), im adding annotations to a map using a plist.
Even though it displays the pin and everything i want it to, i get an semantic issue and cant seem to solve the problem
if anyone could help that would be great thanks
heres the code, the problem is in the //BrewMapViewController.m the error is on this line
MyAnnotation *annotation = [[MyAnnotation alloc] initWithDictionary:breweryDict];
/*MyAnnotation.h*/
#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
#interface MyAnnotation : NSObject <MKAnnotation> {
CLLocationCoordinate2D coordinate;
NSString *title;
NSString *subtitle;
NSString *test;
}
#property (nonatomic, readonly) CLLocationCoordinate2D coordinate;
#property (nonatomic, copy) NSString *title;
#property (nonatomic, copy) NSString *subtitle;
#property (nonatomic, copy) NSString *test;
#end
/*MyAnnotation.m*/
#import "MyAnnotation.h"
#implementation MyAnnotation
#synthesize coordinate, title, subtitle, test;
- (id) initWithDictionary:(NSDictionary *) dict
{
self = [super init];
if (self != nil) {
coordinate.latitude = [[dict objectForKey:#"latitude"] doubleValue];
coordinate.longitude = [[dict objectForKey:#"longitude"] doubleValue];
self.title = [dict objectForKey:#"name"];
self.subtitle = [dict objectForKey:#"address"];
self.test = [dict objectForKey:#"test"];
}
return self;
}
#end
/*BrewMapViewController.h*/
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#interface BrewMapViewController : UIViewController <MKMapViewDelegate> {
IBOutlet MKMapView *map;
NSArray *breweries;
}
#end
/*BrewMapViewController.m*/
#import "BrewMapViewController.h"
#import "MyAnnotation.h"
#implementation BrewMapViewController
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
breweries = [[NSArray alloc] initWithContentsOfFile:[[NSBundle mainBundle]
pathForResource:#"test"
ofType:#"xml"]];
double minLat = [[breweries valueForKeyPath:#"#min.latitude"] doubleValue];
double maxLat = [[breweries valueForKeyPath:#"#max.latitude"] doubleValue];
double minLon = [[breweries valueForKeyPath:#"#min.longitude"] doubleValue];
double maxLon = [[breweries valueForKeyPath:#"#max.longitude"] doubleValue];
MKCoordinateRegion region;
region.center.latitude = (maxLat + minLat) / 2.0;
region.center.longitude = (maxLon + minLon) / 2.0;
region.span.latitudeDelta = (maxLat - minLat) * 1.05;
region.span.longitudeDelta = (maxLon - minLon) * 1.05;
map.region = region;
for (NSDictionary *breweryDict in breweries){
MyAnnotation *annotation = [[MyAnnotation alloc] initWithDictionary:breweryDict];
[map addAnnotation:annotation];
[annotation release];
}
}
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation{
if (map.userLocation == annotation){
return nil;
}
NSString *identifier = #"MY_IDENTIFIER";
MKAnnotationView *annotationView = [map dequeueReusableAnnotationViewWithIdentifier:identifier];
if (annotationView == nil){
annotationView = [[[MKAnnotationView alloc] initWithAnnotation:annotation
reuseIdentifier:identifier]
autorelease];
annotationView.image = [UIImage imageNamed:#"beer.png"];
annotationView.canShowCallout = YES;
annotationView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
annotationView.leftCalloutAccessoryView = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:#"pretzel.png"]] autorelease];
}
return annotationView;
}
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
NSLog(#"I've been tapped");
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return YES;
}
- (void)dealloc {
[breweries release];
[map release];
[super dealloc];
}
#end

Answer 1

You have to put the method signature for - (id) initWithDictionary:(NSDictionary *) dict into your header file in order to tell BrewMapViewController that the method exists:
/*MyAnnotation.h*/
#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
#interface MyAnnotation : NSObject <MKAnnotation> {
CLLocationCoordinate2D coordinate;
NSString *title;
NSString *subtitle;
NSString *test;
}
#property (nonatomic, readonly) CLLocationCoordinate2D coordinate;
#property (nonatomic, copy) NSString *title;
#property (nonatomic, copy) NSString *subtitle;
#property (nonatomic, copy) NSString *test;
- (id) initWithDictionary:(NSDictionary *) dict;
#end