annotations - NSArray - How to do this? - objective-c

Question

I would like to annotations in a Mapview, using data fetched Json via a URL.
As might do?
NSMutableArray *annotations = [[NSMutableArray alloc]init];
NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:#"http://example.com/LData.php"]];
//Data: Longitud/Latitud/Country;.....
NSString *str = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
NSLog(str);
[foo removeAllObjects];
NSArray *foo2 =[str componentsSeparatedByString: #";"];
int i=0;
for(i=0;i<[foo2 count]; i++){
[foo insertObject:[foo2 objectAtIndex:i] atIndex:i];
NSArray *foo3 =[foo2 componentsSeparatedByString: #"/"];
So far so good
¿As I Lay to introduce the variables [i]?
CLLocationCoordinate2D theCoordinate[i];
theCoordinate1.latitude[i] = [foo3 objectAtIndex:1]);//Longitud
theCoordinate1.longitude[i] = [foo3 objectAtIndex:2]);//Latitud
MyAnnotation* myAnnotation[i]=[[MyAnnotation alloc] init];
myAnnotation[i].coordinate=theCoordinate[i];
myAnnotation[i].title=#""+[foo3 objectAtIndex:3];
myAnnotation[i].subtitle=#"in the city";
[mapView addAnnotation:myAnnotation[i]];
[annotations addObject:myAnnotation[i]];
}
how I can solve this problem?

Answer 1

Why you are using different CLLocationCoordinate2D variables?
theCoordinate1.latitude[i] = [foo3 objectAtIndex:1]);//Longitud
theCoordinate1.longitude[i] = [foo3 objectAtIndex:2]);//Latitud
and then
myAnnotation[i].coordinate=theCoordinate[i];
I think you need to adjust you code and some problems can resolved by themselves.

Answer 2

NSMutableArray *annotations = [[NSMutableArray alloc]init];
NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:#"http://example.com/LData.php"]];
//Data: Longitud/Latitud/Country;.....
NSString *str = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
NSLog(str);
[foo removeAllObjects];
NSArray *foo2 =[str componentsSeparatedByString: #";"];
int i=0;
for(i=0;i<[foo2 count]; i++){
[foo insertObject:[foo2 objectAtIndex:i] atIndex:i];
NSArray *foo3 =[foo2 componentsSeparatedByString: #"/"];
float realLatitude = [[foo3 objectAtIndex:1] floatValue];//Longitud
float realLongitude = [[foo3 objectAtIndex:0] floatValue];//Latitud
MyAnnotation* myAnnotation = [[MyAnnotation alloc] init];
CLLocationCoordinate2D theCoordinate;
theCoordinate.latitude = realLatitude;
theCoordinate.longitude = realLongitude;
myAnnotation.coordinate = theCoordinate;
myAnnotation.title = [foo3 objectAtIndex:3];
//myAnnotation.subtitle = [note objectForKey:#"stationAddressKey"];
[_mapView setDelegate:self];
[_mapView addAnnotation:myAnnotation];
[myAnnotation release];
}
-(MKAnnotationView *)_mapView:(MKMapView *)aMapView viewForAnnotation:(id<MKAnnotation>)annotation
{
if ([annotation isKindOfClass:[MyAnnotation class]])
{
static NSString *reuseId = #"customAnn";
MKAnnotationView *customAnnotationView = [aMapView dequeueReusableAnnotationViewWithIdentifier:reuseId];
if (customAnnotationView == nil)
{
customAnnotationView = [[[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:reuseId] autorelease];
UIImage *pinImage = [UIImage imageNamed:#"pin-green.png"];
[customAnnotationView setImage:pinImage];
customAnnotationView.canShowCallout = YES;
UIButton *rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
customAnnotationView.rightCalloutAccessoryView = rightButton;
}
// NSString *iconFilename = #"";
// MyAnnotation *myAnn = (MyAnnotation *)annotation;
// if ([myAnn.stationIdKey isEqualToString:#"BP"])
iconFilename = #"bp-logo.png";
// else
// if ([myAnn.stationIdKey isEqualToString:#"Caltex"])
// iconFilename = #"caltex.png";
// else
// if ([myAnn.stationIdKey isEqualToString:#"Shell"])
// iconFilename = #"shell.png";
// UIImageView *leftIconView = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:iconFilename]] autorelease];
customAnnotationView.leftCalloutAccessoryView = leftIconView;
customAnnotationView.annotation = annotation;
return customAnnotationView;
}
return nil;
}
-(void)_mapView:(MKMapView *)_mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{ if ([view.annotation isKindOfClass:[MyAnnotation class]])
{
MyAnnotation *myAnn = (MyAnnotation *)view.annotation;
NSLog(#"callout button tapped for station id %#", myAnn.stationIdKey);
}
else
{
NSLog(#"callout button tapped for annotation %#", view.annotation);
} }
Is correct this?