Question

I feel bad for asking this because it seems to be such a simple thing to get hung up on, but I’ve looked at every relevant resource I could, tried as many of the combinations for solutions that i’ve seen others use, and nothing has worked…

I am trying to iterate through some XML that I recieve and parse out the Latitude and Longitude of a coordinate in the XML, and store it in an array from which I will then plot it.

My problem is that no matter what type I use, how I cast it, what have you, xcode ALWAYS finds some sort of issue with it.

Relevant part of my .h file:

CLLocationCoordinate2D Coord;
CLLocationDegrees lat;
CLLocationDegrees lon;

@property (nonatomic, readwrite) CLLocationCoordinate2D Coord;
@property (nonatomic, readwrite) CLLocationDegrees lat;
@property (nonatomic, readwrite) CLLocationDegrees lon;

Relevant part of my .m file:

else if ([elementName isEqualToString:@"Lat"]) {
        checkpoint.lat = [[attributeDict objectForKey:@"degrees"] integerValue];
}
else if ([elementName isEqualToString:@"Lon"]) {
    checkpoint.lon = [[attributeDict objectForKey:@"degrees"] integerValue];
}
else if ([elementName isEqualToString:@"Coord"]) {
    checkpoint.Coord = [[CLLocation alloc] initWithLatitude:checkpoint.lat longitude:checkpoint.lon];
}

The current error that I am getting is: “Assigning to ‘CLLocationCoordinate2D from incompatible type ‘id”. I take that to mean that the return value of the initialization function is incorrect, but I have no idea why since its a built in function…

I have also tried what would make the most sense to me that I saw someone else doing:

checkpoint.Coord = CLLocationCoordinate2DMake(checkpoint.lat, checkpoint.lon);

While that returns no immediate errors, when I try to build and run it gives me:

Undefined symbols for architecture i386:
“_CLLocationCoordinate2DMake”, referenced from:
-[XMLParser parser:didStartElement:namespaceURI:qualifiedName:attributes:] in Checkpoint.o
ld: symbol(s) not found for architecture i386
collect2: ld returned 1 exit status

Any help/clarification/nudges in the right direction would be very much appreciated because I am very out of ideas at this point.

Answer 1

What made the most sense to you (CLLocationCoordinate2DMake) is correct. You just forgot to include the CoreLocation framework in your project.

And, as others have pointed out, your lat/lon in your file are probably not integers.