Question

I’m trying to create then retrieve an array of CLLocationCoordinate2D objects, but for some reason the array is always empty.

I have:

NSMutableArray *currentlyDisplayedTowers;
CLLocationCoordinate2D new_coordinate = { currentTowerLocation.latitude, currentTowerLocation.longitude };
[currentlyDisplayedTowers addObject:[NSData dataWithBytes:&new_coordinate length:sizeof(new_coordinate)] ];

I’ve also tried this for adding the data:

[currentlyDisplayedTowers addObject:[NSValue value:&new_coordinate withObjCType:@encode(struct CLLocationCoordinate2D)] ];

And either way, the [currentlyDisplayedTowers count] always returns zero. Any ideas what might be going wrong?

Thanks!

Answer 1

To stay in object land, you could create instances of CLLocation and add those to the mutable array.

CLLocation *towerLocation = [[CLLocation alloc] initWithLatitude:lat longitude:lon];
[currentDisplayedTowers addObject:towerLocation];

To get the CLLocationCoordinate struct back from CLLocation, call coordinate on the object.

CLLocationCoordinate2D coord = [[currentDisplayedTowers lastObject] coordinate];