It the copy failing because these are read-only properties?
-Michael
On Feb 11, 2010, at 11:29 AM, Michael A. Crawford wrote:
> Here is the code (pertinent snippets)
>
> @interface BlueSLRGPS ()
> @property (copy) CLHeading* currentHeading;
> @property (copy) CLLocation* currentLocation;
> @property (retain) CLLocation* previousLocation;
>
> - (NSString*)compassPointForHeading:(double)heading;
>
> - (void)locationManager:(CLLocationManager*)manager
> didUpdateHeading:(CLHeading*)newHeading;
>
> - (void)locationManager:(CLLocationManager*)manager
> didUpdateToLocation:(CLLocation*)newLocation
> fromLocation:(CLLocation*)oldLocation;
>
> - (void)locationManager:(CLLocationManager*)manager
> didFailWithError:(NSError*)error;
> @end
>
> @synthesize currentHeading;
>
> - (void)locationManager:(CLLocationManager*)manager
> didUpdateHeading:(CLHeading*)newHeading
> {
> MCLog(@"heading update isMainThread = %d", [NSThread isMainThread]);
> MCLog(@"Heading: %f", newHeading.magneticHeading);
> self.currentHeading = newHeading;
> [self.delegate headingUpdated];
> }
>
> Here is the result.
>
> (gdb) p newHeading
> $1 = (CLHeading *) 0x481ef50
> (gdb) p currentHeading
> $2 = (CLHeading *) 0x3c193c0
> (gdb) po (CLHeading*)0x481ef50
> magneticHeading 211.00 trueHeading 205.17 accuracy 35.00 x 2.625 y -6.875 z
> -18.250 @ 2010-02-11 11:18:29 AM
> (gdb) po (CLHeading*)0x3c193c0
> magneticHeading 0.00 trueHeading 0.00 accuracy 0.00 x 0.000 y 0.000 z 0.000 @
> (null)
>
> I didn't see anything in the docs about CLHeading objects not being copyable.
> Any ideas as to why the copy did not duplicate the current values?
>
> -Michael
>
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