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POHow to store CLLocationCoordinate2D?
 

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  1. POHow to store CLLocationCoordinate2D?
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    <p>I'm attempting to build an application that builds and saves routes similar to map my run. I'm using the <a href="https://developer.apple.com/library/ios/#samplecode/Breadcrumb/Introduction/Intro.html#//apple_ref/doc/uid/DTS40010048">Breadcrumb</a> sample code, specifically the <code>CrumbPath</code> and <code>CrumbPathView</code> as the base of my routes, from Apple. Two questions: </p> <ol> <li><p>If I try to access the <code>MKMapPoint *points</code> object of the <code>CrumbPath</code> like so:</p> <pre><code>[_route lockForReading]; NSLog(@"%@", _route.points); NSLog(@"%d", _route.pointCount); [_route unlockForReading]; </code></pre> <p>my app crashes, saying:</p> <pre><code>Thread 1: EXC_BAD_ACCESS (code: 1, address: 0x9450342d) </code></pre> <p>Which I have a hard time understanding, because within the <code>CrumbPath.m</code> file, the folks at apple write to the "array" by explicitly acquiring the write lock, and then unlocking it, but if I acquire the read lock and attempt to read from it, it crashes.</p></li> <li><p>The reason I attempt to access the <code>points</code> is in an attempt to get the <code>MKMapPoints</code>, convert them to <code>CLLocationCoordinate2D</code> objects, and save them so I can redraw the <code>polyline</code> at the user's request. Since I cannot get access to the <code>points</code>, I attempt to save the <code>CLLocationCoordinate2D</code> objects from my <code>locationManager</code> that I send to the <code>_route</code> in an array to upload to my <a href="http://parse.com">Parse</a> backend, but I always get an error saying:</p> <pre><code>Sending 'CLLocationCoordinate2D' to parameter of incompatible type 'id' </code></pre> <p>Which isn't making this any easier. Does anybody have any insight to why I'm getting these errors?</p></li> </ol> <p><strong>Location Manager Delegate</strong></p> <pre><code>-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations { if (_userLocation.longitude != manager.location.coordinate.longitude &amp;&amp; _userLocation.latitude != manager.location.coordinate.latitude) { _userLocation = manager.location.coordinate; } if (_isRecording) { if (!_route) { NSLog(@"lat: %f, lng: %f", _userLocation.latitude, _userLocation.longitude); _route = [[CrumbPath alloc] initWithCenterCoordinate:_userLocation]; [_mapView addOverlay:_route]; MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(_userLocation, 2000, 2000); [_mapView setRegion:region animated:YES]; }else { MKMapRect updateRect = [_route addCoordinate:_userLocation]; if (!MKMapRectIsNull(updateRect)) { MKZoomScale currentZoomScale = (CGFloat)(_mapView.bounds.size.width / _mapView.visibleMapRect.size.width); CGFloat lineWidth = MKRoadWidthAtZoomScale(currentZoomScale); updateRect = MKMapRectInset(updateRect, -lineWidth, -lineWidth); [_routeView setNeedsDisplayInMapRect:updateRect]; } } [_routePoints addObject:_userLocation]; [_route lockForReading]; NSLog(@"%d", _route.pointCount); NSLog(@"%@", _route.points); [_route unlockForReading]; } } </code></pre> <p><strong>Stop Recording Logic</strong></p> <pre><code> //stop recording NSLog(@"STOP"); if (_route) { NSLog(@"There is a route"); //Show route options toolbar [_route lockForReading]; NSLog(@"%@", _route); NSLog(@"%d", _route.pointCount); NSLog(@"%@", _route.points); PFObject *routeToSave = [PFObject objectWithClassName:@"Routes"]; //[routeToSave setObject:_route forKey:@"routePoints"]; [_route unlockForReading]; [routeToSave saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) { if (!error) { NSLog(@"%c", succeeded); }else { NSLog(@"%@", error); } }]; } </code></pre>
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    1. CO`NSLog(@"%@", _route.pointCount);` is this an integer? Then you should use `%d`
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      1. USiDev
    2. COwell, yeah. sorry, I typed this up real quick. It still doesn't work.
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    3. COIs it crashing even after that? and how are you calling the method with `CLLocationCoordinate2D` objects? Can you post that code?
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