mkoverlay

I have an app to which I display routes on a map as MKPolyline. I made my search but I was unable to find a sample code on how to display custom MKPolyline callouts as Apple does on the ios6 maps: Can some help me? Thank you in advance.. Mindeater This appears to be The definive solution at the moment http://navarra.ca/?p=786 from this Question drawing routes on MKMapView 来源： https://stackoverflow.com/questions/16122833/custom-callouts-for-mkpolyline

I have added an overlay to my MKMapView using the addOverlay: method. The overlay was made using MKPolyline and stroked using MKPolylineView. The stroke color is blue, with an alpha value of 0.7. When the view initially loads, the overlay is drawn correctly but the surrounding areas of the overlay are blue as well... When I pinch & zoom out, the blue area is still there but it adjusts to my new zoom level. This is somewhat hard to describe... but basically I have a small rectangle of "normal map" trapped inside a larger rectangle that is blue. It will disappear when I zoom out to view the

I am implementing an iOS application, and I want to draw a polyline between several given coordinates on the map. I wrote the code and got the polylines being drawn from my point reaching an infinite point. In other words the beginning point of the line starts from the my given lat and long point, but the end of the line is infinite and not the other point. This is my code... I filled the coordinates in a NSMutableArray called routeLatitudes . The array cells are being filled one for latitude and one for longitude. MKMapPoint* pointArr = malloc(sizeof(CLLocationCoordinate2D) * [routeLatitudes

I need to display an MKOverlay on a map, but can't get it to actually appear. I'm following the example from Apple's Location Awareness Programming Guide and the overlay wont display. Any help would be greatly appreciated, this is the first iPhone app I've made, so I might be missing something simple. NavViewController.h #import <UIKit/UIKit.h> #import <MapKit/MapKit.h> @interface NavViewController : UIViewController <MKMapViewDelegate> { } @property (weak, nonatomic) IBOutlet MKMapView *mapView; @end NavViewController.m #import "MSUNavViewController.h" #import <CoreLocation/CoreLocation.h> -

How can I convert an MKCircle's radius (in meters) into a value I can use to draw a circle using core graphics in an MKOverlayPathView subclass? In the following code the radius is hardcoded to 50 but I need it to reflect the radius of the MKCircle. For the position I use MKMapPointForCoordinate() to convert the MKCircle's coordinate to an MKMapPoint, then convert the MKMapPoint to a point using MKOverlayPathView's pointForMapPoint:. But how can I convert the MKCircle's radius into a relative distance? MKCircle *circle = [self circleForLocation:location]; CGPoint relativePoint = [self

I'm having trouble with drawing a line on the map with a stroke. (inside color and outside color) I beleive i'm on the right path and have subclassed mkOverlayView to override the drawing (needs to fill with the road size) so inside drawMapRect... CGFloat lineWidth = MKRoadWidthAtZoomScale(zoomScale); MKMapRect clipRect = MKMapRectInset(mapRect, -lineWidth, -lineWidth); ... CGContextAddPath(context, path); CGContextSetStrokeColorWithColor(context, line.color.CGColor); CGContextSetLineJoin(context, kCGLineJoinRound); CGContextSetLineCap(context, kCGLineCapRound); CGContextSetLineWidth(context,

I am loading multiple MKPolylines as overlays onto an MKMapView . I would like to be able to distinguish these some how so change things like color, line width, etc. But, when viewForOverlay: gets called, it sees all my MKPolylines the same, which doesn't allow me to change any of them. - (MKOverlayView *)mapView:(MKMapView *)mapView viewForOverlay:(id <MKOverlay>)overlay { if ([overlay isKindOfClass:[MKPolyline class]]) { MKPolylineView *aView = [[[MKPolylineView alloc] initWithPolyline:(MKPolyline*)overlay] autorelease]; aView.strokeColor = [[UIColor blueColor] colorWithAlphaComponent:0.7];

After updating to iOS 6 I have noticed sever performance decreases when panning or zooming a MKMapView with multiple overlays. An app I created has approximately 600 polygon overlays of various colours, and ran lag-free (even on older iOS devices) on iOS 5, now runs extremely laggily (when zooming & panning) on iOS 6, even on the latest devices. My hunch is that this is due to the fact the device has to actually dynamically create the map (since its vector based) rather than just display tiles onscreen. Has anyone got any ideas to reduce the lag experienced when panning or zooming the map?