想在MapView中添加Polyline。代码如下:
CLLocationCoordinate2D coord[2];
coord[1].latitude = 45.42207;
coord[1].longitude = 9.123888;
coord[2].latitude = 45.422785;
coord[2].longitude = 9.12377;
MKPolyline *polyline = [[MKPolyline alloc] init];
polyline = [MKPolyline polylineWithCoordinates:coord count:2];
[self.mapView addAnnotation:polyline];
但是报错: EXC_BAD_ACCESS.