CLLocationCoordinate2DMake(33.23, 113.122), MKCoordinateSpanMake(10, 10)); _mapView.delegate=self; //创建圆形覆盖物对象 MKCircle * cirle = [MKCircle circleWithCenterCoordinate:CLLocationCoordinate2DMake(33.23, 113.122) radius:500
currentAnnotationView; @property (nonatomic, strong) UILabel *addressLb; @property (nonatomic, strong) MKCircle