iOS mapView添加多边形覆盖物层

- (void)viewDidLoad { [super viewDidLoad]; self.mapView.delegate = self; [self.mapView setCenterCoordinate:CLLocationCoordinate2DMake(40.161613, 116.672968) animated:YES]; MKCoordinateSpan span = MKCoordinateSpanMake(self.mapView.region.span.latitudeDelta * 0.01, self.mapView.region.span.longitudeDelta * 0.01); //设置地图范围 [self.mapView setRegion:MKCoordinateRegionMake(CLLocationCoordinate2DMake(40.161613, 116.672968), span) animated:YES]; //任意多边形 [self addPolygonOverlay]; //圆形 [self addCircleOverlay]; //绘制线的方法 [self pathOverLay]; } //任意多边形 - (void)addPolygonOverlay { const int allNum = 12; CLLocationCoordinate2D ploycoords[allNum] = { CLLocationCoordinate2DMake(40.2283333f, 116.5283333f), CLLocationCoordinate2DMake(40.2366667f, 116.6133333f), CLLocationCoordinate2DMake(40.1533333f, 116.6100000f), CLLocationCoordinate2DMake(40.0983333f, 116.6783333f), CLLocationCoordinate2DMake(40.0616667f, 116.6850000f), CLLocationCoordinate2DMake(39.9966667f, 116.6366667f), CLLocationCoordinate2DMake(39.9166667f, 116.6666667f), CLLocationCoordinate2DMake(39.9083333f, 116.5816667f), CLLocationCoordinate2DMake(39.9916667f, 116.5850000f), CLLocationCoordinate2DMake(40.0466667f, 116.5166667f), CLLocationCoordinate2DMake(40.0800000f, 116.5116667f), CLLocationCoordinate2DMake(40.1483333f, 116.5583333f) }; MKPolygon *polygonOverlay = [MKPolygon polygonWithCoordinates:ploycoords count:allNum]; [self.mapView addOverlay:polygonOverlay]; } //圆形 - (void)addCircleOverlay { MKCircle *circleOverlay = [MKCircle circleWithCenterCoordinate:CLLocationCoordinate2DMake(39.8166667f, 116.5666667f) radius:10000.0f]; [self.mapView addOverlay:circleOverlay]; } //绘制线的方法 - (void)pathOverLay { CLLocationCoordinate2D pathCoords[6] = { CLLocationCoordinate2DMake(40.2366667f, 116.6850000f), CLLocationCoordinate2DMake(40.2366667f, 116.7250000f), CLLocationCoordinate2DMake(40.1766667f, 116.8850000f), CLLocationCoordinate2DMake(40.0366667f, 116.7850000f), CLLocationCoordinate2DMake(39.9366667f, 116.8850000f), CLLocationCoordinate2DMake(39.8366667f, 116.9850000f) }; MKPolyline *pathOverlay = [MKPolyline polylineWithCoordinates:pathCoords count:6]; [self.mapView addOverlay:pathOverlay]; } #pragma mark - MKMapViewDelegate - (MKOverlayRenderer *)mapView:(MKMapView *)mapView rendererForOverlay:(id <MKOverlay>)overlay { MKPolygonRenderer *poly = nil; if ([overlay isKindOfClass:[MKPolygon class]] == YES) { poly = [[MKPolygonRenderer alloc] initWithOverlay:overlay]; poly.lineWidth = 1.0; CGFloat alphaFloat = 0.2; poly.strokeColor = [[UIColor redColor] colorWithAlphaComponent:1.0]; poly.fillColor = [[UIColor greenColor] colorWithAlphaComponent:alphaFloat]; } else if ([overlay isKindOfClass:[MKCircle class]] == YES) { MKCircleRenderer *circle = [[MKCircleRenderer alloc] initWithOverlay:overlay]; circle.lineWidth = 1.0; CGFloat alphaFloat = 0.2; circle.strokeColor = [[UIColor redColor] colorWithAlphaComponent:1.0]; circle.fillColor = [[UIColor greenColor] colorWithAlphaComponent:alphaFloat]; return circle; } else if ([overlay isKindOfClass:[MKPolyline class]] == YES) { MKPolylineRenderer *line = [[MKPolylineRenderer alloc] initWithOverlay:overlay]; line.lineWidth = 2; line.strokeColor = [UIColor orangeColor]; return line; } return poly; }