IOS6 IOS7 Mapkit draw Rout(地图划线)
IOS7 比较简单
CLLocationCoordinate2D _start2D;
CLLocationCoordinate2D _end2D;
NSArray *_routes;
IOS6
需要文件 ....google
#import "RegexKitLite.h"
UIImageView * _routeView;
NSArray *_routes;
load
if (IOS7) { // [_mapView setRegion:MKCoordinateRegionMake(_start2D, MKCoordinateSpanMake(0.05, 0.05))]; _routes = [self calculateRoutesFrom:_start2D to:_end2D] ; [self centerMap:_routes]; // //规划地图路径 [self requestRoutWithSoure:_start2D Destination:_end2D]; }else { _routeView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, _mapView.frame.size.width, _mapView.frame.size.height)]; _routeView.userInteractionEnabled = NO; [_mapView addSubview:_routeView]; if(_routes) { [_mapView removeAnnotations:[_mapView annotations]]; } _routes = [self calculateRoutesFrom:_start2D to:_end2D] ; //根据数组画线 [self updateRouteView:_routes RouteView:_routeView]; //根据线路确定呈现范围 [self centerMap:_routes]; }
ios7路径规划
#pragma mark - 请求路径 -(void)requestRoutWithSoure:(CLLocationCoordinate2D) start2D Destination:(CLLocationCoordinate2D)end2D { MKDirectionsRequest *directionsRequest = [[MKDirectionsRequest alloc] init]; directionsRequest.transportType = MKDirectionsTransportTypeAutomobile; MKPlacemark *startMark = [[MKPlacemark alloc] initWithCoordinate:start2D addressDictionary:nil]; MKPlacemark *endMark = [[MKPlacemark alloc] initWithCoordinate:end2D addressDictionary:nil]; MKMapItem *startItem = [[MKMapItem alloc] initWithPlacemark:startMark]; MKMapItem *endItem = [[MKMapItem alloc] initWithPlacemark:endMark]; [directionsRequest setSource:startItem]; [directionsRequest setDestination:endItem]; MKDirections *directions = [[MKDirections alloc] initWithRequest:directionsRequest]; //接收rout [directions calculateDirectionsWithCompletionHandler:^(MKDirectionsResponse *response, NSError *error) { if (!response) { return ; } _routes = [response routes]; [_routes enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) { MKRoute *rout = obj; MKPolyline *line = [rout polyline]; [_mapView addOverlay:line]; }]; //根据 routes 数据 确定region的呈现范围 //[self centerMap:_routes]; }]; }
ios7 回调
#pragma mark - ios7 mapView delegate - (MKAnnotationView *)mapView:(MKMapView *)theMapView viewForAnnotation:(id<MKAnnotation>)annotation { MKAnnotationView *annView; if (annotation == _startPoint) { //标注 annView = [[MKAnnotationView alloc] initWithAnnotation:_startPoint reuseIdentifier:@"_start2D"]; annView.image= [UIImage imageNamed:@"start_location"]; } if (annotation == _endPoint) { annView = [[MKAnnotationView alloc] initWithAnnotation:_endPoint reuseIdentifier:@"_end2D"]; annView.image= [UIImage imageNamed:@"end_location"]; } return annView; } -(MKOverlayRenderer *)mapView:(MKMapView *)mapView rendererForOverlay:(id<MKOverlay>)overlay { MKPolylineRenderer *renderer = [[MKPolylineRenderer alloc] initWithOverlay:overlay]; renderer.strokeColor = lineColor; renderer.lineWidth = lineW; return renderer; }
IOS6 路径规划 画线
#pragma mark - ios6 mapView -(NSArray*) calculateRoutesFrom:(CLLocationCoordinate2D) f to: (CLLocationCoordinate2D) t { NSString* saddr; NSString* daddr; saddr = [NSString stringWithFormat:@"%f,%f", f.latitude, f.longitude]; daddr = [NSString stringWithFormat:@"%f,%f", t.latitude, t.longitude]; NSString* apiUrlStr = [NSString stringWithFormat:@"http://maps.google.com/maps?output=dragdir&saddr=%@&daddr=%@", saddr, daddr]; NSURL* apiUrl = [NSURL URLWithString:apiUrlStr]; NSString *apiResponse = [NSString stringWithContentsOfURL:apiUrl encoding:NSASCIIStringEncoding error:nil]; NSString *encodedPoints = [apiResponse stringByMatching:@"points:\\\"([^\\\"]*)\\\"" capture:1L]; return [self decodePolyLine:[encodedPoints mutableCopy]:f to:t]; } //解码 -(NSMutableArray *)decodePolyLine: (NSMutableString *)encoded :(CLLocationCoordinate2D)f to: (CLLocationCoordinate2D) t { [encoded replaceOccurrencesOfString:@"\\\\" withString:@"\\" options:NSLiteralSearch range:NSMakeRange(0, [encoded length])]; NSInteger len = [encoded length]; NSInteger index = 0; NSMutableArray *array = [[NSMutableArray alloc] init]; NSInteger lat=0; NSInteger lng=0; while (index < len) { NSInteger b; NSInteger shift = 0; NSInteger result = 0; do { b = [encoded characterAtIndex:index++] - 63; result |= (b & 0x1f) << shift; shift += 5; } while (b >= 0x20); NSInteger dlat = ((result & 1) ? ~(result >> 1) : (result >> 1)); lat += dlat; shift = 0; result = 0; do { b = [encoded characterAtIndex:index++] - 63; result |= (b & 0x1f) << shift; shift += 5; } while (b >= 0x20); NSInteger dlng = ((result & 1) ? ~(result >> 1) : (result >> 1)); lng += dlng; NSNumber *latitude = [[NSNumber alloc] initWithFloat:lat * 1e-5]; NSNumber *longitude = [[NSNumber alloc] initWithFloat:lng * 1e-5]; CLLocation *loc = [[CLLocation alloc] initWithLatitude:[latitude floatValue] longitude:[longitude floatValue]]; [array addObject:loc]; } CLLocation *first = [[CLLocation alloc] initWithLatitude:[[NSNumber numberWithFloat:f.latitude] floatValue] longitude:[[NSNumber numberWithFloat:f.longitude] floatValue] ]; CLLocation *end = [[CLLocation alloc] initWithLatitude:[[NSNumber numberWithFloat:t.latitude] floatValue] longitude:[[NSNumber numberWithFloat:t.longitude] floatValue] ]; [array insertObject:first atIndex:0]; [array addObject:end]; return array; } //用routes数组的内容 确定region的呈现范围 -(void) centerMap:(NSArray *)routesArr { MKCoordinateRegion region; CLLocationDegrees maxLat = -90; CLLocationDegrees maxLon = -180; CLLocationDegrees minLat = 90; CLLocationDegrees minLon = 180; for(int idx = 0; idx < routesArr.count; idx++) { CLLocation* currentLocation = [routesArr objectAtIndex:idx]; if(currentLocation.coordinate.latitude > maxLat) maxLat = currentLocation.coordinate.latitude; if(currentLocation.coordinate.latitude < minLat) minLat = currentLocation.coordinate.latitude; if(currentLocation.coordinate.longitude > maxLon) maxLon = currentLocation.coordinate.longitude; if(currentLocation.coordinate.longitude < minLon) minLon = currentLocation.coordinate.longitude; } region.center.latitude = (maxLat + minLat) / 2; region.center.longitude = (maxLon + minLon) / 2; region.span.latitudeDelta = maxLat - minLat; region.span.longitudeDelta = maxLon - minLon; [_mapView setRegion:region animated:YES]; } //用routes数组的内容 在 UIImageView 上画线 -(void) updateRouteView:(NSArray *)routesArr RouteView:(UIImageView *)routeImg { CGContextRef context = CGBitmapContextCreate(nil, routeImg.frame.size.width, routeImg.frame.size.height, 8, 4 * routeImg.frame.size.width, CGColorSpaceCreateDeviceRGB(), kCGImageAlphaPremultipliedLast); CGContextSetStrokeColorWithColor(context, lineColor.CGColor); CGContextSetRGBFillColor(context, 0.0, 0.0, 1.0, 1.0); CGContextSetLineWidth(context, lineW); for(int i = 0; i < routesArr.count; i++) { CLLocation* location = [routesArr objectAtIndex:i]; CGPoint point = [_mapView convertCoordinate:location.coordinate toPointToView:routeImg]; if(i == 0) { CGContextMoveToPoint(context, point.x, routeImg.frame.size.height - point.y); } else { CGContextAddLineToPoint(context, point.x, routeImg.frame.size.height - point.y); } } CGContextStrokePath(context); CGImageRef image = CGBitmapContextCreateImage(context); UIImage* img = [UIImage imageWithCGImage:image]; routeImg.image = img; CGContextRelease(context); } #pragma mark mapView delegate functions - (void)mapView:(MKMapView *)mapView regionWillChangeAnimated:(BOOL)animated {
if (!IOS7)
_routeView.hidden = YES; } - (void)mapView:(MKMapView *)mapView regionDidChangeAnimated:(BOOL)animated {
if (!IOS7){
[self updateRouteView:_routes RouteView:_routeView]; _routeView.hidden = NO; [_routeView setNeedsDisplay];
} }
