Question

我有两点的纬度和经度，并希望在MapKit上使用Pin在这两点之间画线。

我用谷歌搜索但找不到合适的解决方案，因为我找到的是用数据点数组绘制叠加层，但我在这两点之间没有任何点数。

只需两点，并希望在这两点之间画线。

请帮忙。

Answer 1

首先让您的视图控制器实现MKMapViewDelegate协议并声明您需要的属性：

@property (nonatomic, retain) MKMapView *mapView; //this is your map view
@property (nonatomic, retain) MKPolyline *routeLine; //your line
@property (nonatomic, retain) MKPolylineView *routeLineView; //overlay view

然后在viewDidLoad（例如，或初始化的任何地方）

//initialize your map view and add it to your view hierarchy - **set its delegate to self***
CLLocationCoordinate2D coordinateArray[2];
coordinateArray[0] = CLLocationCoordinate2DMake(lat1, lon1); 
coordinateArray[1] = CLLocationCoordinate2DMake(lat2, lon2);


self.routeLine = [MKPolyline polylineWithCoordinates:coordinateArray count:2];
[self.mapView setVisibleMapRect:[self.routeLine boundingMapRect]]; //If you want the route to be visible

[self.mapView addOverlay:self.routeLine];

然后实施MKMapViewDelegate的方法-(MKOverlayView *)mapView:viewForOverlay:

-(MKOverlayView *)mapView:(MKMapView *)mapView viewForOverlay:(id<MKOverlay>)overlay
{
    if(overlay == self.routeLine)
    {
        if(nil == self.routeLineView)
        {
            self.routeLineView = [[[MKPolylineView alloc] initWithPolyline:self.routeLine] autorelease];
            self.routeLineView.fillColor = [UIColor redColor];
            self.routeLineView.strokeColor = [UIColor redColor];
            self.routeLineView.lineWidth = 5;

        }

        return self.routeLineView;
    }

    return nil;
}

您可以调整代码以满足您的需要，但它可以直接提升2个或更多。

Answer 2

请参阅本教程以在mkmapview中绘制折线或路线

1＆GT; Draw route using mapkit

2＆gt;从ios4.0以上版本开始您可以使用MKOverlayPathView See Apple Docs

示例代码： -

创建PolyLine： -

    -(void) loadRoute
    {
    NSString* filePath = [[NSBundle mainBundle] pathForResource:@”route” ofType:@”csv”];
    NSString* fileContents = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:nil];
    NSArray* pointStrings = [fileContents componentsSeparatedByCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];

    MKMapPoint northEastPoint;
    MKMapPoint southWestPoint; 

   MKMapPoint* pointArr = malloc(sizeof(CLLocationCoordinate2D) * pointStrings.count);

    for(int idx = 0; idx < pointStrings.count; idx++)
    {
    NSString* currentPointString = [pointStrings objectAtIndex:idx];
    NSArray* latLonArr = [currentPointString componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@","]];

    CLLocationDegrees latitude = [[latLonArr objectAtIndex:0] doubleValue];
    CLLocationDegrees longitude = [[latLonArr objectAtIndex:1] doubleValue];

    CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake(latitude, longitude);

    MKMapPoint point = MKMapPointForCoordinate(coordinate);

        if (idx == 0) {
    northEastPoint = point;
    southWestPoint = point;
    }
    else
    {
    if (point.x > northEastPoint.x)
    northEastPoint.x = point.x;
    if(point.y > northEastPoint.y)
    northEastPoint.y = point.y;
    if (point.x < southWestPoint.x)
    southWestPoint.x = point.x;
    if (point.y < southWestPoint.y)
    southWestPoint.y = point.y;
    }

    pointArr[idx] = point;

    }

        self.routeLine = [MKPolyline polylineWithPoints:pointArr count:pointStrings.count];

    _routeRect = MKMapRectMake(southWestPoint.x, southWestPoint.y, northEastPoint.x - southWestPoint.x, northEastPoint.y - southWestPoint.y);

        free(pointArr);

    }

显示PoluLine： -

[self.mapView addOverlay:self.routeLine];

单独添加叠加层不会在地图上渲染任何内容。你的MKMapViewDelegate实现必须为你刚添加的这条路线返回一个叠加，因为简单的添加无济于事。

- (MKOverlayView *)mapView:(MKMapView *)mapView viewForOverlay:(id )overlay
{
MKOverlayView* overlayView = nil;

if(overlay == self.routeLine)
{
//if we have not yet created an overlay view for this overlay, create it now.
if(nil == self.routeLineView)
{
self.routeLineView = [[[MKPolylineView alloc] initWithPolyline:self.routeLine] autorelease];
self.routeLineView.fillColor = [UIColor redColor];
self.routeLineView.strokeColor = [UIColor redColor];
self.routeLineView.lineWidth = 3;
}

overlayView = self.routeLineView;

}

return overlayView;

}

Answer 3

enter image description here

#import <MapKit/MapKit.h>   

- (void)viewDidLoad
{
        [mapview setDelegate:self];
        mapview.showsUserLocation = YES; 
}

- (CLLocationCoordinate2D)coordinateWithLocation:(NSDictionary*)location
{
    double latitude = [[location objectForKey:@"lat"] doubleValue];
    double longitude = [[location objectForKey:@"lng"] doubleValue];

    return CLLocationCoordinate2DMake(latitude, longitude);
}

- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation   *)userLocation
{

    MKCoordinateSpan span = MKCoordinateSpanMake(0.005, 0.005);
    MKCoordinateRegion region = MKCoordinateRegionMake(userLocation.location.coordinate, span);

    [mapview setRegion:region];

    [mapview setCenterCoordinate:userLocation.coordinate animated:YES];
    NSString *baseUrl = [NSString stringWithFormat:@"http://maps.googleapis.com/maps/api/directions/json?origin=%f,%f&destination=%@&sensor=true", mapview.userLocation.location.coordinate.latitude,  mapview.userLocation.location.coordinate.longitude, @"24.1620661,72.394131"];


    //http://maps.googleapis.com/maps/api/directions/json?origin=23.030000,72.580000&destination=23.400000,72.750000&sensor=true

    NSURL *url = [NSURL URLWithString:[baseUrl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];

    NSLog(@"%@",url);
    NSURLRequest *request = [NSURLRequest requestWithURL:url];

    [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {

    NSError *error = nil;
    NSDictionary *result = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error];

    NSArray *routes = [result objectForKey:@"routes"];
        NSLog(@"%@",routes);

    NSDictionary *firstRoute = [routes objectAtIndex:0];

    NSDictionary *leg =  [[firstRoute objectForKey:@"legs"] objectAtIndex:0];

    NSDictionary *end_location = [leg objectForKey:@"end_location"];

       NSLog(@"dDDDDDD>>>>>>%@",leg);
    double latitude = [[end_location objectForKey:@"lat"] doubleValue];
    double longitude = [[end_location objectForKey:@"lng"] doubleValue];

    CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake(latitude, longitude);

    MKPointAnnotation *point = [[MKPointAnnotation alloc] init];
    point.coordinate = coordinate;
    point.title =  [leg objectForKey:@"end_address"];
    point.subtitle = @"I'm here!!!";

    [self.mapview addAnnotation:point];

    NSArray *steps = [leg objectForKey:@"steps"];

    int stepIndex = 0;

    CLLocationCoordinate2D stepCoordinates[1  + [steps count] + 1];

    stepCoordinates[stepIndex] = userLocation.coordinate;

    for (NSDictionary *step in steps) {

        NSDictionary *start_location = [step objectForKey:@"start_location"];
        stepCoordinates[++stepIndex] = [self coordinateWithLocation:start_location];

        if ([steps count] == stepIndex){
            NSDictionary *end_location = [step objectForKey:@"end_location"];
            stepCoordinates[++stepIndex] = [self coordinateWithLocation:end_location];
        }
    }

    MKPolyline *polyLine = [MKPolyline polylineWithCoordinates:stepCoordinates count:1 + stepIndex];
    [mapview addOverlay:polyLine];

    CLLocationCoordinate2D centerCoordinate = CLLocationCoordinate2DMake((userLocation.location.coordinate.latitude + coordinate.latitude)/2, (userLocation.location.coordinate.longitude + coordinate.longitude)/2);

}];
}

然后实现MKMapViewDelegate的方法 - （MKOverlayView *）mapView：viewForOverlay：

- (MKOverlayView *)mapView:(MKMapView *)mapView viewForOverlay:(id <MKOverlay>)overlay
{
    MKPolylineView *polylineView = [[MKPolylineView alloc] initWithPolyline:overlay];
    polylineView.strokeColor = [UIColor colorWithRed:204/255. green:45/255. blue:70/255. alpha:1.0];
    polylineView.lineWidth = 1;

    return polylineView;
}


- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
    static NSString *annotaionIdentifier=@"annotationIdentifier";
    MKPinAnnotationView *aView=(MKPinAnnotationView*)[mapView dequeueReusableAnnotationViewWithIdentifier:annotaionIdentifier ];
    if (aView==nil) {

        aView=[[MKPinAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:annotaionIdentifier];
        aView.pinColor = MKPinAnnotationColorRed;
        aView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
        //        aView.image=[UIImage imageNamed:@"arrow"];
        aView.animatesDrop=TRUE;
        aView.canShowCallout = YES;
        aView.calloutOffset = CGPointMake(-5, 5);
    }

    return aView;
}

Answer 4

First of all Add frame work
    1 Foundation.framework
    2 CoreGraphics.framework
    3 CoreLocation.framework
    4 MapKit.framework

然后创建nsobject文件，请参阅.... TrailsMap.h文件

#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
@interface TrailsMap : NSObject<MKAnnotation>
{
    CLLocationCoordinate2D coordinate;

    NSString *title;
    NSString *image;
    NSString *subtitle;
}

@property (nonatomic, readonly) CLLocationCoordinate2D coordinate;
@property (nonatomic,copy) NSString *title;
@property (nonatomic,copy) NSString *image;
@property (nonatomic,copy) NSString *subtitle;

- (id)initWithLocation:(CLLocationCoordinate2D)coord;

TrailsMap.m

#import "TrailsMap.h"

@implementation TrailsMap
@synthesize coordinate,title,image,subtitle;

- (id)initWithLocation:(CLLocationCoordinate2D)coord{

    self = [super init];
    if (self) {
        coordinate = coord;

    }
    return self;
}

现在在mainview中创建编码请参阅..

ViewController.h

#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>


@interface ViewController : UIViewController<MKMapViewDelegate>

@property (strong, nonatomic) IBOutlet MKMapView *MapView;
@property (nonatomic, retain) MKPolyline *routeLine;
@property (nonatomic, retain) MKPolylineView *routeLineView;

-(void)LoadMapRoute;
@end

最后在mainview.m文件中创建编码

ViewController.m

#import "ViewController.h"
#import "TrailsMap.h"

@interface ViewController ()
{
    NSData *alldata;
    NSMutableDictionary *data1;

   NSMutableArray *RouteLocation;
   NSMutableArray *RouteName;
}
@end

@implementation ViewController
@synthesize MapView,routeLine,routeLineView;


- (void)viewDidLoad
{
   [super viewDidLoad];

   RouteName = [[NSMutableArray alloc] initWithObjects:@"Ahmedabad",@"Rajkot", nil];
   RouteLocation = [[NSMutableArray alloc] initWithObjects:@"23.0300,72.5800",@"22.3000,70.7833", nil];
   [self LoadMapRoute];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
}


//-------------------------------------
// ************* Map ******************
//-------------------------------------

-(void)LoadMapRoute
{
    MKCoordinateSpan span = MKCoordinateSpanMake(0.8, 0.8);
    MKCoordinateRegion region;
    region.span = span;
    region.center= CLLocationCoordinate2DMake(23.0300,72.5800);


    // Distance between two address
   NSArray *coor1=[[RouteLocation objectAtIndex:0] componentsSeparatedByString:@","];
   CLLocation *locA = [[CLLocation alloc] initWithLatitude:[[coor1 objectAtIndex:0] doubleValue] longitude:[[coor1 objectAtIndex:1] doubleValue]];

   NSArray *coor2=[[RouteLocation objectAtIndex:1] componentsSeparatedByString:@","];
   CLLocation *locB = [[CLLocation alloc] initWithLatitude:[[coor2 objectAtIndex:0] doubleValue] longitude:[[coor2 objectAtIndex:1] doubleValue]];
    CLLocationDistance distance = [locA distanceFromLocation:locB];
    NSLog(@"Distance :%.0f Meters",distance);


   NSString *baseUrl = [NSString stringWithFormat:@"http://maps.googleapis.com/maps/api/directions/json?origin=%@&destination=%@&sensor=true", [RouteLocation objectAtIndex:0],[RouteLocation objectAtIndex:1] ];

   NSURL *url = [NSURL URLWithString:[baseUrl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
   alldata = [[NSData alloc] initWithContentsOfURL:url];

    NSError *err;
    data1 =[NSJSONSerialization JSONObjectWithData:alldata options:NSJSONReadingMutableContainers|NSJSONReadingMutableLeaves error:&err];

    if (err)
    {
        NSLog(@" %@",[err localizedDescription]);
    }

    NSArray *routes = [data1 objectForKey:@"routes"];
    NSDictionary *firstRoute = [routes objectAtIndex:0];
    NSDictionary *leg =  [[firstRoute objectForKey:@"legs"] objectAtIndex:0];
    NSArray *steps = [leg objectForKey:@"steps"];

    int stepIndex = 0;
    CLLocationCoordinate2D stepCoordinates[[steps count]+1 ];

    for (NSDictionary *step in steps)
    {

        NSDictionary *start_location = [step objectForKey:@"start_location"];
        double latitude = [[start_location objectForKey:@"lat"] doubleValue];
        double longitude = [[start_location objectForKey:@"lng"] doubleValue];
        stepCoordinates[stepIndex] = CLLocationCoordinate2DMake(latitude, longitude);

        if (stepIndex==0)
        {
            TrailsMap *point=[[TrailsMap alloc] initWithLocation:stepCoordinates[stepIndex]];
            point.title =[RouteName objectAtIndex:0];
            point.subtitle=[NSString stringWithFormat:@"Distance :%.0f Meters",distance];
            [self.MapView addAnnotation:point];
        }
        if (stepIndex==[steps count]-1)
        {
            stepIndex++;
            NSDictionary *end_location = [step objectForKey:@"end_location"];
            double latitude = [[end_location objectForKey:@"lat"] doubleValue];
            double longitude = [[end_location objectForKey:@"lng"] doubleValue];
            stepCoordinates[stepIndex] = CLLocationCoordinate2DMake(latitude, longitude);

            TrailsMap *point=[[TrailsMap alloc] initWithLocation:stepCoordinates[stepIndex]];
            point.title = [RouteName objectAtIndex:1];
            point.subtitle=[NSString stringWithFormat:@"Distance :%.0f Meters",distance];

            [self.MapView addAnnotation:point];
        }
        stepIndex++;
    }

    MKPolyline *polyLine = [MKPolyline polylineWithCoordinates:stepCoordinates count: stepIndex];
    [MapView addOverlay:polyLine];
    [MapView setRegion:region animated:YES];
}

- (MKOverlayView *)mapView:(MKMapView *)mapView viewForOverlay:(id <MKOverlay>)overlay
{
    MKPolylineView *polylineView = [[MKPolylineView alloc] initWithPolyline:overlay];
    polylineView.strokeColor = [UIColor colorWithRed:204/255. green:45/255. blue:70/255. alpha:1.0];
    polylineView.lineWidth = 5;

    return polylineView;
}

如果您想在地图中设置多个引脚，则只需添加此代码即可。 Annotaion是Objectfile。

-(void)LoadMultiplePin
{
    RouteName = [[NSMutableArray alloc] initWithObjects:@"Ahmedabad",@"Rajkot",@"Limdi", nil];
    RouteLocation = [[NSMutableArray alloc] initWithObjects:@"23.0300,72.5800",@"22.3000,70.7833",@"22.5728,71.8114", nil];

    MKCoordinateSpan span = MKCoordinateSpanMake(2.9, 2.9);
    MKCoordinateRegion region;

    region.span = span;
    region.center= CLLocationCoordinate2DMake(22.5728,71.8114);

    int cnt=RouteLocation.count;

    for (int p=0 ; p<cnt ; p++ )
    {
        NSArray *coor=[[RouteLocation objectAtIndex:p] componentsSeparatedByString:@","];

        CLLocationCoordinate2D location=CLLocationCoordinate2DMake([[coor objectAtIndex:0] doubleValue],[[coor objectAtIndex:1] doubleValue]);

        Annotaion *point=[[Annotaion alloc] initWithLocation:location];
        point.title =[RouteName objectAtIndex:p];
        [Map addAnnotation:point];
    }
    [Map setRegion:region animated:YES];

}

使用此代码您可以轻松地在两个引脚之间切断两个引脚和绘制线享受快乐编码... :)

Answer 5

我从@graver那里得到了很好的答案，并为Swift 3做了这个：

gradle app:dependencies

Answer 6

通过您的地址协调

-(NSArray*) calculateRoutesFrom:(CLLocationCoordinate2D) f to: (CLLocationCoordinate2D) t {
    NSString* saddr = [NSString stringWithFormat:@"%f,%f", f.latitude, f.longitude];
    NSString* daddr = [NSString stringWithFormat:@"%f,%f", t.latitude, t.longitude];

NSString* apiUrlStr = [NSString stringWithFormat:@"http://maps.google.com/maps?             output=dragdir&saddr=%@&daddr=%@", saddr, daddr];
//    NSString* apiUrlStr = @"http://maps.google.com/maps?output=dragdir&saddr=40.769264,-73.958995&daddr=47.286522,-122.312932";
NSURL* apiUrl = [NSURL URLWithString:apiUrlStr];
NSLog(@"api url: %@", apiUrl);
NSString *apiResponse = [NSString stringWithContentsOfURL:apiUrl encoding:NSUTF8StringEncoding error:nil];
NSString* encodedPoints = [apiResponse stringByMatching:@"points:\\\"([^\\\"]*)\\\"" capture:1L];
return [self decodePolyLine:[encodedPoints mutableCopy]];
}


-(NSMutableArray *)decodePolyLine: (NSMutableString *)encoded {
    [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];
        printf("[%f,", [latitude doubleValue]);
        printf("%f]", [longitude doubleValue]);
        CLLocation *loc = [[CLLocation alloc] initWithLatitude:[latitude floatValue] longitude:[longitude floatValue]];
        [array addObject:loc];
    }

    return array;
}

-(void) updateRouteView:(UIColor *)clr {
    CGContextRef context =CGBitmapContextCreate(nil,routeView.frame.size.width,routeView.frame.size.height,8,4 * routeView.frame.size.width,CGColorSpaceCreateDeviceRGB(), kCGImageAlphaPremultipliedLast);

    CGContextSetStrokeColorWithColor(context, clr.CGColor);
    CGContextSetRGBFillColor(context, 0.0, 0.0, 1.0, 1.0);
    CGContextSetLineWidth(context, 3.0);

    for(int i = 0; i < routes.count; i++) {
        CLLocation* location = [routes objectAtIndex:i];
        CGPoint point = [mapView convertCoordinate:location.coordinate toPointToView:routeView];

        if(i == 0) {
            CGContextMoveToPoint(context, point.x, routeView.frame.size.height - point.y);
        } else {
            CGContextAddLineToPoint(context, point.x, routeView.frame.size.height - point.y);

        }
    }

    CGContextStrokePath(context);

    CGImageRef image = CGBitmapContextCreateImage(context);
    UIImage* img = [UIImage imageWithCGImage:image];

    routeView.image = img;
    CGContextRelease(context);

}

Answer 7

我迅速创建了演示，并使用折线继续在地图上更新位置。

请按照以下步骤操作：

1）创建一个新项目并设置所需的东西。 2）转到项目目标->构建阶段->将二进制文件与库链接并添加 MapKit.framwork ， CoreLocation.framework 。 3）转到sotryboard并添加mapview和与viewcontroller的链接。 4）添加我在下面提供代码的属性和委托。

ViewController.Swift

导入UIKit

导入MapKit

导入CoreLocation

ViewController类：UIViewController，CLLocationManagerDelegate，MKMapViewDelegate {

@IBOutlet weak var mapView:MKMapView!
var locationManager: CLLocationManager!
var routeArr:[CLLocationCoordinate2D] = []
var isStarted:Bool = false

// MARK:- Life cycle
override func viewDidLoad() {
    super.viewDidLoad()

    locationManager = CLLocationManager()
    locationManager.desiredAccuracy = kCLLocationAccuracyBest;
    locationManager.delegate = self;
    locationManager.startMonitoringSignificantLocationChanges()
    locationManager.allowsBackgroundLocationUpdates = true
    locationManager.pausesLocationUpdatesAutomatically = false

    // user activated automatic authorization info mode
    let status = CLLocationManager.authorizationStatus()
    if status == .notDetermined || status == .denied || status == .authorizedWhenInUse {
           // present an alert indicating location authorization required
           // and offer to take the user to Settings for the app via
           // UIApplication -openUrl: and UIApplicationOpenSettingsURLString
           locationManager.requestAlwaysAuthorization()
           locationManager.requestWhenInUseAuthorization()
       }

    locationManager.startUpdatingLocation()
    locationManager.startUpdatingHeading()

    mapView.delegate = self
    mapView.showsUserLocation = true
    mapView.mapType = MKMapType(rawValue: 0)!
    mapView.userTrackingMode = MKUserTrackingMode(rawValue: 2)!
}

// MARK:- Button Actions

@IBAction func startBtnClick(_ sender: Any) {
    isStarted = true
}

@IBAction func endBtnClick(_ sender: Any) {
    isStarted = false
    routeArr.removeAll()
}

// MARK:- LocationManager Delegate

func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
    let location = locations.last

    if isStarted == true {
        if locations.count > 0 {
            let newLocation:CLLocationCoordinate2D = (location?.coordinate ?? nil)!
            routeArr.append(newLocation)
            DispatchQueue.main.async {
                if self.routeArr.count > 2 {
                    let route:[CLLocationCoordinate2D] = [self.routeArr[self.routeArr.count - 2] ,self.routeArr.last!]
                    print(route)
                    let polyline = MKPolyline(coordinates: route, count: route.count)
                    self.mapView.addOverlay(polyline)
                }
            }
        }
    }
}

func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay) -> MKOverlayRenderer {
    if (overlay is MKPolyline) {
        let pr = MKPolylineRenderer(overlay: overlay)
        pr.strokeColor = UIColor.red
        pr.fillColor = .green
        pr.lineWidth = 5
        return pr
    }else {
      return MKOverlayRenderer()
    }
}

}

运行项目，然后单击开始按钮进行跟踪，您可以在地图上看到折线。如果单击停止按钮，它将停止绘制折线。

谢谢

Answer 8

您可以使用MKPolyline在地图中绘制线条。

请参阅此链接

http://spitzkoff.com/craig/?p=136

ALSO：

https://github.com/kishikawakatsumi/MapKit-Route-Directions

http://cloudmade.com/

这些都是您可以轻松参考的教程和开源库。目前MapKit 不支持支持此功能......

Answer 9

这里你必须用纬度和经度计算路线，然后在MapView上绘制多边形线........ 我在我的应用程序中执行此操作....我在mapview上绘制了所有信息的路径....

如果您使用MapKit并使用RagexKitLite，那么它太简单了，只需获得RagexKitLite演示....

Answer 10

获取完整代码：https://github.com/javedmultani16/MapKitWithPolyLine

画线像：

   directionsRequest.transportType = MKDirectionsTransportType.automobile

        //Draw polyline by using MKRoute so it follows the street roads...
        for (k, item) in arrayarrayPlacemarks.enumerated() {
            if k < (arrayarrayPlacemarks.count - 1) {
                directionsRequest.source = item
                directionsRequest.destination = arrayarrayPlacemarks[k+1]

                let directions = MKDirections(request: directionsRequest)
          directions.calculate { (response:MKDirections.Response!, error: Error!) -> Void in
                    if error == nil {
                        self.locRoute = response.routes[0] as? MKRoute
                        let geodesic:MKPolyline = self.locRoute!.polyline
                        self.mapView.addOverlay(geodesic)
                    }
                }
            }
        }

代理方法：

  func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay) -> MKOverlayRenderer {
        if overlay.isKind(of: MKPolyline.self){
                var polylineRenderer = MKPolylineRenderer(overlay: overlay)
                polylineRenderer.fillColor = UIColor.blue
                polylineRenderer.strokeColor = UIColor.blue
                polylineRenderer.lineWidth = 2

            return polylineRenderer
     }
        return MKOverlayRenderer(overlay: overlay)
    }

iPhone：如何在MapKit上的两点之间画线？

10 个答案: