Ios 在GoogleMapSDK上放置标记

我成功地在两点之间绘制了多段线。但我想把源点放在地图的左侧，目标点放在地图的右侧，并在它们之间水平画一条线

任何想法都值得赞赏

- (void)addMarkerOnMap {

NSArray* arrMarkerData = @[
                           @{@"icon":[UIImage imageNamed:@"blue"], @"position":[[CLLocation alloc]initWithLatitude:self.pickupAddCoordinate.latitude longitude:self.pickupAddCoordinate.longitude]},
                           @{@"icon":[UIImage imageNamed:@"yellow"], @"position":[[CLLocation alloc]initWithLatitude:self.destinationAddCordinate.latitude longitude:self.destinationAddCordinate.longitude]}
                           ];

GMSCoordinateBounds *bounds = [[GMSCoordinateBounds alloc] init];

//*> Including current location coordinate
bounds = [bounds includingCoordinate:[LocationManager sharedManager].currentCoordinate];

for (NSDictionary *dict in arrMarkerData)
{        
    //*> Add a marker in the center of the map.

    GMSMarker *marker = [[GMSMarker alloc] init];
    marker.icon       = (UIImage *)dict[@"icon"];
    marker.position   = [(CLLocation *)dict[@"position"] coordinate];
    bounds            = [bounds includingCoordinate:marker.position];
    marker.map        = self.mapView;

}

//*> Fit Marker in bound    
if (self.isZoomMapView)
{
    [self.mapView animateWithCameraUpdate:[GMSCameraUpdate fitBounds:bounds withPadding:25.0f]];
    self.isZoomMapView = NO;
}

[self.mapView animateToBearing:-75];
[self getPathGoogleAPI_CallWithSource:self.pickupAddCoordinate andDestination:self.destinationAddCordinate];}

此方法适用于多段线

- (void)getPathGoogleAPI_CallWithSource : (CLLocationCoordinate2D)sourceCoordinate andDestination: (CLLocationCoordinate2D)destinationCoordinate
{

    NSString *getDriverLocationURl;    
    NSDictionary *postParams = @{k_API_GoogleOrigin      : [NSString stringWithFormat:@"%f,%f", sourceCoordinate.latitude, sourceCoordinate.longitude],
                                 k_API_GoogleDestination : [NSString stringWithFormat:@"%f,%f",                                                          destinationCoordinate.latitude, destinationCoordinate.longitude],
                                };

    getDriverLocationURl = [NSString stringWithFormat:@"%@", GOOGLE_DIRECTION_URL];

    [serviceManager apiCallUsingDataTaskHTTPMethod:GET url:getDriverLocationURl andParameters:postParams forTask:kTaskDrawRoute currentView:self.view accessToken:NO completionHandler:^(id response, NSError *error, TaskType task, BOOL success)
    {
        if (!error && response)
        {
            if ([[response valueForKey:RESPONSE_STATUS] isEqualToString:RESPONSE_OK])
            {
                NSArray *routArr            = [response valueForKey:k_API_GoogleRoutes];

                GMSPath *path = [GMSPath pathFromEncodedPath:routArr[0][@"overview_polyline"][@"points"]];
                polyline = [GMSPolyline polylineWithPath:path];
                polyline.strokeColor = [UIColor blueColor];
                polyline.strokeWidth = 4.f;
                polyline.map = self.mapView;
            }
            else
            {
                DLog(@"Google Direction : %@", [response valueForKey:RESPONSE_ERROR_MESSAGE]);
            }
        }
        else
        {
            DLog(@"Google Direction : Sorry something went wrong");
        }
    }];
}

---

要使标记图标居中对齐，请使用地锚

_marker1 = [[GMSMarker alloc] init];
_marker1.position = CLLocationCoordinate2DMake(12.9716, 77.5946);
_marker1.title = @"sydney";
_marker1.groundAnchor = CGPointMake(0.2, 0.9);
_marker1.appearAnimation = kGMSMarkerAnimationPop;
_marker1.appearAnimation = kGMSMarkerAnimationPop;
_marker1.icon = [UIImage imageNamed:@"Flag Filled -50.png"];

---

改变地面锚定点使其居中

水平多线完全取决于纬度值。如果两个位置纬度值相同，则多边形线是水平的。

---

您可以使用两个图像图标来标记（一个用于源，另一个用于目标）。我只想显示从左到右的多段线。然后你能简单地解释一下问题是什么。源标记总是在地图的左侧，目的地总是在右侧。希望这是有意义的。添加地锚：CLLocationCoordinate2D位置=CLLocationCoordinate2DMake（51.5，-0.127）；CLLocationDegrees=90；GMSMarker*london=[GMSMarker marker with position:position]；london.groundAnchor=CGPointMake（0.5,0.5）；伦敦。旋转=度；london.map=mapView；不，它不起作用。我想用这种方式放置一个标记，因此，多段线始终绘制水平标记放置不起作用或水平绘制多段线不起作用。您能否解释多段线绘制水平多段线取决于您指定给GMSmutablepath的点。如果您指定两个横向多段线，则多段线是水平的。请在问题中添加有助于回答的代码段你的问题准确无误。

 _path = [GMSMutablePath path];
[_path addLatitude:12.9716 longitude:77.5946]; // bangalore
[_path addLatitude:12.9716 longitude:78.0]; // tumkur


_marker1 = [[GMSMarker alloc] init];
_marker1.position = CLLocationCoordinate2DMake(12.9716, 77.5946);
_marker1.title = @"Bangalore";
_marker1.groundAnchor = CGPointMake(0.2, 0.9);
_marker1.appearAnimation = kGMSMarkerAnimationPop;
_marker1.appearAnimation = kGMSMarkerAnimationPop;
_marker1.icon = [UIImage imageNamed:@"Flag Filled -50.png"];
_marker1.snippet = @"India";
_marker1.map = _mapView;

_marker2 = [[GMSMarker alloc] init];
_marker2.position = CLLocationCoordinate2DMake(12.9716, 78.0);
_marker2.title = @"Tumkur";
_marker2.groundAnchor = CGPointMake(0.3, 0.9);
_marker2.snippet = @"India";
_marker2.icon = [UIImage imageNamed:@"Flag Filled -50.png"];
_marker2.map = _mapView;
_polyline = [GMSPolyline polylineWithPath:_path];
_polyline.strokeColor = [UIColor blueColor];
_polyline.strokeWidth = 1.f;
_polyline.path = _path;
_polyline.map = _mapView;