IOS 无法添加多边形标记 仅绘制折线 未添加标记

Question

我目前正在开发可以显示标记和折线的模块，以显示机器人可以从位置 A 到位置 B 的路线。当通过长按添加标记和线时，它只显示 GMSPolylines 被绘制和添加。但是，没有添加任何标记。请告诉我是否可以分别在两者之间绘制标记和多边形？

下面是我的代码

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    array = [[NSMutableArray alloc] init];
    // Create a GMSCameraPosition that tells the map to display the
    // coordinate -33.86,151.20 at zoom level 6.
    GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:22.2855200
                                                            longitude:114.1576900
                                                                 zoom:12];
    mapView_ = [GMSMapView mapWithFrame:CGRectZero camera:camera];
    mapView_.delegate = self;

    mapView_.myLocationEnabled = YES;
    mapView_.settings.compassButton = YES;
    mapView_.settings.myLocationButton = YES;
    // mapView_.delegate = self;
    self.view = mapView_;

    // Creates a marker in the center of the map.
    GMSMarker *marker = [[GMSMarker alloc] init];
    marker.position = CLLocationCoordinate2DMake(22.2855200, 114.1576900);
    marker.title = @"My place";
    marker.snippet = @"HK";
    marker.map = mapView_;


}


- (void)addMarkers
{
  //  [mapView_ clear];
    if([array count] > 0){
        GMSMutablePath *path = [GMSMutablePath path];
        for (int i = 0; i < [array count]; i++) {
            CLLocationCoordinate2D position = CLLocationCoordinate2DMake(11.11 , 123.123);
            GMSMarker *marker = [GMSMarker markerWithPosition:position];
            marker.position = position;
            marker.title = @"Desitnation";
            NSString *tmpLat = [[NSString alloc] initWithFormat:@"%f", position.latitude];
            NSString *tmpLong = [[NSString alloc] initWithFormat:@"%f", position.longitude];
            marker.snippet = [NSString stringWithFormat:@"%@ %@", tmpLat,tmpLong];

            UIColor *color;
            CheckPoints *cp = [array objectAtIndex:i];
            [path addLatitude:cp.getLatitude longitude:cp.getLongitude];
            GMSPolyline *polyline = [GMSPolyline polylineWithPath:path];
            polyline.geodesic = YES;
            polyline.strokeWidth = 10.f;
            if (cp.getState ==1) {
                // Green
                color = [UIColor colorWithHue:.2 saturation:1.f brightness:1.f alpha:1.0f];
                polyline.strokeColor = [UIColor greenColor];
            } else {
                color = [UIColor colorWithHue:1. saturation:1.f brightness:1.f alpha:1.0f];
                polyline.strokeColor = [UIColor redColor];
            }
            marker.icon = [GMSMarker markerImageWithColor:color];
            marker.map = mapView_;
            polyline.map = mapView_;
        }

    }
}


- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

-(void) mapView:(GMSMapView *)mapView didLongPressAtCoordinate:(CLLocationCoordinate2D)coordinate{
//    GMSMarker *marker3 = [[GMSMarker alloc] init];
//    marker3.position = coordinate;
//    marker3.title = @"Desitnation";
//    NSString *tmpLat = [[NSString alloc] initWithFormat:@"%f", coordinate.latitude];
//    NSString *tmpLong = [[NSString alloc] initWithFormat:@"%f", coordinate.longitude];
//    marker3.snippet = [NSString stringWithFormat:@"%@ %@", tmpLat,tmpLong];
//    
//    marker3.map = mapView_;


    CheckPoints *myCar=[[CheckPoints alloc] init];
    [myCar setState:0];
    [myCar setLatitude:coordinate.latitude];
    [myCar setLongitude:coordinate.longitude];
    NSString* theTextValue = @"Desitnation";
    [myCar setDesp:theTextValue];

    NSLog( @"%d", myCar.getState );
    NSLog( @"%f", myCar.getLatitude);
    NSLog( @"%f", myCar.getLongitude );
    NSLog( @"%@", myCar.getDesp );

    [array addObject:myCar];
    CheckPoints *lastChk = array.lastObject;
    for (int i = 0; i < [array count]; i++) {
        CheckPoints *current =  [array objectAtIndex:i];
        if(current.getLatitude != lastChk.getLatitude && current.getLongitude != lastChk.getLongitude){
            [current setState:1];
            NSString* previousTitle = [NSString stringWithFormat:@"%@%@", @"Checkpoint" ,[NSString stringWithFormat:@"%i", i]];
            [current setDesp:previousTitle];
        }
    }
    [self addMarkers];
    [ToastView showToastInParentView:self.view withText:@"What a toast!" withDuaration:5.0];


}

@end

Answer 1

看起来你在重复添加相同的标记......

for (int i = 0; i < [array count]; i++) {
        CLLocationCoordinate2D position = CLLocationCoordinate2DMake(11.11 , 123.123);
        GMSMarker *marker = [GMSMarker markerWithPosition:position];

...硬编码点。