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标题: ios - 显示位置并在 ios 中找到最近的位置 [打印本页]

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作者: 菜鸟教程小白    时间: 2022-12-13 10:41
标题: ios - 显示位置并在 ios 中找到最近的位置

我想显示我的点 NSArray *chSpot = [parser parseArray:responseObject]; 接收 3 个对象，我想显示每个位置的经纬度

并根据我的位置找到最近的地点...我正在使用此代码:

         NSArray *chSpot = [parser parseArray:responseObject];

//GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:[locLat doubleValue] //经度:[locLong doubleValue] //缩放:4];

     mapView_ = [GMSMapView mapWithFrame:CGRectZero camera:nil];
     mapView_.myLocationEnabled = YES;
     mapView_.settings.myLocationButton = YES;


     for (int i=0; i<chSpot.count; i++)
     {

         ChargingSpots *spot = [chSpot objectAtIndex:i];
         NSString *locLat = spot.LocationLat;
         NSString *locLong = spot.LocationLong;


         // Creates a marker in the center of the map.
         GMSMarker *marker = [[GMSMarker alloc] init];
         marker.position = CLLocationCoordinate2DMake([locLat doubleValue], [locLong doubleValue]);
         marker.title = @"Amman";
         marker.snippet = @"Jordan";

         mapView_.delegate=self;
         marker.appearAnimation = kGMSMarkerAnimationPop;
         marker.icon = [UIImage imageNamed"car"];
         marker.map = mapView_;

     }

     //[mapView_ setSelectedMarker:marker];

     self.view = mapView_;

//
//
//CLLocation *locationA = [[CLLocation alloc] initWithLatitude:[locLat doubleValue] longitude:[locLong doubleValue]]; //
//CLLocation *locationB = [[CLLocation alloc] initWithLatitude:[locLat doubleValue] longitude:[locLong doubleValue]]; //
//CLLocationDistance distance = [ locationA distanceFromLocation:locationB]; //
//NSLog (@"%f",distance);

     self.locationManager = [[CLLocationManager alloc] init];
     self.locationManager.distanceFilter = kCLDistanceFilterNone;
     self.locationManager.desiredAccuracy = kCLLocationAccuracyHundredMeters;

     [self.locationManager startUpdatingLocation];

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Best Answer-推荐答案

在 locationManager 的委托(delegate)方法 locationManager:didUpdateLocations: 中，您可以获得当前位置，它提供了计算 distanceFromLocationconst CLLocation *)location 的方法

CLLocationDistance distA = [currentLocation distanceFromLocation: locationA]; CLLocationDistance distB = [currentLocation distanceFromLocation: locationB];//等等

关于ios - 显示位置并在 ios 中找到最近的位置，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/32477399/

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