Add live data
A newer version of the Maps SDK is available
This page uses v6.4.1 of the Mapbox Maps SDK. A newer version of the SDK is available. Learn about the latest version, v11.9.0, in the Maps SDK documentation.
import Mapbox
class LiveDataExample: UIViewController, MGLMapViewDelegate {
var source: MGLShapeSource!
var timer = Timer()
override func viewDidLoad() {
super.viewDidLoad()
// Create a new map view using the Mapbox Dark style.
let mapView = MGLMapView(frame: view.bounds,
styleURL: MGLStyle.darkStyleURL(withVersion: 9))
mapView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
mapView.tintColor = .gray
// Set the map view‘s delegate property.
mapView.delegate = self
view.addSubview(mapView)
}
func mapView(_ mapView: MGLMapView, didFinishLoading style: MGLStyle) {
if let url = URL(string: "https://wanderdrone.appspot.com/") {
// Add a source to the map. https://wanderdrone.appspot.com/ generates coordinates for simulated paths.
source = MGLShapeSource(identifier: "wanderdrone", url: url, options: nil)
style.addSource(source)
// Add a Maki icon to the map to represent the drone's coordinate. The specified icon is included in the Mapbox Dark style's sprite sheet. For more information about Maki icons, see https://www.mapbox.com/maki-icons/
let droneLayer = MGLSymbolStyleLayer(identifier: "wanderdrone", source: source)
droneLayer.iconImageName = NSExpression(forConstantValue: "rocket-15")
droneLayer.iconHaloColor = NSExpression(forConstantValue: UIColor.white)
style.addLayer(droneLayer)
// Create a timer that calls the `updateUrl` function every 1.5 seconds.
timer.invalidate()
timer = Timer.scheduledTimer(timeInterval: 1.5, target: self, selector: #selector(updateUrl), userInfo: nil, repeats: true)
}
}
@objc func updateUrl() {
// Update the icon's position by setting the `url` property on the source.
source.url = source.url
}
override func viewWillDisappear(_ animated: Bool) {
// Invalidate the timer if the view will disappear.
timer.invalidate()
timer = Timer()
}
}
#import "ViewController.h"
@import Mapbox;
@interface ViewController () <MGLMapViewDelegate>
@property (nonatomic, strong, nullable) NSTimer *timer;
@property MGLShapeSource *source;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Create a new map view using the Mapbox Dark style.
MGLMapView *mapView = [[MGLMapView alloc] initWithFrame:self.view.bounds styleURL:[MGLStyle darkStyleURL]];
mapView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
mapView.tintColor = [UIColor darkGrayColor];
// Set the map view‘s delegate property.
mapView.delegate = self;
[self.view addSubview:mapView];
}
- (void)mapView:(MGLMapView *)mapView didFinishLoadingStyle:(MGLStyle *)style {
// Add a source to the map. https://wanderdrone.appspot.com/ generates coordinates for simulated paths.
NSURL *url = [NSURL URLWithString:@"https://wanderdrone.appspot.com/"];
_source = [[MGLShapeSource alloc] initWithIdentifier:@"wanderdrone" URL:url options:nil];
[style addSource:_source];
// Add a Maki icon to the map to represent the drone's coordinate. The specified icon is included in the Mapbox Dark style's sprite sheet. For more information about Maki icons, see https://www.mapbox.com/maki-icons/
MGLSymbolStyleLayer *droneLayer = [[MGLSymbolStyleLayer alloc] initWithIdentifier:@"wanderdrone" source:_source];
droneLayer.iconImageName = [NSExpression expressionForConstantValue:@"rocket-15"];
[style addLayer:droneLayer];
// Create a timer that calls the `updateUrl` function every 1.5 seconds.
[_timer invalidate];
_timer = [NSTimer scheduledTimerWithTimeInterval:1.5 target:self selector:@selector(updateURL) userInfo:nil repeats:YES];
}
- (void)updateURL {
// Update the icon's position by setting the `url` property on the source.
_source.URL = _source.URL;
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
// Invalidate the timer if the view will disappear.
[_timer invalidate];
_timer = nil;
}
@end