blocks|key|202801|text|您无法使用Google地图获取当前用户的位置。但是，如果您使用Google+Loader获取Google+Maps，则可以使用google.loader.CurrentLocation来获取基于IP的位置。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|202802|另一种方法是使用HTML5+GeoLocation+API。|202803|function+getLocation()+{
++if+(navigator.geolocation)+{
++++navigator.geolocation.getCurrentPosition(showPosition);
++}+else+{
++++alert("Geolocation+is+not+supported+by+this+browser.");
++}
}
function+showPosition(position)+{
++var+lat+=+position.coords.latitude;
++var+lng+=+position.coords.longitude;
++map.setCenter(new+google.maps.LatLng(lat,+lng));
}|code-block|syntax|javascript|202804|entityMap|0|LINK|mutability|MUTABLE|url|https://developers.google.com/loader/|1|https://stackoverflow.com/a/4919754/634863|2|http://dev.w3.org/geo/api/spec-source.html^0|V|D|0|1R|T|1|0|8|L|2|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]|$A|10|B|11|1|12]]|C|$]]|$1|D|3|E|5|6|7|13|8|@]|9|@$A|14|B|15|1|16]]|C|$]]|$1|F|3|G|5|H|7|17|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|18|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]|S|$5|N|O|P|C|$Q|T]]|U|$5|N|O|P|C|$Q|V]]]]

You can't get current user's location with Google Maps. However, if you get Google Maps with <a href="https://developers.google.com/loader/" rel="noreferrer">Google Loader</a>, you can use the <a href="https://stackoverflow.com/a/4919754/634863">google.loader.CurrentLocation</a> to get a location based on IP.

An other way is to use the <a href="http://dev.w3.org/geo/api/spec-source.html" rel="noreferrer">HTML5 GeoLocation API</a>. 

<pre class="lang-js prettyprint-override"><code>function getLocation() {
 if (navigator.geolocation) {
 navigator.geolocation.getCurrentPosition(showPosition);
 } else {
 alert("Geolocation is not supported by this browser.");
 }
}
function showPosition(position) {
 var lat = position.coords.latitude;
 var lng = position.coords.longitude;
 map.setCenter(new google.maps.LatLng(lat, lng));
}
</code></pre>

blocks|key|202847|text|如果您想继续使用google地图API，并且假设您有可以使用的map变量，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|202848|var+map+=+new+google.maps.Map(document.getElementById("map-canvas"),
++++++++mapOptions);

var+myLat+=+map.center.k;
var+myLng+=+map.center.B;|code-block|syntax|javascript|202849|或者你可以使用，|202850|alert("Lat="%2Bmap.center.k);
alert("Lng="%2Bmap.center.B);|202851|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

If you want to stay in the world of google maps API, and assuming you have the map variable you can use, 

<pre><code>var map = new google.maps.Map(document.getElementById("map-canvas"),
 mapOptions);

var myLat = map.center.k;
var myLng = map.center.B;
</code></pre>

or you could use,

<pre><code>alert("Lat="+map.center.k);
alert("Lng="+map.center.B);
</code></pre>

blocks|key|202889|text|对于未来寻找解决方案的人来说，谷歌现在在谷歌地图页面>+https://developers.google.com/maps/documentation/javascript/examples/map-geolocation上提供了一个地理定位示例|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|202890|entityMap|0|LINK|mutability|MUTABLE|url|https://developers.google.com/maps/documentation/javascript/examples/map-geolocation^0|S|2C|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

For people looking for a solution in the future, Google now has a Geolocation example on the Google Maps page > <a href="https://developers.google.com/maps/documentation/javascript/examples/map-geolocation" rel="noreferrer">https://developers.google.com/maps/documentation/javascript/examples/map-geolocation</a>

blocks|key|421188|text|import+UIKit
import+GoogleMaps
import+GooglePlaces
import+CoreLocation

class+ViewController:+UIViewController,CLLocationManagerDelegate,GMSMapViewDelegate+{

@IBOutlet+weak+var+currentlocationlbl:+UILabel!


var+mapView:GMSMapView!

var+locationManager:CLLocationManager!+=+CLLocationManager.init()

var+geoCoder:GMSGeocoder!

var+marker:GMSMarker!

var+initialcameraposition:GMSCameraPosition!

override+func+viewDidLoad()+{
++++super.viewDidLoad()
++++//+Do+any+additional+setup+after+loading+the+view,+typically+from+a+nib.

++++self.mapView+=+GMSMapView()
++++self.geoCoder+=+GMSGeocoder()
++++self.marker+=+GMSMarker()
++++self.initialcameraposition+=+GMSCameraPosition()

++++//+Create+gms+map+view------------->
++++mapView.frame+=+CGRect(x:+0,+y:+150,+width:+414,+height:+667)
++++mapView.delegate+=+self
++++mapView.isMyLocationEnabled+=+true
++++mapView.isBuildingsEnabled+=+false
++++mapView.isTrafficEnabled+=+false
++++self.view.addSubview(mapView)

++++//+create+cureent+location+label---------->

++++self.currentlocationlbl.lineBreakMode+=+NSLineBreakMode.byWordWrapping
++++self.currentlocationlbl.numberOfLines+=+3
++++self.currentlocationlbl.text+=+"Fetching+address.........!!!!!"

++++locationManager.delegate+=+self
++++locationManager.desiredAccuracy+=+kCLLocationAccuracyBestForNavigation
++++if+locationManager.responds(to:+#selector(CLLocationManager.requestAlwaysAuthorization))
++++{
++++++++self.locationManager.requestAlwaysAuthorization()
++++}
++++self.locationManager.startUpdatingLocation()

++++if+#available(iOS+9,+*)
++++{
++++self.locationManager.allowsBackgroundLocationUpdates+=+true
++++}
++++else
++++{
++++++++//fallback+earlier+version
++++}
++++self.locationManager.startUpdatingLocation()


++++self.marker.title+=+"Current+Location"
++++self.marker.map+=+self.mapView


++++//+Gps+button+add+mapview

++++let+gpbtn:UIButton!+=+UIButton.init()
++++gpbtn.frame+=+CGRect(x:+374,+y:+500,+width:+40,+height:+40)
++++gpbtn.addTarget(self,+action:+#selector(gpsAction),+for:+.touchUpInside)
++++gpbtn.setImage(UIImage(named:"gps.jpg"),+for:+.normal)
++++self.mapView.addSubview(gpbtn)
++++}

func+locationManager(_+manager:+CLLocationManager,+didUpdateLocations+locations:+[CLLocation])
{
++++var+location123+=+CLLocation()

++++location123+=+locations[0]

++++let+coordinate:CLLocationCoordinate2D!+=+CLLocationCoordinate2DMake(location123.coordinate.latitude,+location123.coordinate.longitude)

++++let+camera+=+GMSCameraPosition.camera(withTarget:+coordinate,+zoom:+16.0)

++++self.mapView.camera+=+camera
++++self.initialcameraposition+=+camera
++++self.marker.position+=+coordinate
++++self.locationManager.stopUpdatingLocation()

}


func+mapView(_+mapView:+GMSMapView,+idleAt+position:+GMSCameraPosition)
{
++++self.currentAddres(position.target)
}

func+currentAddres(_+coordinate:CLLocationCoordinate2D)+->+Void
{
++++geoCoder.reverseGeocodeCoordinate(coordinate)+{+(response,+error)+in

++++++++if+error+==+nil
++++++++{
++++++++++++if+response+!=+nil
++++++++++++{

++++++++++++++++let+address:GMSAddress!+=+response!.firstResult()

++++++++++++++++if+address+!=+nil
++++++++++++++++{
+++++++++++++++++++let+addressArray:NSArray!+=+address.lines!+as+NSArray

++++++++++++++++++++if+addressArray.count+>+1
++++++++++++++++++++{
++++++++++++++++++++++++var+convertAddress:AnyObject!+=+addressArray.object(at:+0)+as+AnyObject!
++++++++++++++++++++++++let+space+=+","
++++++++++++++++++++++++let+convertAddress1:AnyObject!+=+addressArray.object(at:+1)+as+AnyObject!
++++++++++++++++++++++++let+country:AnyObject!+=+address.country+as+AnyObject!

++++++++++++++++++++++++convertAddress+=+(((convertAddress.appending(space)+%2B+(convertAddress1+as!+String))+%2B+space)+%2B+(country+as!+String))+as+AnyObject

++++++++++++++++++++++++self.currentlocationlbl.text+=+"\(convertAddress!)".appending(".")
++++++++++++++++++++}
++++++++++++++++++++else
++++++++++++++++++++{
++++++++++++++++++++++++self.currentlocationlbl.text+=+"Fetching+current+location+failure!!!!"
++++++++++++++++++++}

++++++++++++++++}


++++++++++++}
++++++++}
++++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|421189|..。|unstyled|421190|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>import UIKit
import GoogleMaps
import GooglePlaces
import CoreLocation

class ViewController: UIViewController,CLLocationManagerDelegate,GMSMapViewDelegate {

@IBOutlet weak var currentlocationlbl: UILabel!


var mapView:GMSMapView!

var locationManager:CLLocationManager! = CLLocationManager.init()

var geoCoder:GMSGeocoder!

var marker:GMSMarker!

var initialcameraposition:GMSCameraPosition!

override func viewDidLoad() {
 super.viewDidLoad()
 // Do any additional setup after loading the view, typically from a nib.

 self.mapView = GMSMapView()
 self.geoCoder = GMSGeocoder()
 self.marker = GMSMarker()
 self.initialcameraposition = GMSCameraPosition()

 // Create gms map view-------------&gt;
 mapView.frame = CGRect(x: 0, y: 150, width: 414, height: 667)
 mapView.delegate = self
 mapView.isMyLocationEnabled = true
 mapView.isBuildingsEnabled = false
 mapView.isTrafficEnabled = false
 self.view.addSubview(mapView)

 // create cureent location label----------&gt;

 self.currentlocationlbl.lineBreakMode = NSLineBreakMode.byWordWrapping
 self.currentlocationlbl.numberOfLines = 3
 self.currentlocationlbl.text = "Fetching address.........!!!!!"

 locationManager.delegate = self
 locationManager.desiredAccuracy = kCLLocationAccuracyBestForNavigation
 if locationManager.responds(to: #selector(CLLocationManager.requestAlwaysAuthorization))
 {
 self.locationManager.requestAlwaysAuthorization()
 }
 self.locationManager.startUpdatingLocation()

 if #available(iOS 9, *)
 {
 self.locationManager.allowsBackgroundLocationUpdates = true
 }
 else
 {
 //fallback earlier version
 }
 self.locationManager.startUpdatingLocation()


 self.marker.title = "Current Location"
 self.marker.map = self.mapView


 // Gps button add mapview

 let gpbtn:UIButton! = UIButton.init()
 gpbtn.frame = CGRect(x: 374, y: 500, width: 40, height: 40)
 gpbtn.addTarget(self, action: #selector(gpsAction), for: .touchUpInside)
 gpbtn.setImage(UIImage(named:"gps.jpg"), for: .normal)
 self.mapView.addSubview(gpbtn)
 }

func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation])
{
 var location123 = CLLocation()

 location123 = locations[0]

 let coordinate:CLLocationCoordinate2D! = CLLocationCoordinate2DMake(location123.coordinate.latitude, location123.coordinate.longitude)

 let camera = GMSCameraPosition.camera(withTarget: coordinate, zoom: 16.0)

 self.mapView.camera = camera
 self.initialcameraposition = camera
 self.marker.position = coordinate
 self.locationManager.stopUpdatingLocation()

}


func mapView(_ mapView: GMSMapView, idleAt position: GMSCameraPosition)
{
 self.currentAddres(position.target)
}

func currentAddres(_ coordinate:CLLocationCoordinate2D) -&gt; Void
{
 geoCoder.reverseGeocodeCoordinate(coordinate) { (response, error) in

 if error == nil
 {
 if response != nil
 {

 let address:GMSAddress! = response!.firstResult()

 if address != nil
 {
 let addressArray:NSArray! = address.lines! as NSArray

 if addressArray.count &gt; 1
 {
 var convertAddress:AnyObject! = addressArray.object(at: 0) as AnyObject!
 let space = ","
 let convertAddress1:AnyObject! = addressArray.object(at: 1) as AnyObject!
 let country:AnyObject! = address.country as AnyObject!

 convertAddress = (((convertAddress.appending(space) + (convertAddress1 as! String)) + space) + (country as! String)) as AnyObject

 self.currentlocationlbl.text = "\(convertAddress!)".appending(".")
 }
 else
 {
 self.currentlocationlbl.text = "Fetching current location failure!!!!"
 }

 }


 }
 }
 }
}
</code></pre>

...

I'm having some trouble when i want to get current location.

This is my first time using this GM API, and there are so much things i don't understand.

Here is my code, and i want 

<pre class="lang-js prettyprint-override"><code>var geocoder = new google.maps.Geocoder();

function initialize() {
 var latLng = new google.maps.LatLng(-7.7801502, 110.3846387);
 var map = new google.maps.Map(document.getElementById('mapCanvas'), {
 zoom: 15,
 center: latLng,
 mapTypeId: google.maps.MapTypeId.ROADMAP
 });

 var marker = new google.maps.Marker({
 position: latLng,
 title: 'Ambarrukmo Plaza Yogyakarta',
 map: map,
 draggable: true
 });
}
</code></pre>

The problem is, i want to change -7.7801502 and 110.3846387 value automatically based on user's current position. Can i do that?

Thanks before for your help and explanation.

Another question :
-> What if i'm going to change those value based on a device embedded with GPS?

Get Current Location On Google Map

当我想知道现在的位置时遇到了一些麻烦。这是我第一次使用这个通用API，有太多的事情我不明白。这是我的代码，我想var geocoder = new google.maps.Geocoder();function initialize() {  var latLng = new google.maps.LatLng(-7...

问在Google地图上获取当前位置
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问在Google地图上获取当前位置EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问在Google地图上获取当前位置
EN