如何在谷歌地图 api v2 上获取设备的当前位置？
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【中文标题】如何在谷歌地图 api v2 上获取设备的当前位置？【英文标题】：How to get current location of device on google maps api v2? 【发布时间】：2015-10-12 21:59:47 【问题描述】：我找到了一些方法可以做到这一点，但已被弃用或不起作用。我想从设备获取当前的纬度和经度。
这是我获取当前位置的方法，但是 GoogleMap getMyLocation() 方法 is deprecated：
void getCurrentLocation()
Location myLocation = map.getMyLocation();
if(myLocation!=null)
double dLatitude = myLocation.getLatitude();
double dLongitude = myLocation.getLongitude();
map.addMarker(new MarkerOptions().position(new LatLng(dLatitude, dLongitude))
.title("My Location").icon(BitmapDescriptorFactory
.defaultMarker(BitmapDescriptorFactory.HUE_RED)));
map.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(dLatitude, dLongitude), 8));
else
Toast.makeText(this, "Unable to fetch the current location", Toast.LENGTH_SHORT).show();
【问题讨论】：
在请别人写之前先展示一些代码/工作。 ***.com/questions/17519198/…希望此链接对您有所帮助。 不推荐使用 GPSTracker 类，见这里：gabesechansoftware.com/location-tracking 【参考方案1】：针对 api-23 及更高版本：
查看答案here。
针对 api-22 及更低版本：
实际上非常简单，建议使用 FusedLocationProviderAPI 而不是使用较旧的开源位置 API，尤其是因为您已经在使用 Google 地图，因此您已经在使用 Google Play 服务。
只需设置一个位置监听器，并在每个 onLocationChanged() 回调中更新您当前的位置标记。如果您只想更新一个位置，只需在第一个回调返回后取消注册回调即可。
public class MainActivity extends FragmentActivity
implements OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener,
LocationListener
private GoogleMap map;
private LocationRequest mLocationRequest;
private GoogleApiClient mGoogleApiClient;
private Location mLastLocation;
private Marker marker;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
@Override
protected void onResume()
super.onResume();
if (mGoogleApiClient == null || !mGoogleApiClient.isConnected())
buildGoogleApiClient();
mGoogleApiClient.connect();
if (map == null)
MapFragment mapFragment = (MapFragment) getFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
@Override
public void onMapReady(GoogleMap retMap)
map = retMap;
setUpMap();
public void setUpMap()
map.setMapType(GoogleMap.MAP_TYPE_HYBRID);
map.setMyLocationEnabled(true);
@Override
protected void onPause()
super.onPause();
if (mGoogleApiClient != null)
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
protected synchronized void buildGoogleApiClient()
Toast.makeText(this, "buildGoogleApiClient", Toast.LENGTH_SHORT).show();
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
@Override
public void onConnected(Bundle bundle)
Toast.makeText(this,"onConnected", Toast.LENGTH_SHORT).show();
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(1000);
mLocationRequest.setFastestInterval(1000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
//mLocationRequest.setSmallestDisplacement(0.1F);
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
@Override
public void onConnectionSuspended(int i)
@Override
public void onConnectionFailed(ConnectionResult connectionResult)
@Override
public void onLocationChanged(Location location)
mLastLocation = location;
//remove previous current location Marker
if (marker != null)
marker.remove();
double dLatitude = mLastLocation.getLatitude();
double dLongitude = mLastLocation.getLongitude();
marker = map.addMarker(new MarkerOptions().position(new LatLng(dLatitude, dLongitude))
.title("My Location").icon(BitmapDescriptorFactory
.defaultMarker(BitmapDescriptorFactory.HUE_RED)));
map.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(dLatitude, dLongitude), 8));
【讨论】：
抱歉直到现在才回复。我尝试了这段代码，但我不知道在哪里调用监听器 onLocationChanged，因为它不起作用。它假设是自动调用的，不是吗？ 我正在尝试使用我的设备。 @ReneLimon 抱歉，代码中有错误，它没有构建 GoogleApiClient。我刚刚用经过全面测试和工作的代码更新了答案！ @DanielNugent java.lang.RuntimeException：无法恢复活动 akashdubey.com.googlemapsdemo/akashdubey.com.googlemapsdemo.MapsActivity：java.lang.NullPointerException：尝试调用虚拟方法 'void com .google.android.gms.maps.MapFragment.getMapAsync(com.google.android.gms.maps.OnMapReadyCallback)' 在空对象引用上 @akash 确保您的布局 xml 中有地图，请在此处查看更新代码的答案：***.com/questions/34582370/…【参考方案2】：这一切正常，但所有内容都已弃用
private FusedLocationProviderClient fusedLocationClient;
fusedLocationClient = LocationServices.getFusedLocationProviderClient(this);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)
// TODO: Consider calling
// Activity#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for Activity#requestPermissions for more details.
return;
fusedLocationClient.getLastLocation()
.addOnSuccessListener(this, new OnSuccessListener<Location>()
@Override
public void onSuccess(Location location)
// Got last known location. In some rare situations this can be null.
if (location != null)
mylatitude = location.getLatitude();
mylongitude = location.getLongitude();
Log.d("chk", "onSuccess: "+mylongitude);
// Logic to handle location object
);
This link will be helpful
【讨论】：
【参考方案3】： public class MainActivity extends FragmentActivity implements OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
GoogleMap.OnMarkerDragListener,
GoogleMap.OnMapLongClickListener,
GoogleMap.OnMarkerClickListener, LocationListener,
View.OnClickListener
private static final String TAG = "MapsActivity";
Location mCurrentLocation;
String mLastUpdateTime;
private GoogleMap mMap;
private GoogleApiClient googleApiClient;
private Marker mCurrLocationMarker;
private LocationRequest mLocationRequest;
private ArrayList<LatLng> routePoints;
private Polyline line;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(map);
mapFragment.getMapAsync(this);
//Initializing googleApiClient
googleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
routePoints = new ArrayList<LatLng>();
@Override
public void onClick(View v)
@Override
public void onConnected(Bundle bundle)
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(1000);
mLocationRequest.setFastestInterval(1000);
mLocationRequest.setSmallestDisplacement(0.1F); //added
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY); //changed
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, mLocationRequest, this);
@Override
public void onConnectionSuspended(int i)
@Override
public void onConnectionFailed(ConnectionResult connectionResult)
@Override
public void onMapLongClick(LatLng latLng)
// mMap.clear();
mMap.addMarker(new MarkerOptions().position(latLng).draggable(true));
@Override
public boolean onMarkerClick(Marker marker)
Toast.makeText(MainActivity.this, "onMarkerClick", Toast.LENGTH_SHORT).show();
return true;
@Override
public void onMarkerDragStart(Marker marker)
Toast.makeText(MainActivity.this, "onMarkerDragStart", Toast.LENGTH_SHORT).show();
@Override
public void onMarkerDrag(Marker marker)
Toast.makeText(MainActivity.this, "onMarkerDrag", Toast.LENGTH_SHORT).show();
@Override
public void onMarkerDragEnd(Marker marker)
// getting the Co-ordinates
/* latitude = marker.getPosition().latitude;
longitude = marker.getPosition().longitude;*/
//move to current position
@Override
public void onMapReady(GoogleMap googleMap)
mMap = googleMap;
mMap.setMapType(GoogleMap.MAP_TYPE_SATELLITE);
// googleMapOptions.mapType(googleMap.MAP_TYPE_HYBRID)
// .compassEnabled(true);
/* LatLng india = new LatLng(20.5937, 78.9629);
mMap.addMarker(new MarkerOptions().position(india).title("Marker in India"));
mMap.moveCamera(CameraUpdateFactory.newLatLng(india));
mMap.setOnMarkerDragListener(this);
mMap.setOnMapLongClickListener(this);*/
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
mMap.setMyLocationEnabled(true);
@Override
protected void onStart()
googleApiClient.connect();
super.onStart();
@Override
protected void onStop()
googleApiClient.disconnect();
super.onStop();
@Override
public void onLocationChanged(Location location)
if (mCurrLocationMarker != null)
mCurrLocationMarker.remove();
mCurrentLocation = location;
mLastUpdateTime = DateFormat.getTimeInstance().format(new Date());
addMarker();
/* //Place current location marker
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerOptions.title("Current Position");
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));
mCurrLocationMarker = mMap.addMarker(markerOptions);
//move map camera
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mMap.animateCamera(CameraUpdateFactory.zoomTo(18));
PolylineOptions pOptions = new PolylineOptions()
.width(5)
.color(Color.GREEN)
.geodesic(true);
for (int z = 0; z < routePoints.size(); z++)
LatLng point = routePoints.get(z);
pOptions.add(point);
line = mMap.addPolyline(pOptions);
routePoints.add(latLng);*/
private void addMarker()
MarkerOptions options = new MarkerOptions();
IconGenerator iconFactory = new IconGenerator(this);
iconFactory.setStyle(IconGenerator.STYLE_GREEN);
options.icon(BitmapDescriptorFactory.fromBitmap(iconFactory.makeIcon(mLastUpdateTime)));
options.anchor(iconFactory.getAnchorU(), iconFactory.getAnchorV());
LatLng currentLatLng = new LatLng(mCurrentLocation.getLatitude(), mCurrentLocation.getLongitude());
options.position(currentLatLng);
mCurrLocationMarker = mMap.addMarker(options);
long atTime = mCurrentLocation.getTime();
mLastUpdateTime = DateFormat.getTimeInstance().format(new Date(atTime));
mCurrLocationMarker.setTitle(mLastUpdateTime);
Log.d(TAG, "Marker added.............................");
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(currentLatLng,
18));
mMap.animateCamera(CameraUpdateFactory.zoomTo(18));
PolylineOptions pOptions = new PolylineOptions()
.width(5)
.color(Color.BLACK)
.geodesic(true);
for (int z = 0; z < routePoints.size(); z++)
LatLng point = routePoints.get(z);
pOptions.add(point);
line = mMap.addPolyline(pOptions);
routePoints.add(currentLatLng);
Log.d(TAG, "Zoom done.............................");
【讨论】：
感谢您的帮助。您发布了一面代码墙。你不觉得有一些描述会更好吗？【参考方案4】：如下创建一个 GPSTracker 类
public class GPSTracker extends Service implements LocationListener
private final Context mContext;
// flag for GPS status
boolean isGPSEnabled = false;
// flag for network status
boolean isNetworkEnabled = false;
// flag for GPS status
boolean canGetLocation = false;
Location location; // location
double latitude; // latitude
double longitude; // longitude
// The minimum distance to change Updates in meters
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters
// The minimum time between updates in milliseconds
private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute
// Declaring a Location Manager
protected LocationManager locationManager;
public GPSTracker(Context context)
this.mContext = context;
getLocation();
public Location getLocation()
try
locationManager = (LocationManager) mContext
.getSystemService(LOCATION_SERVICE);
// getting GPS status
isGPSEnabled = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// getting network status
isNetworkEnabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled)
// no network provider is enabled
else
this.canGetLocation = true;
// First get location from Network Provider
if (isNetworkEnabled)
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("Network", "Network");
if (locationManager != null)
location = locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null)
latitude = location.getLatitude();
longitude = location.getLongitude();
// if GPS Enabled get lat/long using GPS Services
if (isGPSEnabled)
if (location == null)
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("GPS Enabled", "GPS Enabled");
if (locationManager != null)
location = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null)
latitude = location.getLatitude();
longitude = location.getLongitude();
catch (Exception e)
e.printStackTrace();
return location;
/**
* Stop using GPS listener Calling this function will stop using GPS in your
* app
* */
public void stopUsingGPS()
if (locationManager != null)
locationManager.removeUpdates(GPSTracker.this);
/**
* Function to get latitude
* */
public double getLatitude()
if (location != null)
latitude = location.getLatitude();
// return latitude
return latitude;
/**
* Function to get longitude
* */
public double getLongitude()
if (location != null)
longitude = location.getLongitude();
// return longitude
return longitude;
/**
* Function to check GPS/wifi enabled
*
* @return boolean
* */
public boolean canGetLocation()
return this.canGetLocation;
/**
* Function to show settings alert dialog On pressing Settings button will
* lauch Settings Options
* */
public void showSettingsAlert()
AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
// Setting Dialog Title
alertDialog.setTitle("GPS is settings");
// Setting Dialog Message
alertDialog
.setMessage("GPS is not enabled. Do you want to go to settings menu?");
// On pressing Settings button
alertDialog.setPositiveButton("Settings",
new DialogInterface.OnClickListener()
public void onClick(DialogInterface dialog, int which)
Intent intent = new Intent(
Settings.ACTION_LOCATION_SOURCE_SETTINGS);
mContext.startActivity(intent);
);
// on pressing cancel button
alertDialog.setNegativeButton("Cancel",
new DialogInterface.OnClickListener()
public void onClick(DialogInterface dialog, int which)
dialog.cancel();
);
// Showing Alert Message
alertDialog.show();
@Override
public void onLocationChanged(Location location)
@Override
public void onProviderDisabled(String provider)
@Override
public void onProviderEnabled(String provider)
@Override
public void onStatusChanged(String provider, int status, Bundle extras)
@Override
public IBinder onBind(Intent arg0)
return null;
在您想要获取当前位置的活动之后，请执行以下操作：
GPSTracker tracker;
在oncreate方法中：
tracker = new GPSTracker(MainActivity.this);
double lat=tracker.getLatitude();
double lng=tracker.getLongitude();
【讨论】：
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