been trying for a while to sort my maps problem, which is the marker. every time the map updates it adds a new marker. this leaves several markers on the same location.
I want to get this sorted before adding other content like directions.
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
return;//
}
mMap.setMyLocationEnabled(true); // shows location on map
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
listener = new LocationUpdateListener();
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, listener);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, listener);
}
private void handleNewLocation(Location location) {
Log.d(TAG, location.toString());
double currentLatitude = location.getLatitude();
double currentLongitude = location.getLongitude();
LatLng latLng = new LatLng(currentLatitude, currentLongitude);
MarkerOptions options = new MarkerOptions() // This adds in a marker
.position(latLng)
.title("Reverse Geo Toast here ???"); // when marker clicked, it will display you are here
mMap.addMarker(options);
// mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
float zoomLevel = (float) 10; //This zooms into the marker
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, zoomLevel));
}
You can update the position of an existing marker using setPosition (Reference):
private Marker marker;
// ...
private void handleNewLocation(Location location) {
Log.d(TAG, location.toString());
double currentLatitude = location.getLatitude();
double currentLongitude = location.getLongitude();
LatLng latLng = new LatLng(currentLatitude, currentLongitude);
if (marker == null) {
MarkerOptions options = new MarkerOptions() // This adds in a marker
.position(latLng)
.title("Reverse Geo Toast here ???"); // when marker clicked, it will display you are here
marker = mMap.addMarker(options);
}
else {
marker.setPosition(latLng);
}
// mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
float zoomLevel = (float) 10; //This zooms into the marker
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, zoomLevel));
}
Related
I want to add an image into my map marker, I don't know why this code is not working. The marker is not displaying in my current location.If I move the marker to the onMap ready and assign the location to the LatLng one or two, it will work but when i move it to the OnLocationChanged, it will not work. I want to use it in the onLocationChanged
Here is the code.
onMapready
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
LatLng one = new LatLng(4.9757,8.3417);
LatLng two = new LatLng(4.9857,8.4417);
LatLngBounds.Builder builder = new LatLngBounds.Builder();
builder.include(one);
builder.include(two);
LatLngBounds bounds = builder.build();
int width = getResources().getDisplayMetrics().widthPixels;
int height = getResources().getDisplayMetrics().heightPixels;
int padding = (int) (width * 0.20);
mMap.setLatLngBoundsForCameraTarget(bounds);
mMap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds,width,height,padding));
mMap.setMinZoomPreference(mMap.getCameraPosition().zoom);
buildGoogleApiClient();
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
mMap.setMyLocationEnabled(true);
}
#Override
public void onLocationChanged(Location location) {
BitmapDescriptor imageDrawable = BitmapDescriptorFactory.fromResource(R.drawable.driver);
if (lastLocation !=null) {
lastLocation = location;
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mMap.addMarker(new MarkerOptions().position(latLng).title("My Location")
.icon(imageDrawable));
mMap.animateCamera(CameraUpdateFactory.zoomTo(10));
}
Thanks in advance
how I can get latitude and longitude from setMyLocationEnabled? while my code is this.
I need to use it to zoomin to location,
private void setUpMap() {
mMap.addMarker(new MarkerOptions().position(new LatLng(0,0)).title("Marker"));
mMap.setMyLocationEnabled(true);
mMap.animateCamera(CameraUpdateFactory.newLatLng());
mMap.animateCamera(CameraUpdateFactory.zoomBy(13));
}
For getting individual latitude and longitude, the following works for me.
mMap.setMyLocationEnabled(true);
double lat = mMap.getMyLocation().getLatitude();
double longt = mMap.getMyLocation().getLongitude();
Google map location API has the listeners you can get your current location by using this.
private GoogleMap.OnMyLocationChangeListener myLocationChangeListener = new GoogleMap.OnMyLocationChangeListener() {
#Override
public void onMyLocationChange(Location location) {
LatLng loc = new LatLng(location.getLatitude(), location.getLongitude());
mMarker = mMap.addMarker(new MarkerOptions().position(loc));
if(mMap != null){
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(loc, 16.0f));
}
}
};
And then set the listener for the map.
mMap.setOnMyLocationChangeListener(myLocationChangeListener);
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
mMap.setMyLocationEnabled(true);
LatLng bangalore = new LatLng(12.9667, 77.5667);
mMap.addMarker(new MarkerOptions().position(bangalore).title("Bengaluru"));
float zoomLevel = 12;
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(bangalore, zoomLevel));
}
that code zooming to bangalore area but i need for my current location
Use this code location.getLatitude(), location.getLongitude() used to get current location
LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
Criteria criteria = new Criteria();
Location location = locationManager.getLastKnownLocation(locationManager.getBestProvider(criteria, false));
if (location != null)
{
map.animateCamera(CameraUpdateFactory.newLatLngZoom(
new LatLng(location.getLatitude(), location.getLongitude()), 13));
CameraPosition cameraPosition = new CameraPosition.Builder()
.target(new LatLng(location.getLatitude(), location.getLongitude())) // Sets the center of the map to location user
.zoom(17) // Sets the zoom
.bearing(90) // Sets the orientation of the camera to east
.tilt(40) // Sets the tilt of the camera to 30 degrees
.build(); // Creates a CameraPosition from the builder
map.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
}
pass your current location in this function where you have placed your marker.
private void moveToCurrentLocation(LatLng currentLocation)
{
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(currentLocation,15));
// Zoom in, animating the camera.
mMap.animateCamera(CameraUpdateFactory.zoomIn());
// animating with a duration of 2 seconds.
mMap.animateCamera(CameraUpdateFactory.zoomTo(15), 2000, null);
}
LatLngBounds.Builder builder = new LatLngBounds.Builder();
mMap.getMap().setOnMyLocationChangeListener(new GoogleMap.OnMyLocationChangeListener() {
#Override
public void onMyLocationChange(Location location) {
if (location != null) {
LatLng latlng = new LatLng(location.getLatitude(), location.getLatitude());
builder.include(latlng);
LatLngBounds bounds = builder.build();
int padding = getScreenWidth(activity) / 10;
CameraUpdate cu = CameraUpdateFactory.newLatLngBounds(bounds, padding);
mMap.getMap().animateCamera(cu);
}
}
});
public static int getScreenWidth(Activity activity) {
Display display = activity.getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
return size.x;
}
how can I redirect my current Location when I open the Google Map
here is my code in SetUpMap()
private void setUpMap() {
mMap.addMarker(new MarkerOptions().position(new LatLng(0, 0)).title("Marker"));
mMap.setMyLocationEnabled(true);
And also how can I change the Marker ? I only get that blue circle in my location. I want to change it to a Pin
If you want to open map with your location through any activity then use this code
Intent intent = new Intent(android.content.Intent.ACTION_VIEW,
Uri.parse("http://maps.google.com/maps?saddr=20.344,34.34&daddr=20.5666,45.345"));
startActivity(intent);
If you are using Google map then using location find lat long and pass this lat long in maps object
LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
Criteria criteria = new Criteria();
String bestProvider = locationManager.getBestProvider(criteria, true);
Location location = locationManager.getLastKnownLocation(bestProvider);
if (location != null) {
onLocationChanged(location);
}
locationManager.requestLocationUpdates(bestProvider, 20000, 0, this);
public void onLocationChanged(Location location) {
TextView locationTv = (TextView) findViewById(R.id.latlongLocation);
double latitude = location.getLatitude();
double longitude = location.getLongitude();
LatLng latLng = new LatLng(latitude, longitude);
googleMap.addMarker(new MarkerOptions().position(latLng));
googleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
googleMap.animateCamera(CameraUpdateFactory.zoomTo(15));
locationTv.setText("Latitude:" + latitude + ", Longitude:" + longitude);
}
Get the current location of the user as soon as your Map is ready and you need to animate the camera like this
Location location = this.mGoogleMap.getMyLocation();
if (location != null) {
LatLng target = new LatLng(location.getLatitude(), location.getLongitude());
CameraPosition position = this.mGoogleMap.getCameraPosition();
Builder builder = new CameraPosition.Builder();
builder.zoom(15);
builder.target(target);
this.mGoogleMap.animateCamera(CameraUpdateFactory.newCameraPosition(builder.build()));
}
So, getMyLocation() has to fetch the location of the user. Use can use PROVIDERS to fetch the location. You can also listen to location using LocationListener using GoogleApiClient. Kindly read the documentation of Getting the Last Known Location and Receiving Location Updates before posting here.
To give the custom marker for your location there is something called addMarker
mGoogleMap.addMarker(new MarkerOptions()
.position(new LatLng(location.getLatitude(), location.getLogitude()))
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE)));
You can try with this code, We can get our location in google map by NETWORK_PROVIDER. NETWORK_PROVIDER pick your location from your WIFI location or your network provider companies like(IDEA,AIRTEL,VODAPHONE) .
try {
if (googleMap == null) {
googleMap = ((MapFragment) getFragmentManager()
.findFragmentById(R.id.map)).getMap();
}
googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
googleMap.setMyLocationEnabled(true);
LocationManager location_manager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
LocationListener listner = new getlatlngListner();
location_manager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, 2000, 2000, listner);
location_manager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
} catch (Exception e) {
e.printStackTrace();
}
private MarkerOptions mMarkerOptions = new MarkerOptions();
mMarkerOptions.visible(true);
mMarkerOptions.icon(BitmapDescriptorFactory.fromBitmap(Your bitmap));
mMap.setMyLocationEnabled(true);
mMap.getUiSettings().setMyLocationButtonEnabled(false);
mMap.setOnMyLocationChangeListener(new GoogleMap.OnMyLocationChangeListener() {
#Override
public void onMyLocationChange(Location location) {
LatLng mPos = new LatLng(location.getLatitude(),location.getLongitude());
mMarkerOptions.position(mPos);
mMap.addMarker(mMarkerOptions);
mMap.moveCamera(CameraUpdateFactory.newLatLng(mPos));
mMap.animateCamera(CameraUpdateFactory.zoomTo(17));
}
});
I have integrated Google Maps in my Android project. I am getting the view of the map on my device. I want to set the marker to my current location. I have done the following coding but it gives me a Null Pointer Exception on line 43 which is the following line
mMap.addMarker(new MarkerOptions()
.position(new LatLng(location.getLatitude(), location.getLongitude()))
.title("Hello world"));
My codes are as below. Please guide me step by step as to what is going wrong.
public class location extends Activity implements LocationListener {
private GoogleMap mMap;
LocationManager locationManager;
private static final long MIN_TIME = 400;
private static final float MIN_DISTANCE = 1000;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.map_location);
mMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.the_map)).getMap();
mMap.setMyLocationEnabled(true);
//mMap.addMarker(new MarkerOptions());
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, MIN_TIME, MIN_DISTANCE, this);
Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
mMap.addMarker(new MarkerOptions()
.position(new LatLng(location.getLatitude(), location.getLongitude()))
.title("Hello world"));
}
#Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(latLng, 10);
mMap.animateCamera(cameraUpdate);
// locationManager.removeUpdates(this);
}
Try below Code it worked for me..
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.map_location);
// Getting Google Play availability status
int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getBaseContext());
// Showing status
if(status!=ConnectionResult.SUCCESS){ // Google Play Services are not available
int requestCode = 10;
Dialog dialog = GooglePlayServicesUtil.getErrorDialog(status, this, requestCode);
dialog.show();
}else { // Google Play Services are available
// Getting reference to the SupportMapFragment of activity_main.xml
SupportMapFragment fm = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
// Getting GoogleMap object from the fragment
googleMap = fm.getMap();
// Enabling MyLocation Layer of Google Map
googleMap.setMyLocationEnabled(true);
// Getting LocationManager object from System Service LOCATION_SERVICE
LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
// Creating a criteria object to retrieve provider
Criteria criteria = new Criteria();
// Getting the name of the best provider
String provider = locationManager.getBestProvider(criteria, true);
// Getting Current Location
Location location = locationManager.getLastKnownLocation(provider);
LocationListener locationListener = new LocationListener() {
void onLocationChanged(Location location) {
// redraw the marker when get location update.
drawMarker(location);
}
if(location!=null){
//PLACE THE INITIAL MARKER
drawMarker(location);
}
locationManager.requestLocationUpdates(provider, 20000, 0, locationListener);
}
}
private void drawMarker(Location location){
googleMap.clear();
LatLng currentPosition = new LatLng(location.getLatitude(),location.getLongitude());
googleMap.addMarker(new MarkerOptions()
.position(currentPosition)
.snippet("Lat:" + location.getLatitude() + "Lng:"+ location.getLongitude()));
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE))
.title("ME"));
}
Ur code seems to be correct. Just check ur location object, it might be null.
#Override
public void onLocationChanged(Location location) {
// Add a marker in Sydney and move the camera
mLocation = location;
LatLng myLocation = new LatLng(mLocation.getLatitude(), mLocation.getLongitude());
mMap.addMarker(new MarkerOptions()
.position(myLocation)
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED))
.title("My Location"));
mMap.moveCamera(CameraUpdateFactory.newLatLng(myLocation));
Log.d("location", "Latitude:" + mLocation.getLatitude() + "\n" + "Longitude:" + mLocation.getLongitude());
}