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Google map updates current location every second

Hi, users of stackoferflow.

I am developing an Android application and this application implements Google Play Service

I already got my location and set a pin, as well as a circle on my maps.

What I want to achieve is when I move to some place, the circle also moves and puts my position in the center position .

My question is:

  • How to update my current location every 2-5 seconds, and the circle will also move to my new current location.

  • How to set the circle area as the area where the marker will be placed, so if the marker is not in my circle, it will not be displayed on the map.

thank

This is my code that I use for maps:

    mMap.setMyLocationEnabled(true);
    mMap.getUiSettings().setCompassEnabled(true);
    mMap.getUiSettings().setMyLocationButtonEnabled(true);
    mMap.getUiSettings().setRotateGesturesEnabled(true);

    locationManager = (LocationManager)getSystemService(LOCATION_SERVICE);
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
    locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, this);
    // 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);

    mMap.setInfoWindowAdapter(new InfoWindowAdapter() {

        @Override
        public View getInfoWindow(Marker arg0) {
            return null;
        }

        @Override
        public View getInfoContents(Marker marker) {
            View v = getLayoutInflater().inflate(R.layout.marker, null);
            TextView title= (TextView) v.findViewById(R.id.title);
            TextView info= (TextView) v.findViewById(R.id.info);
            title.setText(marker.getTitle().toString());
            info.setText(marker.getSnippet().toString());
            return v;
        }
    });

    if(location != null){
        double latitude = location.getLatitude();
        double longitude = location.getLongitude();
        myPosition = new LatLng(latitude, longitude);   

        CameraUpdate center = CameraUpdateFactory.newLatLngZoom(myPosition, 15);
        mMap.moveCamera(center);
        mMap.addMarker(new MarkerOptions()
            .position(myPosition)
            .alpha(0.8f)
            .anchor(0.0f, 1.0f)
            .icon(BitmapDescriptorFactory.fromResource(R.drawable.blue_pin))
            .title("Your position :\n ")
            .snippet(latitude + " and " + longitude));

        CircleOptions circleOptions = new CircleOptions()
          .center(myPosition)   //set center
          .radius(rad)   //set radius in meters
          .fillColor(0x402092fd)  //default
          .strokeColor(Color.LTGRAY)
          .strokeWidth(5);
          circle = mMap.addCircle(circleOptions);   

          CameraPosition cameraPosition = CameraPosition.builder()
                  .target(myPosition)
                  .zoom(15)
                  .bearing(90)
                  .build();

         mMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition),2000, null);
    }

Thanks =)

+3
3

, , . , , 1 , . .

    public void onReceive(final Context context, Intent intent) {
        this.context = context;
        Log.i(TAG, "onReceive");

        locationManager = (LocationManager) context
                .getSystemService(Context.LOCATION_SERVICE);
        if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
            listener = new LocationListener() {

                @Override
                public void onLocationChanged(Location location) {
                    // double valueLatitude = location.getLatitude();
                    // double valueLongitude= location.getLongitude();
                    double precision = Math.pow(10, 6);
                    double valueLatitude = ((int) (precision * location
                            .getLatitude())) / precision;
                    double valueLongitude = ((int) (precision * location
                            .getLongitude())) / precision;
                    Log.i(TAG, "onLocationChanged");
                    Log.v(TAG, "LAT: " + valueLatitude + " & LONG: "
                            + valueLongitude);
                    String lat = String.valueOf(valueLatitude);
                    String lng = String.valueOf(valueLongitude);
                    SessionManager.saveLocation(valueLatitude, valueLongitude, context);
                    Log.v(TAG, "LAT: SESSION" + SessionManager.getlattitude(context));
                    try {
                        if (!SessionManager.getlattitude(context).equals(
                                valueLatitude)
                                || !SessionManager.getlongitude(context)
                                .equals(valueLongitude)) {

                            SessionManager.saveLocation(valueLatitude,
                                    valueLongitude, context);
//                            if (Utils.progrsDia.isShowing()) {
//                                Utils.progrsDia.dismiss();
//                            }
//                            CategoryNearbyFragment.callGetNearByFlyerListListner
//                                    .callGetNearByFlyer(lat, lng);
                        }
                    } catch (Exception e) {
                        e.printStackTrace();
                    }

                }

                @Override
                public void onProviderDisabled(String arg0) {
                }

                @Override
                public void onProviderEnabled(String arg0) {
                }

                @Override
                public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
                }

            };
            if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(context, 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;
            }
            locationManager.requestSingleUpdate(
                    LocationManager.NETWORK_PROVIDER, listener, null);
        } else {
            // GlobalData.showSettingsAlert(context);
        }
    }
+1

How to update my current location every 2-5 second and the circle will also move to my new current location

Googles " " .

Android, ADT.

, , LocationListener onLocationChanged().

.

How to set my circle area as an area where the marker will place

0

I suggest using the onLocationChange () method to load updated coords into long lat variables, and then use a 5-second or 10 second handler to update the map object using the moveCamera () functions, so you will receive constant updates that are not annoying too often!

0
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