Is there such a function as the onFirstFix method in Api V2 Android cards?

Question

I can enable myLocation View in new Maps Api via setMyLocationEnabled .

In the first version of Api, there was a runOnFirstFix method, which allowed me to animate the map to the user's location after finding the location. I cannot find a listener or location similar to this in Api version 2.

Is there a solution for performing an action after the user is located?

Answer 1

Google Maps Android API V2 has a LocationSource. From the docs:

"The GoogleMap object has a built-in location provider for its level of my location, but you can replace it with another that implements this interface."

LocationSource

I assume that you will need to use this in conjunction with LocationSource.OnLocationChangedListener

Update

Figured it out. If you want to do something similar to runOnFirstFix, here is a basic example that waits until a custom location is available, and then animate the map to focus on its location.

public class MyLocationMapFragmentActivity extends FragmentActivity implements LocationListener, LocationSource { /** * Note that this may be null if the Google Play services APK is not available. */ private GoogleMap mMap; private OnLocationChangedListener mListener; private LocationManager locationManager; private Context mContext; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.basic_map); this.mContext = this; locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); //You may want to pass a different provider in as the first arg here //depending on the location accuracy that you desire //see LocationManager.getBestProvider() Criteria locationCriteria = new Criteria(); locationCriteria.setAccuracy(Criteria.ACCURACY_FINE); locationManager.requestLocationUpdates(locationManager.getBestProvider(locationCriteria, true), 1L, 2F, this); setUpMapIfNeeded(); } @Override public void onPause() { if(locationManager != null) { locationManager.removeUpdates(this); } super.onPause(); } @Override public void onResume() { super.onResume(); setUpMapIfNeeded(); if(locationManager != null) { mMap.setMyLocationEnabled(true); } } /** * Sets up the map if it is possible to do so (ie, the Google Play services APK is correctly * installed) and the map has not already been instantiated.. This will ensure that we only ever * call {@link #setUpMap()} once when {@link #mMap} is not null. * <p> * If it isn't installed {@link SupportMapFragment} (and * {@link com.google.android.gms.maps.MapView * MapView}) will show a prompt for the user to install/update the Google Play services APK on * their device. * <p> * A user can return to this Activity after following the prompt and correctly * installing/updating/enabling the Google Play services. Since the Activity may not have been * completely destroyed during this process (it is likely that it would only be stopped or * paused), {@link #onCreate(Bundle)} may not be called again so we should call this method in * {@link #onResume()} to guarantee that it will be called. */ private void setUpMapIfNeeded() { // Do a null check to confirm that we have not already instantiated the map. if (mMap == null) { // Try to obtain the map from the SupportMapFragment. mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.basicMap)).getMap(); // Check if we were successful in obtaining the map. //This is how you register the LocationSource mMap.setLocationSource(this); if (mMap != null) { setUpMap(); } } } /** * This is where we can add markers or lines, add listeners or move the camera. In this case, we * just add a marker near Africa. * <p> * This should only be called once and when we are sure that {@link #mMap} is not null. */ private void setUpMap() { mMap.setMyLocationEnabled(true); } @Override public void activate(OnLocationChangedListener listener) { mListener = listener; } @Override public void deactivate() { mListener = null; } @Override public void onLocationChanged(Location location) { if( mListener != null ) { mListener.onLocationChanged( location ); //Move the camera to the user location once it available! mMap.animateCamera(CameraUpdateFactory.newLatLng(new LatLng(location.getLatitude(), location.getLongitude()))); } } @Override public void onProviderDisabled(String provider) { // TODO Auto-generated method stub Toast.makeText(this, "provider disabled", Toast.LENGTH_SHORT).show(); } @Override public void onProviderEnabled(String provider) { // TODO Auto-generated method stub Toast.makeText(this, "provider enabled", Toast.LENGTH_SHORT).show(); } @Override public void onStatusChanged(String provider, int status, Bundle extras) { // TODO Auto-generated method stub Toast.makeText(this, "status changed", Toast.LENGTH_SHORT).show(); } } 

Update 2

If you are interested in focusing the map on the user's location when their location is disconnected from the screen (for example, MyLocationOverlay does in the old API), see this answer

or this blog post: Google Maps Android API V2 MyLocation LocationSource and event handling