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问题:
My question is, does anyone know how to set google maps up, to open up both my location and in a zoomed in view?
Currently, the main view opens up to Africa, all the way zoomed out.
And so I have been searching for days now, and all I can find are:
1) You cannot animate two things (like zoom in and go to my location) in one google map? So if I can figure out how to set the zoom before I set the animate, then this problem would be solved. That tend tend to be the issue, you can change one, but not both.
2) I have found other classes that might be useful, but there is no help on how to set up the code so the class can manipulate the google map.
This is the code I have been holding on to so far, some works, some does not. Some I thought might be useful later on.
package com.MYWEBSITE.www; import com.google.android.gms.maps.CameraUpdateFactory; import com.google.android.gms.maps.GoogleMap; import com.google.android.gms.maps.SupportMapFragment; import com.google.android.gms.maps.model.LatLng; import android.content.Context; import android.location.Criteria; import android.location.Location; import android.location.LocationManager; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.view.Menu; public class MainActivity extends FragmentActivity { private GoogleMap map; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main_layout); map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap(); map.setMyLocationEnabled(true); //LocationSource a = (LocationSource) getSystemService(Context.LOCATION_SERVICE); //LocationManager b = (LocationManager) getSystemService(Context.LOCATION_SERVICE); //map.setLocationSource(a); Criteria criteria = new Criteria(); LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); String provider = locationManager.getBestProvider(criteria, false); Location location = locationManager.getLastKnownLocation(provider); double lat = location.getLatitude(); double lng = location.getLongitude(); LatLng coordinate = new LatLng(lat, lng); //CameraPosition.Builder x = CameraPosition.builder(); //x.target(coordinate); //x.zoom(13); //Projection proj = map.getProjection(); //Point focus = proj.toScreenLocation(coordinate); //map.animateCamera(CameraUpdateFactory.newLatLng(coordinate)); map.animateCamera(CameraUpdateFactory.zoomBy(13)); //map.moveCamera(CameraUpdateFactory.newLatLng(coordinate)); ////LatLngBounds bounds = mMap.getProjection().getVisibleRegion().latLngBounds; } }
回答1:
You cannot animate two things (like zoom in and go to my location) in one google map?
From a coding standpoint, you would do them sequentially:
CameraUpdate center= CameraUpdateFactory.newLatLng(new LatLng(40.76793169992044, -73.98180484771729)); CameraUpdate zoom=CameraUpdateFactory.zoomTo(15); map.moveCamera(center); map.animateCamera(zoom);
Here, I move the camera first, then animate the camera, though both could be animateCamera() calls. Whether GoogleMap consolidates these into a single event, I can't say, as it goes by too fast. :-)
Here is the sample project from which I pulled the above code.
Sorry, this answer is flawed. See Rob's answer for a way to truly do this in one shot, by creating a CameraPosition and then creating a CameraUpdate from that CameraPosition.
回答2:
It's possible to change location, zoom, bearing and tilt in one go. It is also possible to set the duration on the animatecamera call.
CameraPosition cameraPosition = new CameraPosition.Builder() .target(MOUNTAIN_VIEW) // Sets the center of the map to Mountain View .zoom(17) // Sets the zoom .bearing(90) // Sets the orientation of the camera to east .tilt(30) // Sets the tilt of the camera to 30 degrees .build(); // Creates a CameraPosition from the builder map.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
Have a look at the docs here:
https://developers.google.com/maps/documentation/android/views?hl=fr-FR#moving_the_camera
回答3:
this is simple solution for your question
LatLng coordinate = new LatLng(lat, lng); CameraUpdate yourLocation = CameraUpdateFactory.newLatLngZoom(coordinate, 5); map.animateCamera(yourLocation);
回答4:
Try in this way -
public class SummaryMapActivity extends FragmentActivity implements LocationListener{ private GoogleMap mMap; private LocationManager locationManager; private static final long MIN_TIME = 400; private static final float MIN_DISTANCE = 1000; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.summary_mapview); if (mMap == null) { // Try to obtain the map from the SupportMapFragment. mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)) .getMap(); // Check if we were successful in obtaining the map. if (mMap != null) { mMap.addMarker(new MarkerOptions().position(new LatLng(0, 0)).title("Marker")); } } mMap.setMyLocationEnabled(true); locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, MIN_TIME, MIN_DISTANCE, this); } @Override public void onLocationChanged(Location location) { LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude()); CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(latLng, 15); mMap.animateCamera(cameraUpdate); locationManager.removeUpdates(this); } @Override public void onProviderDisabled(String provider) { // TODO Auto-generated method stub } @Override public void onProviderEnabled(String provider) { // TODO Auto-generated method stub } @Override public void onStatusChanged(String provider, int status, Bundle extras) { // TODO Auto-generated method stub }
}
回答5:
You also could set both parameters like,
mMap.moveCamera( CameraUpdateFactory.newLatLngZoom(new LatLng(21.000000, -101.400000) ,4) );
This locates your map on a specific position and zoom. I use this on the setting up my map.
回答6:
Its a late answer but I think it will help. Use this method:
protected void zoomMapInitial(LatLng finalPlace, LatLng currenLoc) { try { int padding = 200; // Space (in px) between bounding box edges and view edges (applied to all four sides of the bounding box) LatLngBounds.Builder bc = new LatLngBounds.Builder(); bc.include(finalPlace); bc.include(currenLoc); googleMap.moveCamera(CameraUpdateFactory.newLatLngBounds(bc.build(), padding)); } catch (Exception e) { e.printStackTrace(); } }
Use this method after loading the map. Cheers!
回答7:
The simpliest way to do it is to use CancelableCallback. You should check the first action is complete and then call the second:
mMap.animateCamera(CameraUpdateFactory.newLatLngBounds(bounds, size.x, height, 0), new CancelableCallback() { @Override public void onFinish() { CameraUpdate cu_scroll = CameraUpdateFactory.scrollBy(0, 500); mMap.animateCamera(cu_scroll); } @Override public void onCancel() { } });
回答8:
1.Add xml code in your layout for displaying maps.
2.Enable google maps api then get api key place that below.
3.Add this code in oncreate.
MapFragment mapFragment = (MapFragment) getFragmentManager().findFragmentById(R.id.map); mapFragment.getMapAsync(UpadateProfile.this);
4.Add this code after oncreate. then access current location with marker placed in that
@Override public void onMapReady(GoogleMap rmap) { DO WHATEVER YOU WANT WITH GOOGLEMAP map = rmap; setUpMap(); } public void setUpMap() { map.setMapType(GoogleMap.MAP_TYPE_HYBRID); map.setMyLocationEnabled(true); map.setTrafficEnabled(true); map.setIndoorEnabled(true); map.getCameraPosition(); map.setBuildingsEnabled(true); map.getUiSettings().setZoomControlsEnabled(true); markerOptions = new MarkerOptions(); markerOptions.title("Outlet Location"); map.setOnMapClickListener(new GoogleMap.OnMapClickListener() { @Override public void onMapClick(LatLng point) { map.clear(); markerOptions.position(point); map.animateCamera(CameraUpdateFactory.newLatLng(point)); map.addMarker(markerOptions); String all_vals = String.valueOf(point); String[] separated = all_vals.split(":"); String latlng[] = separated[1].split(","); MyLat = Double.parseDouble(latlng[0].trim().substring(1)); MyLong = Double.parseDouble(latlng[1].substring(0,latlng[1].length()-1)); markerOptions.title("Outlet Location"); getLocation(MyLat,MyLong); } }); } public void getLocation(double lat, double lng) { Geocoder geocoder = new Geocoder(UpadateProfile.this, Locale.getDefault()); try { List addresses = geocoder.getFromLocation(lat, lng, 1); } catch (IOException e) { TODO Auto-generated catch block e.printStackTrace(); Toast.makeText(this,e.getMessage(),Toast.LENGTH_SHORT).show(); } } @Override public void onLocationChanged(Location location) { } @Override public void onStatusChanged(String provider, int status, Bundle extras) { } @Override public void onProviderEnabled(String provider) { } @Override public void onProviderDisabled(String provider) { }
回答9:
@CommonsWare's answer doesn't not actually work. I found that this is working properly :
map.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(-33.88,151.21), 15));
回答10:
You cannot animate two things (like zoom in and go to my location) in one google map.
So use move and animate Camera to zoom
googleMapVar.moveCamera(CameraUpdateFactory.newLatLng(LocLtdLgdVar)); googleMapVar.animateCamera(CameraUpdateFactory.zoomTo(10));
回答11:
gmap.animateCamera(CameraUpdateFactory.newCameraPosition(new CameraPosition(new LatLng(9.491327, 76.571404), 10, 30, 0)));
