I'am using maps api v2 in my app. I have to show my current location and target location on the map such that both the locations are visible (at the greatest possible zoom level) on the screen. Here is what i have tried so far...
googleMap = ((SupportMapFragment) getFragmentManager().findFragmentById(R.id.mapFragment)).getMap();
if(googleMap != null){
googleMap.setMyLocationEnabled(true);
LatLng targetLocationLatLng = new LatLng(modelObject.getLattitude(), modelObject.getLongitude());
LatLng currentLocationLatLng = new LatLng(this.currentLocationLattitude, this.currentLocationLongitude);
googleMap.addMarker(new MarkerOptions().position(targetLocationLatLng).title(modelObject.getLocationName()).icon(BitmapDescriptorFactory.fromResource(R.drawable.location_icon)));
LatLngBounds bounds = new LatLngBounds(currentLocationLatLng, targetLocationLatLng);
googleMap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds, 3));
}
App is force closing due to the following :
java.lang.IllegalStateException: Map size should not be 0. Most likely, layout has not yet occured for the map view.
How can i get max possible zoom level? Please help me.
In my project I use the com.google.android.gms.maps.model.LatLngBounds.Builder
Adapted to your source code it should look something like this:
Builder boundsBuilder = new LatLngBounds.Builder();
boundsBuilder.include(currentLocationLatLng);
boundsBuilder.include(targetLocationLatLng);
// pan to see all markers on map:
LatLngBounds bounds = boundsBuilder.build();
googleMap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds, 3));
A good method to avoid this problem is to use a ViewTreeObserver to the layout containing the map fragment and a listener, to ensure that the layout has first been initialised (and hasn't a width=0) using addOnGlobalLayoutListener, as below:
private void zoomMapToLatLngBounds(final LinearLayout layout,final GoogleMap mMap, final LatLngBounds bounds){
ViewTreeObserver vto = layout.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
#SuppressWarnings("deprecation")
#Override
public void onGlobalLayout() {
layout.getViewTreeObserver().removeGlobalOnLayoutListener(this);
mMap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds,OVERVIEW_MAP_PADDING));
}
});
}
Related
Is there any way to prevent user scroll pass a specific area using Google map?
I added a ground overlay on the map, and I don't want user scroll pass it. I found https://developers.google.com/maps/documentation/android-api/views#restrict-panning but user still can see a little map around the overlay (see image below). Any suggestions will be appreciated.
My code:
#Override
public void onMapReady(final GoogleMap mMap) {
final LatLngBounds bounds = new LatLngBounds(new LatLng(10.762657076386494, 106.65704530350968), new LatLng(10.783062032257044, 106.67223733537003));
mMap.addGroundOverlay(new GroundOverlayOptions().image(BitmapDescriptorFactory.fromResource(R.drawable.images))
.positionFromBounds(bounds));
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(bounds.getCenter(), 18));
mMap.setLatLngBoundsForCameraTarget(bounds);
}
I am using Mapbox android sdk for my map application, i want to use pointer icon('myIcon' in this case) which always points in the direction where user is moving.
I here is my code :
public void addMarker(MapboxMap mapboxmap) {
// marker view options : setting location and icon
MarkerViewOptions options = new MarkerViewOptions()
.position(latLng)
.anchor(0.5f, 0.5f)
.icon(myIcon);
MarkerView view = options.getMarker();
// added marker on map
mapboxMap.addMarker(options);
}
With marker views we don't expose a way to do this, and your only option is to adjust the marker rotation when the camera is rotated. A better solution would be to use runtime styling and a symbol layer. An example of this can be found in our demo app. To ensure that the marker always points in the correct direction you can use the icon-rotation-alignment property and set it to map. Hope this helps!
Setting rotation on location update {like setRotation(angle_you_want_to_set)} worked of me.
Example :
public void addMarker(MapboxMap mapboxmap, float angle) {
// marker view options : setting location and icon
MarkerViewOptions options = new MarkerViewOptions()
.position(latLng)
.anchor(0.5f, 0.5f)
//set angle of ration for icon
.setRotation(angle)
.icon(myIcon);
MarkerView view = options.getMarker();
// added marker on map
mapboxMap.addMarker(options);
}
In my project i want to add image at particular location in map.For that i used the following code.
public class Sample extends Activity {
#TargetApi(Build.VERSION_CODES.HONEYCOMB)
#SuppressLint("NewApi")
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.sample);
// Get a handle to the Map Fragment
GoogleMap map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
LatLng sydney = new LatLng(33.6671688,-117.9053506);
map.setMyLocationEnabled(true);
map.moveCamera(CameraUpdateFactory.newLatLngZoom(sydney, 15));
//add overlay
BitmapDescriptor image = BitmapDescriptorFactory.fromResource(R.drawable.categorymap);
GroundOverlayOptions groundOverlay = new GroundOverlayOptions()
.image(image)
.position(sydney, 1000f)
.transparency(0.1f);
map.addGroundOverlay(groundOverlay);
}
}
By using this code the map is displayed like the following screenshot.
But my requirement is add the image at particular location like the following screenshot.For that i have latitude and longitude values also to show the map location.In that location i want to add the image like following screenshot.
So my question is,how to move the image from left to right like the above screenshot.I tried alot for doing this but didnt solve the issue.So please suggest me how to solve this problem.Thanks inadvance to all...
Try to get the exact positions of the corners of the building and uses the method
public GroundOverlayOptions positionFromBounds (LatLngBounds bounds)
Then it should scale with the mapzoom
Another way is to use anchor
EDIT:
GroundOverlayOptions groundOverlay = new GroundOverlayOptions()
.image(image)
.position(sydney, 1000f)
.transparency(0.1f)
.anchor(0.5, 0.5);
This will instead make the lat/lon to be in center of your image.
My activity contains a MapFragment in a LinearLayout. I do the following
in onCreate:
I inflate this layout using setContentView in the onCreate method of
my activity.
Get a handle to the GoogleMap using getMap().
in onStart:
I get some place coordinates from an SQLite Database
add corresponding markers to the map
add these points to a LatLngBounds.Builder
animate the camera using newLatLngBounds(Builder.build(), 10)
According to maps api reference, I shouldn't call newLatLngBounds(LatLngBounds bounds, int padding) before making sure that the map has a size. I indeed get an IllegalStateException at this point. But what is the right method for waiting until the map has a size?
The solution by rusmus didn't work for me. I used this one instead:
map.setOnMapLoadedCallback(new GoogleMap.OnMapLoadedCallback() {
#Override
public void onMapLoaded() {
map.animateCamera(cameraUpdate);
}
});
If you know the map size, you can avoid waiting and move the camera before the map is displayed. We finally used the display size as an approximation of the map size (but you could find out the exact size if you want to be more precise):
final DisplayMetrics display = getResources().getDisplayMetrics();
final int padding = display.widthPixels / 20;
final CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngBounds(
boundsBuilder.build(), display.widthPixels, display.heightPixels, padding);
map.moveCamera(cameraUpdate);
I have succesfully used the following code in the past:
final LatLngBounds.Builder builder = new LatLngBounds.Builder();
final View mapView = fragment.getView();
final GoogleMap map = fragment.getMap():
//Add points to builder. And get bounds...
final LatLngBounds bounds = builder.build();
// Pan to see all markers in view.
// Cannot zoom to bounds until the map has a size.
if (mapView.getViewTreeObserver().isAlive()) {
mapView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
public void onGlobalLayout() {
mapView.getViewTreeObserver().removeGlobalOnLayoutListener(this);
map.animateCamera(CameraUpdateFactory.newLatLngBounds(bounds, 50), 1500, null);
}
});
}
With the latest GoogleServices you can use MapFragment.getMapAsync.
Directly from the docs
Sets a callback object which will be triggered when the GoogleMap instance is ready to be used.
I am using google map API 2 and showing multiple markers on it. My problem it that I want my camera to be positioned on all my markers.
I have done it for single marker as
myMap.moveCamera(CameraUpdateFactory.newLatLngZoom(MyLocation, 22));
I have Used Below Way to see all markers in view. It will Bound your Mapview including all the Lat-Long Location you have in your arraylist.
// Pan to see all markers in view.
// Cannot zoom to bounds until the map has a size.
final View mapView = getSupportFragmentManager().findFragmentById(R.id.map).getView();
if (mapView.getViewTreeObserver().isAlive()) {
mapView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
#SuppressLint("NewApi")
#Override
public void onGlobalLayout() {
LatLngBounds.Builder bld = new LatLngBounds.Builder();
for (int i = 0; i < YOUR_ARRAYLIST.size(); i++) {
LatLng ll = new LatLng(YOUR_ARRAYLIST.get(i).getPos().getLat(), YOUR_ARRAYLIST.get(i).getPos().getLon());
bld.include(ll);
}
LatLngBounds bounds = bld.build();
mMap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds, 70));
mapView.getViewTreeObserver().removeGlobalOnLayoutListener(this);
}
});
}
Hope it Will Help.