In Android Maps V2, is there a way to control the positioning of the map when a marker is tapped on? - google-maps-markers

Question

Currently, by default, when tapping a marker, the map centers on the marker. Is there a way to control that, introduce some offset values. I have a popup info window that is a little taller at times and I would like to position the map so it does not get cut off at the top.

Answer 1

You could likely override the GoogleMap marker click event and adjust the camera there.
For example
Maker lastOpened = null;
mMap.setOnMarkerClickListener(new OnMarkerClickListener() {
public boolean onMarkerClick(Marker marker) {
// Check if there is an open info window
if (lastOpened != null) {
// Close the info window
lastOpened.hideInfoWindow();
// Is the marker the same marker that was already open
if (lastOpened.equals(marker)) {
// Nullify the lastOpened object
lastOpened = null;
// Return so that the info window isn't opened again
return true;
}
}
// Open the info window for the marker
marker.showInfoWindow();
// Re-assign the last opened such that we can close it later
lastOpened = marker;
// Get the markers current position
LatLng curMarkerPos = marker.getPosition();
// Use the markers position to get a new latlng to move the camera to such that it adjusts appropriately to your infowindows height (might be more or less then 0.3 and might need to subtract vs add this is just an example)
LatLng camMove = new LatLng(curMarkerPos.latitude + 0.3, curMarkerPos.longitude);
// Create a camera update with the new latlng to move to
CameraUpdate camUpdate = CameraUpdateFactory.newLatLng(camMove);
// Move the map to this position
mMap.moveCamera(camUpdate);
// Event was handled by our code do not launch default behaviour.
return true;
}
});
mMap.setOnMapClickListener(new OnMapClickListener() {
#Override
public void onMapClick(LatLng point) {
if (lastOpened != null) {
// Hide the last opened
lastOpened.hideInfoWindow();
// Nullify lastOpened
lastOpened == null;
}
// Move the camera to the new position
final CameraPosition cameraPosition = new CameraPosition.Builder().target(point).zoom(mMap.getCameraPosition().zoom).build();
mMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
});
This code hasnt been tested but should at least give you a great start at it. The default behavior of onMarkerClick is to move the camera and open the info window. So overriding this and implementing your own should allow you to move the camera where u please.
Thanks, DMan

Answer 2

I modified the really nice answer above for anyone who just wants to remove the move-to-center default behavior of the marker click:
Add this to setUpMap():
mMap.setOnMarkerClickListener(getMarkerClickListener());
And then add method:
Marker lastOpened = null;
public OnMarkerClickListener getMarkerClickListener() {
return new OnMarkerClickListener() {
public boolean onMarkerClick(Marker marker) {
if (lastOpened != null) {
lastOpened.hideInfoWindow();
if (lastOpened.equals(marker)) {
lastOpened = null;
return true;
}
}
marker.showInfoWindow();
lastOpened = marker;
return true;
}
};
}