Clickable Polylines Google Maps API Android

Question

I would like to click a spot on a Google maps v2 android map. If the clicked point intersects a point on a polyline path, then display the polyline. I do not see any documented clickable events for polylines in android. I tried to extend the current Polyline object (marked final)

What other options do I have?

Answer 1

You can use library: https://github.com/googlemaps/android-maps-utils

And detect clicks to polyline using next method (in OnMapClickListener):

  PolyUtil.isLocationOnPath(point, polyline.getPoints(), isGeodesic, tolerance);

Answer 2

With the recent update of the maps api, v8.4, introduces clickable Polyline

As mentioned in the doc:

Use the OnPolylineClickListener to listen to click events on a clickable polyline. To set this listener on the map, call googleMap.setOnPolylineClickListener(...). When a user clicks on a polyline, you will receive an onPolylineClick(Polyline) callback.

gradle-dependency:

compile 'com.google.android.gms:play-services-maps:8.4.0'

implement callback: GoogleMap.OnPolylineClickListener

initialize Polyline:

Polyline polyline = googleMap.addPolyline(options);
polyline.setClickable(true);
...

receive events

@Override
public void onPolylineClick(Polyline polyline) {
     ....
}

Happy coding :)

Answer 3

Register an OnMapClickListener. Determine if a given click is on your line yourself. If it is, do whatever it was you wanted to do in this case.