Add Marker on Android Google Map via touch or tap

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Try using new Google Map API v2.

It’s easy to use and you can add a marker on tap like this:

map.setOnMapClickListener(new GoogleMap.OnMapClickListener() {
    @Override
    public void onMapClick(LatLng point) {
        allPoints.add(point);
        map.clear();
        map.addMarker(new MarkerOptions().position(point));
    }
});

or in Kotlin:

map.setOnMapClickListener {
    allPoints.add(it)
    map.clear()
    map.addMarker(MarkerOptions().position(it))
}

Note that you might want to remember all your added points in a list (allPoints), so you can re-draw or remove them later. An even better approach to remember the points would be to remember a Marker object for each of them – you can get the Marker object as a result from the addMarker function, it has a remove() function that easily removes the marker from the map.

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