Show popup above map marker in MapView

Question

I can\'t beleive there\'s no easy way to do such a basic thing like this... I want to show a popup/baloon (a LinearLayout) after user clicks on a map marker (something smila

Answer 1

The way I did is:

Put the markers at required GeoPoints by subclassing ItemizedOverlay, as described in http://developer.android.com/guide/tutorials/views/hello-mapview.html

Create a popup View by inflating from the layout:

View popUp = getLayoutInflater().inflate(R.layout.map_popup, map, false);

Use MapView.LayoutParams to position the popup with respect to GeoPoint in the ItemizedOverlay< OverlayItem >::onTap method. Popup will scroll automatically (without any additional code) when user scrolls the map. Basically popup gets tied to a GeoPoint, if user zooms, popup's position gets adjusted automatically.

MapView map = (MapView) findViewById(R.id.mapview);   
MapView.LayoutParams mapParams = new MapView.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 
                        ViewGroup.LayoutParams.WRAP_CONTENT,
                        ,
                        ,
                        ,
                        MapView.LayoutParams.BOTTOM_CENTER);
map.addView(popUp, mapParams);