Show popup above map marker in MapView

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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,
                        <geopoint>,
                        <x offset if required>,
                        <y offset like pinHeight>,
                        MapView.LayoutParams.BOTTOM_CENTER);
map.addView(popUp, mapParams);

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