Set different buttons for max zoom and min zoom in mapsforge

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Java

Mobile

Android

mapping

have edit my maps forge project to display different type o button for zoom in and zoom out. Now i would like to add different buttons when max zoom and min zoom are reached. How can i do this?

I have changed the classic buttons with this script

ImageButton zoomIn = (ImageButton) findViewById(R.id.zoomIn);
zoomIn.setBackgroundResource(R.drawable.action_click_zoom_in);
zoomIn.setOnClickListener(new View.OnClickListener() {
    public void onClick(View v) {

            mapView.getMapViewPosition().zoomIn();

    }

});

ImageButton zoomOut = (ImageButton) findViewById(R.id.zoomOut);
zoomOut.setBackgroundResource(R.drawable.action_click_zoom_out);
zoomOut.setOnClickListener(new View.OnClickListener() {
    public void onClick(View v) {

        mapView.getMapViewPosition().zoomOut();

    }
});