Prova questo
PinItButton pinIt = (PinItButton) findViewById(R.id.pin_it);
pinIt.setImageUrl("http://images.frandroid.com/wp-content/uploads/2012/11/Test-LG-Nexus-4-Gauche.png");
pinIt.setUrl("http://vimeo.com/52397255");
pinIt.setDescription("Nexus 4");
pinIt.doPinIt(this);