listener.java

spinerCategoriaLugar.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
        String categoria = (String) spinerCategoriaLugar.getSelectedItem();
    }

    @Override
    public void onNothingSelected(AdapterView<?> adapterView) {
        // No seleccionaron nada
    }
});