Question

Is it possible to set a background on the clicked/selected listitem (for multiplescreen/tablet)?

Answer 1

Yes, use SetOnItemClickListener.

list  = (ListView)findViewById(R.id.listView1);

list.setOnItemClickListener(new OnItemClickListener() {
    @Override
    //ListView parent, View v, int position, long id 
    public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
        arg1.setBackgroundColor(Color.RED);
    }
});