@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.FLAG_EDITOR_ACTION) {
        onSearchRequested();
        return false;
    }
    return false;
}

searchView.setOnSearchClickListener(new OnClickListener() {

    @Override
    public void onClick(View v) {
        onSearchRequested();

    }
});

searchView.setOnQueryTextListener(new OnQueryTextListener() {

    @Override
    public boolean onQueryTextSubmit(String query) {
        onSearchRequested();
        return false;
    }

    @Override
    public boolean onQueryTextChange(String newText) {
        // TODO Auto-generated method stub
        return false;
    }
});