Can't save instance state in android

Can't save instance state in android

In my app I try to save ArrayList state with putSerializable method in
onSaveInstanceState. And restore it in onCreate and
onRestoreInstanceState. In my app if there is no saved instance of this
object it will be create from internet data. But all the time I try to
test this solution ArrayList start to downloading from network. Can anyone
help me?
public class Activity extends SherlockActivity {
ListView listView;
SlidingMenu slidingMenu;
ArrayList<HashMap<String, String>> newsList = null;
String url = "/////here_my_url////";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setTitle(R.string.news_vatican);
listView = (ListView) findViewById(R.id.newslist);
slidingMenu = new SlidingMenu(this);
slidingMenu.setMode(SlidingMenu.LEFT);
slidingMenu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
slidingMenu.setFadeDegree(0.35f);
slidingMenu.attachToActivity(this, SlidingMenu.SLIDING_CONTENT);
slidingMenu.setMenu(R.layout.slidingmenu);
slidingMenu.setBehindOffset(150);
if (savedInstanceState != null){
newsList = (ArrayList<HashMap<String, String>>)
savedInstanceState.getSerializable("list");
Log.e("Activity", "RESTORING");
} else {
Log.e("Activity", "PARSING NEW");
JSONParser parser = new JSONParser(this);
parser.execute(url);
try {
newsList = parser.get();
} catch (InterruptedException e) {
e.printStackTrace();
Log.e("Activity", "Failed to get newslist");
} catch (ExecutionException e) {
e.printStackTrace();
Log.e("Activity", "Failed to get newslist");
}
}
listView.setAdapter(new NewsAdapter(getApplicationContext(), newsList));
}
@Override
protected void onSaveInstanceState(Bundle savedInstanceState) {
savedInstanceState.putSerializable("list", newsList);
super.onSaveInstanceState(savedInstanceState);
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
newsList = (ArrayList<HashMap<String, String>>)
savedInstanceState.getSerializable("list");
}