android listview scrollto certain position(top)

final ListView listView = (ListView) findViewById(R.id.myListView);
Collections.addAll(values, values2);
adapter = new ArrayAdapter<String>(this,
 android.R.layout.simple_list_item_1, android.R.id.text1, values);

listView.setAdapter(adapter);


listView.post( new Runnable() {

int scrollOffset = -2;
int visibleChildCount = (listView.getLastVisiblePosition() - listView.getFirstVisiblePosition()) + 1;  // row count visible on screen
   @Override
   public void run() {
   
   
    listView.smoothScrollToPosition(visibleChildCount + scrollOffset + wantedPosition);
   
   }
 });

}