getView() is called whenever a previously invisible list item needs to be drawn. Since you recreate itemChecked[]
each time this method is called you will have the new checkbox unchecked and a different Array for each resulting View. (final in Java does not make that field unique like in C)
Simplest way to solve that is to make itemChecked
a classmember and set / restore checkbox state based on that one.
public class MyListAdapter extends ArrayAdapter<Object> {
private final boolean[] mCheckedState;
private final Context mContext;
public MyListAdapter(Context context, int resource, int textViewResourceId, List<Object> objects) {
super(context, resource, textViewResourceId, objects);
mCheckedState = new boolean[objects.size()];
mContext = context;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// simplified to just a Checkbox
// ViewHolder and OnCheckedChangeListener stuff left out
CheckBox result = (CheckBox)convertView;
if (result == null) {
result = new CheckBox(mContext);
}
result.setChecked(mCheckedState[position]);
return result;
}
}