Android添加书签(二)(22)

        } else { 
            b.setFavicon(null); 
        } 
    } 
 
    private class ChangeObserver extends ContentObserver { 
        public ChangeObserver() { 
            super(new Handler()); 
        } 
 
        @Override 
        public boolean deliverSelfNotifications() { 
            return true; 
        } 
 
        @Override 
        public void onChange(boolean selfChange) { 
            refreshList(); 
        } 
    } 
 
    private class MyDataSetObserver extends DataSetObserver { 
        @Override 
        public void onChanged() { 
            mDataValid = true; 
            notifyDataSetChanged(); 
        } 
 
        @Override 
        public void onInvalidated() { 
            mDataValid = false; 
            notifyDataSetInvalidated(); 
        } 
    } 
 
    // returns new position 
    public int moveItemUp(int position) { 
        if (position > 0) { 
            Bundle rowOnTop = getRow(position - 1, false); 
            Bundle rowUnder = getRow(position, false); 
 
            int upId = rowOnTop.getInt("id"); 
            rowOnTop.putInt("id", rowUnder.getInt("id")); 
            rowUnder.putInt("id", upId);