private void setSettleInfo() {
String[] infos = ShoppingCartBiz.getShoppingCount(mListGoods);
// 删除或者选择商品之后，需要通知结算按钮，更新自己的数据；
if (mChangeListener != null && infos != null) {
mChangeListener.onDataChange(infos[0], infos[1]);
}
}
private void selectAll() {
if (mChangeListener != null) {
mChangeListener.onSelectItem(isSelectAll);
}
}