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清理数据清单
原标题:Cleaning a Listview for data
  • 时间:2012-04-10 15:15:43
  •  标签:
  • android

I ve got a listView, an ArrayList. 从活动1中,我通过了一些数据,如价格和公司名称。 这一数据将储存在哈希姆的阿雷拉。 当我先把一些数据带给持有《名单》的第二项活动时,数据将载于该清单,但在我回到第一项活动并再次传递一些信息时,旧数据仍将列入清单。 我是否可以防止这种情况发生? 例如,当我从活动2返回活动1时,名单就会被删除。

感谢!

最佳回答

what you need to do: on the activity which holds the listView - override the onResume() method:

@Override
protected void onResume() {
    super.onResume();

    mArrayList.clear();
    mAdapter.notifyDataSetChanged();
}

如果你不赞成填写清单,那么你可以做以下工作:

@Override
protected void onResume() {
    super.onResume();

    mListView.removeAllViews();
}
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