执行 notifyDataSetChanged 时 ListView 出现 ClassCastException [英] ClassCastException with ListView when executing notifyDataSetChanged

问题描述

我在listVivew的头部添加了一个视图，

I have added a view to the header of listVivew,

    View TopSearch =  (View) View.inflate(this, R.layout.search, null);
    lv.addHeaderView(TopSearch, null, false);

一切都很好，直到我尝试执行(当数据更改时)

And everything is fine until I try to execute (when data changes)

adapter.notifyDataSetChanged();

这总是使我的应用程序崩溃并出现以下错误:

That always crash my application giving me following error:

> java.lang.ClassCastException: android.widget.HeaderViewListAdapter

如果我删除标题视图，则没有错误.有什么建议?谢谢.

If I remove header view then there is no error. Any suggestions? Thanks.

推荐答案

似乎每当您在列表视图中使用页眉/页脚视图时，您的 ListView 都会被 HeaderViewListAdapter 包裹起来.您可以使用以下代码修复此问题:

It seems that whenever you use header/footer views in a listview, your ListView gets wrapped with a HeaderViewListAdapter. You can fix this using the below code:

((YourAdapter)((HeaderViewListAdapter)lv.getAdapter()).getWrappedAdapter()).notifyDataSetChanged();

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