smoothScrollToPosition后notifyDataSetChanged不是在Android平台 [英] smoothScrollToPosition after notifyDataSetChanged not working in android

问题描述

我有一个ListView的设置和工作确定一个自定义的适配器。点击一个按钮的东西在基础数据发生变化，所以notifyDataSetChanged需要刷新的ListView。精细。但我也想在ListView滚动到发生变化的地方就行了。为此，我的notifyDataSetChanged后立即拨打smoothScrollToPosition。这是行不通的。

I've got a custom Adapter for a ListView setup and working ok. On a button click something is changed in the underlying data, so a notifyDataSetChanged is required to refresh the ListView. Fine. But I also want the ListView to scroll to the line where the change occurred. For this I call smoothScrollToPosition immediately after the notifyDataSetChanged. And that is not working.

如果我不叫notifyDataSetChanged然后滚动的作品，所以通知块滚动。我可能有与事件的未来被处理的斗争。任何人都可以给我什么错误的指针？

If I do not call notifyDataSetChanged then the scroll works, so the notify blocks the scroll. I'm probably having a fight with events being processed in the future. Can anybody give me a pointer on what is going wrong?

推荐答案

使用后（）方法来等待列表以完成更新之后您调用 notifyDataSetChanged（）：

Use the post() method to wait for the list to finish updating after you call notifyDataSetChanged():

adapter.notifyDataSetChanged();
list.post( new Runnable() {
    @Override
    public void run() {
    //call smooth scroll
    }
  });

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