如何在ListView中滚动项目以便可见? [英] How to scroll item in ListView so it is visible?

问题描述

将新项目(例如ListTile)添加到ListView时，是否可以将新添加的项目滚动到视图中?新项目可能不在列表的底部(例如，按字母顺序排序).

When adding new items (e.g. a ListTile) to a ListView is there a way to scroll the newly added item into view? The new item may not be at the bottom of the list (e.g. it is sorted alphabetically).

推荐答案

您可以使用ListView. html"rel =" nofollow noreferrer> ScrollController .

You can scroll through a ListView using a ScrollController.

final scrollController = ScrollController();

// ...
ListView(controller: scrollController // ...
);
// ...
scrollController.animateTo(height, duration: Duration(milliseconds: 678), 
  curve: Curves.ease);

您将必须自己确定高度.可以使用商品的索引和商品的总高度来完成.

You will have to determine the height yourself. That could be done using the index of your item and the general item height.

这里有一个完整示例.

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