findChildIndexBuilder method

int? findChildIndexBuilder({ required String id, required List<Asset> assets, int placeholderCount = 0, })

Indicates how would the grid found a reusable RenderObject through id. 为 Grid 布局指示如何找到可复用的 RenderObject。

See also:

• SliverChildBuilderDelegate.findChildIndexCallback.

Implementation

int? findChildIndexBuilder({
  required String id,
  required List<Asset> assets,
  int placeholderCount = 0,
}) =>
    null;