Flutter - Collapsing ExpansionTile after choosing an item

Question

I\'m trying to get ExpansionTile to collapse after I choose an item, but it does not close the list that was opened.

I tried to use the onExpansio

Answer 1

I found a simple solution. Just add a global key to the ExpansionTile widget and it will work as intended.

ExpansionTile(
  key: GlobalKey(),
  title: Text(title),
  children: listTiles,
  ...
)

Not sure why this works, but my guess is that adding a key somehow forces the ExpansionTile widget to rebuild every time title is changed in setState, therefore return to its initial (collapsed) state.