Nested ExpandablePanels Misbehaving

[LuckierDodge]

Tried to nest multiple ExpandablePanels inside each other today, and discovered a bit of a hiccup: if you expand the root panel, all of its children are expanded as well. Likewise, if you collapse any of the child panels, the whole tree collapses.

Is this something I could circumvent with a custom Expandable Widget?

[aryzhov]

In this case, you don't need a custom Expandable. What you need is to wrap your nested ExpandablePanel with ExpandableNotifier. What's happening is ExpandablePanel creates an ExpandableNotifier, which contains the expanded state, only if it's not present in the context. So the inner ExpandablePanel finds the ExpandableNotifier of the outer ExpandablePanel. Wrapping it with an ExpandableNotifier would make it have own, independent state.

[LuckierDodge]

Worked like a charm, and with a solid explanation to boot. Thank you sir!

[aryzhov]

Glad I could help!