ExpansionTile Widget | Flutter | Dart

Описание к видео ExpansionTile Widget | Flutter | Dart

ExpansionTile is a single-line ListTile with an expansion arrow icon that expands or collapses the tile to reveal or hide the children.
This widget is typically used with ListView to create an "expand/collapse" list entry. When used with scrolling widgets like ListView, a unique PageStorageKey must be specified to enable the ExpansionTile to save and restore its expanded state when it is scrolled in and out of view.I show this widget with an example.
video link:    • ExpansionTile  Widget | Flutter | Dart  
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