<itemvalue="A material expansion panel. It has a header and a body and can be either expanded or collapsed. The body of the panel is only visible when it is expanded. {@youtube 560 315 https:www.youtube.comwatch?v=2aJZzRMziJc} Expansion panels are only intended to be used as children for [ExpansionPanelList]."/>
<itemvalue="reduced map ids"/>
<itemvalue="初始化"/>
<itemvalue="is ultra wide screen"/>
@ -60,12 +61,11 @@
<itemvalue="An [Expanded] widget must be a descendant of a [Row], [Column], or [Flex], and the path from the [Expanded] widget to its enclosing [Row], [Column], or [Flex] must contain only [StatelessWidget]s or [StatefulWidget]s (not other kinds of widgets, like [RenderObjectWidget]s)."/>
<itemvalue="Using an [Expanded] widget makes a child of a [Row], [Column], or [Flex] expand to fill the available space along the main axis (e.g., horizontally for a [Row] or vertically for a [Column]). If multiple children are expanded, the available space is divided among them according to the [flex] factor."/>
<itemvalue="A widget that expands a child of a [Row], [Column], or [Flex] so that the child fills the available space."/>