<itemvalue="Whether this entry must be included in the tree even if there is a fully [opaque] entry above it. By default, if there is an entirely [opaque] entry over this one, then this one will not be included in the widget tree (in particular, stateful widgets within the overlay entry will not be instantiated). To ensure that your overlay entry is still built even if it is not visible, set [maintainState] to true. This is more expensive, so should be done with care. In particular, if widgets in an overlay entry with [maintainState] set to true repeatedly call [State.setState], the user's battery will be drained unnecessarily. This is used by the [Navigator] and [Route] objects to ensure that routes are kept around even when in the background, so that [Future]s promised from subsequent routes will be handled properly when they complete."/>
<itemvalue="Whether this entry occludes the entire overlay. If an entry claims to be opaque, then, for efficiency, the overlay will skip building entries below that entry unless they have [maintainState] set."/>
<itemvalue="rearrange"/>
<itemvalue="Insert the given entry into the overlay. If `below` is non-null, the entry is inserted just below `below`. If `above` is non-null, the entry is inserted just above `above`. Otherwise, the entry is inserted on top. It is an error to specify both `above` and `below`."/>
<itemvalue="The ParentDataWidget Expanded(flex: 1) wants to apply ParentData of type FlexParentData to a Iflutter ( 5852): RenderObject, which has been set up to accept ParentData of incompatible type BoxParentData. Iflutter ( 5852): Usually, this means that the Expanded widget has the wrong ancestor RenderObjectWidget. Typically, Iflutter ( 5852): Expanded widgets are placed directly inside Flex widgets. Iflutter ( 5852): The offending Expanded is currently placed inside a Padding widget. Iflutter ( 5852): The ownership chain for the RenderObject that received the incompatible parent data was: Iflutter ( 5852): RichText ← Container ← Expanded ← Padding ← DecoratedBox ← Container ← CreateNotificationItem ← Iflutter ( 5852): RepaintBoundary ← IndexedSemantics ← NotificationListener<KeepAliveNotification> ← ⋯"/>