supportsAnnounceOf static method
- BuildContext context
Returns the MediaQueryData.supportsAnnounce accessibility setting for the nearest MediaQuery ancestor or false, if no such ancestor exists.
Use of this method will cause the given context to rebuild any time that
the MediaQueryData.supportsAnnounce property of the ancestor MediaQuery
changes. This is especially important for supportsAnnounce because supportsAnnounce has a
low frequency change rate. The performance difference between rebuilding
for all media query data changes and only rebuilding for supportsAnnounce is a
dramatic difference.
Prefer using this function over getting the attribute directly from the
MediaQueryData returned from of, because using this function will only
rebuild the context when this specific attribute changes, not when any
attribute changes.
Implementation
static bool supportsAnnounceOf(BuildContext context) => maybeSupportsAnnounceOf(context) ?? false;