maybeBrightnessOf static method Null safety

Brightness? maybeBrightnessOf(
  1. BuildContext context
)

Retrieves the Brightness to use for descendant Cupertino widgets, based on the value of CupertinoThemeData.brightness in the given context.

If no CupertinoTheme can be found in the given context, it will fall back to MediaQueryData.platformBrightness.

Returns null if no valid CupertinoTheme or MediaQuery widgets exist in the ancestry tree.

See also:

Implementation

static Brightness? maybeBrightnessOf(BuildContext context) {
  final _InheritedCupertinoTheme? inheritedTheme = context.dependOnInheritedWidgetOfExactType<_InheritedCupertinoTheme>();
  return inheritedTheme?.theme.data.brightness ?? MediaQuery.maybeOf(context)?.platformBrightness;
}