RawKeyboardListener constructor Null safety

const RawKeyboardListener(
  1. {Key? key,
  2. required FocusNode focusNode,
  3. bool autofocus = false,
  4. bool includeSemantics = true,
  5. ValueChanged<RawKeyEvent>? onKey,
  6. required Widget child}
)

Creates a widget that receives raw keyboard events.

For text entry, consider using a EditableText, which integrates with on-screen keyboards and input method editors (IMEs).

The focusNode and child arguments are required and must not be null.

The autofocus argument must not be null.

Implementation

const RawKeyboardListener({
  super.key,
  required this.focusNode,
  this.autofocus = false,
  this.includeSemantics = true,
  this.onKey,
  required this.child,
}) : assert(focusNode != null),
     assert(autofocus != null),
     assert(includeSemantics != null),
     assert(child != null);