RawKeyboardListener not fired any event in Flutter web

Question

Here it is simple code inside some widget. The RawKeyboardListener's onKey is not triggered! So the question why? Is it a bug?

Container(
  child: StreamProvider<Item>.value(
    value: stream
    child: Consumer<Item>(
      builder: (_, item, __) {
        return RawKeyboardListener(
          focusNode: focusNode,
          onKey: (event) {
            print(event); // NOT PRINTED!!
          }
          child: TextField(
            controller: controller,
            ...
          ),
        );
      }
    ),
  ),
),

P.S. Flutter is 1.17.0-3.2pre, Dart is 2.8.0-dev.20.10

Solution

I think you need to add this line to the top of your builder method:

FocusScope.of(context).requestFocus(focusNode);

Your code should look like this:

Container(
  child: StreamProvider<Item>.value(
    value: stream
    child: Consumer<Item>(
      builder: (_, item, __) {
        FocusScope.of(context).requestFocus(focusNode); // Add this line

        return RawKeyboardListener(
          focusNode: focusNode,
          onKey: (event) {
            print(event); // NOT PRINTED!!
          }
          child: TextField(
            controller: controller,
            ...
          ),
        );
      }
    ),
  ),
),