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Element focus change on Flutter

Whenever an element receives focus, it should not automatically trigger an event which changes context. Example of changing context include, but are not limited to: automatically submitting data, opening a new screen or moving to another element. Focus should only be moved deliberately by the user.

In Flutter, you can use FocusNode to listen to focus changes. The flutter_hooks package includes a method named useFocusNode which makes it easier to listen to to focus changes.

Be careful when using the FocusNode listener: do not trigger any context change because they might confuse users.

import 'package:flutter/material.dart';
import 'package:flutter_hooks/flutter_hooks.dart';

class FocusWidget extends HookWidget {
    Widget build(BuildContext context) {
        final focusNode = useFocusNode();
        useEffect(() {
            focusNode.addListener(() {
                // Do not change context
        }, [focusNode]);

        return TextField(focusNode: focusNode);


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