KeyboardVisibilityController().isVisible always returns false (Android)

[aemelyanovff]

Describe the bug

I'm trying to use the Example #3 - Direct Query (without subscription). It always returns that the keyboard it not visible.

Example 1 and Example 2 seem to work fine.

To Reproduce

Open or close the keyboard by clicking the text field, or click the button. Observe that KeyboardVisibilityController().isVisible is always false.

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

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key}) : super(key: key);

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            // Always shows false
            Text(
              'Is keyboard visible? ${KeyboardVisibilityController().isVisible}',
            ),
            ElevatedButton(
              onPressed: () {
                // Always prints false
                print(
                    'Is keyboard visible? ${KeyboardVisibilityController().isVisible}');
                setState(() {});
              },
              child: const Text('Button'),
            ),
            // Just to show/hide the keyboard
            const TextField(),
          ],
        ),
      ),
    );
  }
}

Expected behavior
Return true when the keyboard is visible.

Info (please complete the following information):
flutter_keyboard_visibility version: 5.2.0
Reproducible on platforms (Android, iOS, etc): Android (emulator)
flutter doctor output:

x@x /tmp/ko> flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 2.10.5, on macOS 11.6 20G165 darwin-x64, locale en-US)
[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 13.2.1)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2020.3)
[✓] VS Code (version 1.67.1)
[✓] VS Code (version 1.66.1)
[✓] Connected device (3 available)
[✓] HTTP Host Availability

Additional context
N/A

[zvikarp]

Assume you have hard-refreshed the app, correct? This plugin uses channel methods and to sync them you need to hard-refresh and not just hot-reload.

[delltrak]

am facing the same problem.

[aemelyanovff]

Assume you have hard-refreshed the app, correct? This plugin uses channel methods and to sync them you need to hard-refresh and not just hot-reload.

Yes.