[Android] It's possible to show the touch selection handles when using a mouse

[justinmc]

On native Android apps, when using a mouse, the selection handles don't show. However on Flutter, it's possible to get them to show up.

Steps to reproduce:

1. Get an Android device and connect a mouse to it.
2. Run an app with a text field, such as the one below.
3. Enter some text.
4. Right click.
5. Press "Select all"

Expected results

All the text is highlighted and no selection handles are shown.

Actual results

All the text is highlighted but selection handles appear.

Code

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

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

class MyHomePage extends StatelessWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: const <Widget>[
            TextField(),
          ],
        ),
      ),
    );
  }
}

[darshankawar]

I was able to replicate the reported behavior on S10+ device with latest sdk versions.

stable : 3.29.3
master : 3.32.0-1.0.pre.400