Flutter web - On hover how to change Flatbutton TEXT color

You can copy paste run full code below
You can use MouseRegion's onHover attribute

code snippet

void _incrementExit(PointerEvent details) {
    setState(() {
      textColor = Colors.blue;
      _exitCounter++;
    });
  }

void _updateLocation(PointerEvent details) {
    setState(() {
      textColor = Colors.red;
      x = details.position.dx;
      y = details.position.dy;
    });
  }
  
return MouseRegion(
      onEnter: _incrementEnter,
      onHover: _updateLocation,
      onExit: _incrementExit,
      child: FlatButton(
        color: Colors.white,
        textColor: Colors.teal[700], //when hovered text color change
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(5),

working demo

full code

import 'package:flutter/material.dart';

import 'package:flutter/widgets.dart';

void main() => runApp(MyApp());

/// This Widget is the main application widget.
class MyApp extends StatelessWidget {
  static const String _title = 'Flutter Code Sample';

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: _title,
      home: Scaffold(
        appBar: AppBar(title: const Text(_title)),
        body: Center(
          child: MyStatefulWidget(),
        ),
      ),
    );
  }
}

class MyStatefulWidget extends StatefulWidget {
  MyStatefulWidget({Key key}) : super(key: key);

  @override
  _MyStatefulWidgetState createState() => _MyStatefulWidgetState();
}

class _MyStatefulWidgetState extends State<MyStatefulWidget> {
  Color textColor = Colors.blue;
  int _enterCounter = 0;
  int _exitCounter = 0;
  double x = 0.0;
  double y = 0.0;

  void _incrementEnter(PointerEvent details) {
    setState(() {
      _enterCounter++;
    });
  }

  void _incrementExit(PointerEvent details) {
    setState(() {
      textColor = Colors.blue;
      _exitCounter++;
    });
  }

  void _updateLocation(PointerEvent details) {
    setState(() {
      textColor = Colors.red;
      x = details.position.dx;
      y = details.position.dy;
    });
  }


  @override
  Widget build(BuildContext context) {
    return MouseRegion(
      onEnter: _incrementEnter,
      onHover: _updateLocation,
      onExit: _incrementExit,
      child: FlatButton(
        color: Colors.white,
        textColor: Colors.teal[700], //when hovered text color change
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(5),
          side: BorderSide(
            color: Colors.teal[700],
          ),
        ),
        onPressed: () {},
        child: Text("Log in", style: TextStyle(color: textColor),),
      ),
    );
  }
}

You can change foregroundColor property of Button Style like this:

ElevatedButton.styleFrom().copyWith(
      backgroundColor: MaterialStateProperty.resolveWith<Color?>(
        (states) {
          if (states.contains(MaterialState.hovered)) {
            return Colors.blue;
          } else if (states.contains(MaterialState.pressed)) {
            return Colors.yellow;
          }
          return Colors.red;
        },
      ),
      foregroundColor: MaterialStateProperty.resolveWith<Color?>(
        (states) {
          if (states.contains(MaterialState.hovered)) {
            return Colors.green;
          }
          return Colors.black;
        },
      ),
    );

For the textButton we can use foregroundColor property of ButtonStyle.

TextButton(
style: ButtonStyle(
foregroundColor: MaterialStateProperty.resolveWith<Color>(
(Set<MaterialState> states) {
if (states.contains(MaterialState.focused))
  return Colors.red;
if (states.contains(MaterialState.hovered))
    return Colors.green;
if (states.contains(MaterialState.pressed))
    return Colors.blue;
return Colors.yellow; // null throus error in flutter 2.2+.
}),
),
onPressed: () { },
child: Text('TextButton with custom overlay colors'),
)

Update this might help someone, instead use

TextButton

here is code example:

TextButton(
  onPressed: () {},
  style: ButtonStyle(
    foregroundColor: MaterialStateProperty.resolveWith<Color>(
        (Set<MaterialState> states) {
      if (states.contains(MaterialState.hovered))
        return Colors.yellow;
      return Colors.blue;
    }),
  ),
  child: const Text(
    'Text Button ',
    style: TextStyle(fontSize: 24),
  ),
)

There's a package that achieves this using MouseRegion too.

https://pub.dev/packages/hovering

Example:

HoverButton(
  onpressed: () {​​​​​​
    print('test');
  }​​​​​​,
  color: Colors.green,
  hoverColor: Colors.red,
  hoverTextColor: Colors.blue,
  child: Text('test'),
)