fav_button - Dart API docs

Favorite Button is a flutter library that allows you to create heart and star shaped favorite featured buttons with animation effects too.

Omar Nasser

the default effects is Icons.favorite

  FavoriteButton(
            valueChanged: (_) {
            },
          ),

and you can also define custom effects.

 FavoriteButton(
            valueChanged: (_isFavorite) {
              print('Is Favorite $_isFavorite)');
            },
          )

parameter	description	default
icon	Icon	60.0
iconSize	size of button widget	60.0
iconColor	color of button widget	red for heart and yellow for star button respectively
valueChanged	Function that returns boolean value for current state of button	This is a required parameter
isFavorite or isStarred	Default state of button	This is a optional parameter