flutter-scrolling-fab-animated

Flutter Scrolling Fab Animated

This package is a floating button whose change of size when scroll down and return to its original size when on top again. It's useful with ListView widget and other scrollable widgets.

With animated icon

New Features 💥

• Adding on long press support
• Adding ripple effect for the button
• Removing square shadow around the button when pressing it
• Added gradient background

Instalation

Include flutter_scrolling_fab_animated in your pubspec.yaml file:

dependencies:
  flutter:
    sdk: flutter
  flutter_scrolling_fab_animated: version

Usage

To use this package, just import it into your file and enjoy it.

import 'package:bottom_sheet_expandable_bar/bottom_sheet_bar_icon.dart';
import 'package:flutter_scrolling_fab_animated/flutter_scrolling_fab_animated.dart';

...

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Flutter Scrolling Fab Animated Demo'),
      ),
      body: Container(
        child: new ListView.builder(
          controller: _scrollController,
          itemCount: items.length,
          itemBuilder: (BuildContext ctxt, int index) {
            return new Card(
              child: ListTile(
                title: Text(items[index]),
              )
            );
          }
        ),
      ),
      floatingActionButton: ScrollingFabAnimated(
        icon: Icon(Icons.add, color: Colors.white,),
        text: Text('Add', style: TextStyle(color: Colors.white, fontSize: 16.0),),
        onPress: (){},
        scrollController: _scrollController,
        gradient: const LinearGradient(colors: [Color(0xff0CA2E6),Color(0xff2E3D97),],begin: Alignment.topCenter, end: Alignment.bottomCenter),
        animateIcon: true,
        inverted: false,
        radius: 10.0,
      )
    );
  }

...

Example with a GridView

import 'package:bottom_sheet_expandable_bar/bottom_sheet_bar_icon.dart';
import 'package:flutter_scrolling_fab_animated/flutter_scrolling_fab_animated.dart';

...

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Flutter Scrolling Fab Animated Demo'),
      ),
      body: Container(
        child: new GridView.builder(
          gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: 2),
          controller: _scrollController,
          itemCount: items.length,
          itemBuilder: (BuildContext ctxt, int index) {
            return new Card(
              child: ListTile(
                title: Center(child: Text(items[index])),
              )
            );
          }),
      ),
      floatingActionButton: ScrollingFabAnimated(
        icon: Icon(Icons.add, color: Colors.white,),
        text: Text('Add', style: TextStyle(color: Colors.white, fontSize: 16.0),),
        onPress: (){},
        scrollController: _scrollController,
        animateIcon: true,
        inverted: false,
        radius: 10.0,
      )
    );
  }

...

Properties

Name	Description	Required	Default
icon	Widget to use as button icon	True
text	Widget to use as button text when button is expanded	True
onPress	Function to use when press the button	True
scrollController	ScrollController to use to determine when user is on top or not	True
elevation	Double value to set the button elevation	False	5.0
shadowColor	Color value to set the button shadow color	False	ThemeData.shadowColor
width	Double value to set the button width when is expanded	False	120.0
height	Double value to set the button height	False	60.0
duration	Value to set the duration for animation	False	250 milliseconds
curve	Value to set the curve for animation	False	Curves.easeInOut
limitIndicator	Double value to set the boundary value when scroll animation is triggered	False	10.0
color	Color to set the button background color	False	Colors.blueAccent
gradient	Color to set the button background gradient	False	null
animateIcon	Value to indicate if animate or not the icon	False	true
inverted	Value to inverte the behavior of the animation	False	false
radius	Double value to set the button radius	False	null