Rating_bar | Rating_bar in Flutter

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A simple yet fully customizable rating bar for flutter which also include a rating bar  indicator, supporting any fraction of rating.
DEMO

Using Flutter Rating Bar #

Rating Bar can be used in three ways.

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:
dependencies:
  flutter_rating_bar: ^3.0.1+1

Import it



Now in your Dart code, you can use:


import 'package:flutter_rating_bar/flutter_rating_bar.dart';
1. First Way: #
Using itemBuilder
First Way

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


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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
 
    return MaterialApp(
      title: 'Welcome to Flutter',

      home: Scaffold(
        appBar: AppBar(
          title: Text('Welcome to Flutter'),
        ),
        body: Center(

          child: RatingBar(
          initialRating: 3,
          minRating: 1,
          direction: Axis.horizontal,
          allowHalfRating: true,
          itemCount: 5,
          itemPadding: EdgeInsets.symmetric(horizontal: 4.0),
          itemBuilder: (context, _) => Icon(
          Icons.star,
          color: Colors.amber,
            ),
            onRatingUpdate: (rating) {
              print(rating);
            },
          ),
       
        ),
      ),
    );
  }
}

2. Second Way: #
Using rating widgets
firstly add Images in your assets than follow below code
Second Way
import 'package:flutter/material.dart';
import 'package:flutter_rating_bar/flutter_rating_bar.dart';

void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Welcome to Flutter',  
      home: Scaffold(
        appBar: AppBar(
          title: Text('Welcome to Flutter'),
        ),
        body: Center(
          child: RatingBar(
          initialRating: 3,
          direction: Axis.horizontal,
          allowHalfRating: true,
          itemCount: 5,
          ratingWidget: RatingWidget(
          full: _image('assets/heart.png'),
          half: _image('assets/heart_half.png'),
          empty: _image('assets/heart_border.png'),
          ),
            itemPadding: EdgeInsets.symmetric(horizontal: 4.0),
            onRatingUpdate: (rating) {
            print(rating);
          },),  
        ),
      ),
    );
  }
}
3. Third Way: #
Using item builder with index
Third Way
import 'package:flutter/material.dart';
import 'package:flutter_rating_bar/flutter_rating_bar.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    
    return MaterialApp(
      title: 'Welcome to Flutter',  
      home: Scaffold(
        appBar: AppBar(
          title: Text('Welcome to Flutter'),
        ),
        body: Center(

          child: RatingBar(
    initialRating: 3,
    itemCount: 5,
    itemBuilder: (context, index) {
       switch (index) {
          case 0:
             return Icon(
                Icons.sentiment_very_dissatisfied,
                color: Colors.red,
             );
          case 1:
             return Icon(
                Icons.sentiment_dissatisfied,
                color: Colors.redAccent,
             );
          case 2:
             return Icon(
                Icons.sentiment_neutral,
                color: Colors.amber,
             );
          case 3:
             return Icon(
                Icons.sentiment_satisfied,
                color: Colors.lightGreen,
             );
          case 4:
              return Icon(
                Icons.sentiment_very_satisfied,
                color: Colors.green,
              );
       }
    },
    onRatingUpdate: (rating) {
      print(rating);
    },), 
        ),
      ),
    );
  }
}

Using Flutter Rating Bar Indicator

Indicator

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

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    
    return MaterialApp(
      title: 'Welcome to Flutter',  
      home: Scaffold(
        appBar: AppBar(
          title: Text('Welcome to Flutter'),
        ),
        body: Center(

          child: RatingBarIndicator(
    rating: 2.75,
    itemBuilder: (context, index) => Icon(
         Icons.star,
         color: Colors.amber,
    ),
    itemCount: 5,
    itemSize: 50.0,
    direction: Axis.horizontal,
), 
        ),
      ),
    );
  }
}
Flutter is Google’s UI toolkit for building beautiful, natively compiled applications for mobile, web, and desktop from a single codebase.

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