Flutter评分条插件rating_bar_flutter的使用

Flutter评分条插件rating_bar_flutter的使用

安装

首先，在项目的pubspec.yaml文件中添加以下依赖：

dependencies:
  ...
  rating_bar_flutter: ^1.0.0

然后运行flutter pub get来获取该插件。

使用

首先导入rating_bar_flutter包：

import 'package:rating_bar_flutter/rating_bar_flutter.dart';

接下来，可以创建一个可交互的评分条：

class _MyHomePageState extends State<MyHomePage> {
  double _ratingStar = 0;

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text(widget.title)),
      body: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          // 显示当前评分
          Text(
            'Rating : $_ratingStar',
            style: Theme.of(context).textTheme.subhead,
          ),
          SizedBox(height: 8),
          // 可交互的评分条
          RatingBarFlutter(
            onRatingChanged: (rating) => setState(() => _ratingStar = rating!),
            filledIcon: Icons.star,
            emptyIcon: Icons.star_border,
          ),
        ],
      ),
    );
  }
}

你还可以使用只读模式的评分条：

class _MyHomePageState extends State<MyHomePage> {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text(widget.title)),
      body: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          // 显示只读评分
          Text(
            'Read Only Rating : 3.5',
            style: Theme.of(context).textTheme.subhead,
          ),
          SizedBox(height: 8),
          // 只读评分条
          RatingBarFlutter.readOnly(
            initialRating: 3.5,
            isHalfAllowed: true,
            halfFilledIcon: Icons.star_half,
            filledIcon: Icons.star,
            emptyIcon: Icons.star_border,
          ),
        ],
      ),
    );
  }
}

此外，你可以自定义评分条的最大评分、颜色等属性：

class _MyHomePageState extends State<MyHomePage> {
  double _ratingStarLong = 0;
  double _ratingSmile = 0;

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text(widget.title)),
      body: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          // 显示长评分
          Text(
            'Rating : $_ratingStarLong',
            style: Theme.of(context).textTheme.subhead,
          ),
          SizedBox(height: 8),
          // 自定义最大评分为10的评分条
          RatingBarFlutter(
            maxRating: 10,
            onRatingChanged: (rating) => setState(() => _ratingStarLong = rating!),
            filledIcon: Icons.star,
            emptyIcon: Icons.star_border,
            halfFilledIcon: Icons.star_half,
            isHalfAllowed: true,
            filledColor: Colors.amber,
            size: 36,
          ),
          SizedBox(height: 32),
          // 使用表情作为评分图标
          Text(
            'Rating : $_ratingSmile',
            style: Theme.of(context).textTheme.subhead,
          ),
          SizedBox(height: 8),
          RatingBarFlutter(
            onRatingChanged: (rating) => setState(() => _ratingSmile = rating!),
            filledIcon: Icons.sentiment_satisfied,
            emptyIcon: Icons.sentiment_dissatisfied,
            halfFilledIcon: Icons.sentiment_neutral,
            isHalfAllowed: true,
            filledColor: Colors.green,
            emptyColor: Colors.redAccent,
            halfFilledColor: Colors.amberAccent,
            size: 48,
          ),
        ],
      ),
    );
  }
}