太多重复和填充！h
无论如何，这就是我要做的。简单，可重用。您可以在没有点击的情况下使用它（没有点击会禁用波纹效果）。也是半颗星。如果未指定颜色，则对填充的星星使用原色。
typedef void RatingChangeCallback(double rating);class StarRating extends StatelessWidget { final int starCount; final double rating; final RatingChangeCallback onRatingChanged; final Color color; StarRating({this.starCount = 5, this.rating = .0, this.onRatingChanged, this.color}); Widget buildStar(BuildContext context, int index) { Icon icon; if (index >= rating) { icon = new Icon( Icons.star_border, color: Theme.of(context).buttonColor, ); } else if (index > rating - 1 && index < rating) { icon = new Icon( Icons.star_half, color: color ?? Theme.of(context).primaryColor, ); } else { icon = new Icon( Icons.star, color: color ?? Theme.of(context).primaryColor, ); } return new InkResponse( onTap: onRatingChanged == null ? null : () => onRatingChanged(index + 1.0), child: icon, ); } @override Widget build(BuildContext context) { return new Row(children: new List.generate(starCount, (index) => buildStar(context, index))); }}You can then use it like this :
class Test extends StatefulWidget { @override _TestState createState() => new _TestState();}class _TestState extends State<Test> { double rating = 3.5; @override Widget build(BuildContext context) { return new StarRating( rating: rating, onRatingChanged: (rating) => setState(() => this.rating = rating), ); }}
