Rating becomes zero when i scroll down in flutter

I am using flutter rating bar package to give feedback to particular section then rating becomes back to 0. ho w can i persist the given rating constant .

Here is the screenshot of the app ...

  RatingBar(
                                    initialRating: 0,
                                    direction: Axis.horizontal,
                                    allowHalfRating: false,
                                    itemCount: 5,
                                    ratingWidget: RatingWidget(
                                        full: const Icon(Icons.star,
                                            color: Colors.orange),
                                        half: const Icon(
                                          Icons.star_half,
                                          color: Colors.orange,
                                        ),
                                        empty: const Icon(
                                          Icons.star_outline,
                                          color: Colors.orange,
                                        )),
                                    onRatingUpdate: (value) {}),

i think its a flutter behavior. in case we have much children on listview, then when we scrolldown, the widget that out of screen will marked as dirty widget. then when we back scroll again , flutter will rebuild the widget.

Flutter already provide the solution here called

Destruction mitigation

you have to store the rating value to the object state. so when the widget get re-build , the value will automatically set from stored value.

other simple solution (not recomended) you can extend the cache of listview.

ListView(
 shrinkwrap: true,
 cacheExtent : 99999999 
 children: [
   RatingWidget(),
  ],

here the explanation to the chaceExtent

or another question in stackoverflow What exactly does cacheExtent property in ListView.Builder do?