如何使用参数更改重建状态fulwidget页面

Question

在此处输入图像描述 [import'package'package：flutter/yaters.dart'; 导入'软件包：flutter_application_product/core/fit_container.dart';

  class ProductImages extends StatefulWidget {
    const ProductImages({Key? key, required this.images}) : super(key: key);
    final List<String> images;
    @override
    State<ProductImages> createState() => _ProductImagesState();
  }

  class _ProductImagesState extends State<ProductImages> {
    int currentId = 0;

    @override
    void initState() {
      super.initState();
    }

    @override
    Widget build(BuildContext context) {
      return Stack(
        alignment: Alignment.bottomCenter,
        children: \[
          PageView.builder(
            onPageChanged: (value) {
              print(value);
              currentId = value;
              
            },
            scrollDirection: Axis.horizontal,
            itemCount: widget.images.length,
            itemBuilder: (BuildContext context, int index) {
              return Padding(
                padding: const EdgeInsets.symmetric(horizontal: 10),
                child: FitContainer(imagePath: widget.images\[index\]),
              );
            },
          ),
          IconsDependsOnPage(widget: widget, currentId: currentId),
        \],
      );
    }
  }

  class IconsDependsOnPage extends StatefulWidget {
    const IconsDependsOnPage({
      Key? key,
      required this.widget,
      required this.currentId,
    }) : super(key: key);

    final ProductImages widget;
    final int currentId;

    @override
    State<IconsDependsOnPage> createState() => _IconsDependsOnPageState();
  }

  class _IconsDependsOnPageState extends State<IconsDependsOnPage> {
    @override
    Widget build(BuildContext context) {
      
      print(widget.currentId);
      print("selamlar");
      return SizedBox(
        height: 50,
        child: ListView.builder(
            scrollDirection: Axis.horizontal,
            itemCount: widget.widget.images.length,
            itemBuilder: (BuildContext context, int index) {
              return Icon(Icons.circle,
                  color: widget.currentId == index ? Colors.green : Colors.black);
            }),
      );
    }
  }][1]

我想对IconSdependsonPage说，您必须在您的参数（CurrentID）更改时重建，但是我尝试使用DIDUPDATEWIDGET，但不起作用，您能告诉我我该怎么做，或者您能为我提供有关此的链接或文档，谢谢你提前。这是我的第一个问题，很抱歉，如果我错误或不完全问这个问题。

Answer 1

尝试

onPageChanged: (value){
  print(value);
  setState((){
    currentId = value;
});
}