flutter开发实战-手势Gesture与ListView滚动竞技场的可滑动关闭组件

import 'package:flutter/material.dart';
 
class SlidableDismissibleListView extends StatefulWidget {
  @override
  _SlidableDismissibleListViewState createState() => _SlidableDismissibleListViewState();
}
 
class _SlidableDismissibleListViewState extends State<SlidableDismissibleListView> {
  final items = List<String>.generate(30, (i) => 'Item ${i + 1}');
 
  @override
  Widget build(BuildContext context) {
    return ListView.builder(
      itemCount: items.length,
      itemBuilder: (context, index) {
        final item = items[index];
        return Dismissible(
          key: ValueKey(item),
          onDismissed: (direction) {
            setState(() {
              items.removeAt(index);
            });
          },
          child: Slidable(
            actionPane: SlidableDrawerActionPane(),
            actionExtentRatio: 0.25,
            child: ListTile(title: Text(item)),
            actions: <Widget>[
              IconSlideAction(
                icon: Icons.delete,
                color: Colors.red,
                onTap: () {},
              ),
              IconSlideAction(
                icon: Icons.archive,
                color: Colors.blue,
                onTap: () {},
              ),
            ],
          ),
        );
      },
    );
  }
}

这个代码实例展示了如何在Flutter中结合使用Dismissible和Slidable组件，实现一个可以通过滑动来删除列表项的列表。Dismissible负责处理滑动事件，而Slidable负责显示滑出后可进行的操作按钮。这个例子简洁明了，并且使用了ListView.builder来优化长列表的性能。