Flutter滑动索引堆栈插件slide_indexed_stack的使用

Flutter滑动索引堆栈插件slide_indexed_stack的使用

SlideIndexedStack 是一个具有切换动画的 IndexedStack。通过它，您可以实现类似于标签页的切换效果，并且伴随着平滑的滑动动画。

使用

SlideIndexedStack 的使用方式与普通的 IndexedStack 类似。

int _currentIndex = 0;

SlideIndexedStack(
  axis: Axis.horizontal, // 指定滑动方向为水平方向
  slideOffset: 0.5, // 滑动偏移量
  index: _currentIndex, // 当前选中的索引
  duration: const Duration(milliseconds: 300), // 动画持续时间
  children: [
    _buildPage(0),
    _buildPage(1),
    _buildPage(2),
    _buildPage(3),
    _buildPage(4)
  ],
)

完整示例

以下是一个完整的示例，展示了如何在应用中使用 SlideIndexedStack 插件。

import 'package:flutter/material.dart';
import 'package:slide_indexed_stack/slide_indexed_stack.dart';

void main(List<String> args) {
  runApp(const Home());
}

class Home extends StatefulWidget {
  const Home({Key? key}) : super(key: key);

  [@override](/user/override)
  State<Home> createState() => _HomeState();
}

class _HomeState extends State<Home> {
  int _currentIndex = 0;

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        backgroundColor: Colors.red,
        body: SlideIndexedStack(
          axis: Axis.horizontal, // 设置滑动方向为水平方向
          slideOffset: 0.5, // 设置滑动偏移量
          index: _currentIndex, // 设置当前选中的索引
          duration: const Duration(milliseconds: 300), // 设置动画持续时间
          children: [
            _buildPage(0),
            _buildPage(1),
            _buildPage(2),
            _buildPage(3),
            _buildPage(4)
          ],
        ),
        bottomNavigationBar: BottomNavigationBar(
          selectedItemColor: Colors.blue,
          unselectedItemColor: Colors.black,
          currentIndex: _currentIndex,
          items: [
            BottomNavigationBarItem(
              icon: const Icon(Icons.menu, color: Colors.blue),
              label: '0',
            ),
            BottomNavigationBarItem(
              icon: const Icon(Icons.menu, color: Colors.blue),
              label: '1',
            ),
            BottomNavigationBarItem(
              icon: const Icon(Icons.menu, color: Colors.blue),
              label: '2',
            ),
            BottomNavigationBarItem(
              icon: const Icon(Icons.menu, color: Colors.blue),
              label: '3',
            ),
            BottomNavigationBarItem(
              icon: const Icon(Icons.menu, color: Colors.blue),
              label: '4',
            ),
          ],
          onTap: (index) => setState(() {
            _currentIndex = index;
          }),
        ),
      ),
    );
  }

  Widget _buildPage(int index) {
    return const Center(
      child: Padding(
        padding: EdgeInsets.all(8.0),
        child: Text(
          'On the other hand, we denounce with righteous indignation and dislike men who are so beguiled and demoralized by the charms of pleasure of the moment, so blinded by desire, that they cannot foresee the pain and trouble that are bound to ensue; and equal blame belongs to those who fail in their duty through weakness of will, which is the same as saying through shrinking from toil and pain. These cases are perfectly simple and easy to distinguish. In a free hour, when our power of choice is untrammelled and when nothing prevents our being able to do what we like best, every pleasure is to be welcomed and every pain avoided. But in certain circumstances and owing to the claims of duty or the obligations of business it will frequently occur that pleasures have to be repudiated and annoyances accepted. The wise man therefore always holds in these matters to this principle of selection: he rejects pleasures to secure other greater pleasures, or else he endures pains to avoid worse pains.',
        ),
      ),
    );
  }
}