Flutter焦点管理插件focus_widget_list的使用

focus_widget_list 是一个用于在列表中聚焦控件的 Flutter 插件。它允许你控制焦点、模糊颜色、模糊值，并且可以提供一系列的控件。

功能

• 聚焦控件
• 控制模糊颜色
• 控制模糊值
• 提供一系列的控件
• 支持空安全

示例项目

你可以查看 example 文件夹中的代码来了解如何使用这个插件。

示例代码

以下是使用 focus_widget_list 的完整示例代码：

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

import 'package:focus_widget_list/focus_widget_list.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(
        title: 'Test',
      ),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);

  final String title;

  [@override](/user/override)
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  void _incrementCounter() {
    setState(() {
      // 更新当前选中的索引
      index = (index + 1) % listOfWidget.length;
      test = !test;
    });
  }

  int index = 0;
  bool test = false;

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Stack(
          fit: StackFit.passthrough,
          children: [
            // 使用FocusWidget来管理焦点
            GestureDetector(
              behavior: HitTestBehavior.opaque,
              child: FocusWidget(
                widgetList: listOfWidget,
                blur: false, // 是否启用模糊效果
                index: index, // 当前选中的索引
              ),
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ),
    );
  }
}

// 定义一个包含多个CustomPopupMenu的列表
List<Widget> listOfWidget = [
  CustomPopupMenu(
    pressType: PressType.singleClick,
    barrierColor: Colors.transparent,
    enablePassEvent: true,
    menuBuilder: () {
      return Container(color: Colors.blue, child: const Text('data'));
    },
    child: GestureDetector(
      behavior: HitTestBehavior.translucent,
      child: Container(
        height: 50,
        color: Colors.amber[600],
        child: const Center(child: Text('Entry A')),
      ),
    ),
  ),
  CustomPopupMenu(
    pressType: PressType.singleClick,
    barrierColor: Colors.transparent,
    enablePassEvent: true,
    menuBuilder: () {
      return Container(color: Colors.blue, child: const Text('data'));
    },
    child: Container(
      height: 50,
      color: Colors.amber[500],
      child: const Center(child: Text('Entry B')),
    ),
  ),
  CustomPopupMenu(
    pressType: PressType.singleClick,
    barrierColor: Colors.transparent,
    enablePassEvent: true,
    menuBuilder: () {
      return Container(color: Colors.blue, child: const Text('data'));
    },
    child: Container(
      height: 50,
      color: Colors.amber[100],
      child: const Center(child: Text('Entry C')),
    ),
  ),
  CustomPopupMenu(
    pressType: PressType.singleClick,
    barrierColor: Colors.transparent,
    enablePassEvent: true,
    menuBuilder: () {
      return Container(color: Colors.blue, child: const Text('data'));
    },
    child: Container(
      height: 50,
      color: Colors.amber[600],
      child: const Center(child: Text('Entry A')),
    ),
  ),
  CustomPopupMenu(
    pressType: PressType.singleClick,
    barrierColor: Colors.transparent,
    enablePassEvent: true,
    menuBuilder: () {
      return Container(color: Colors.blue, child: const Text('data'));
    },
    child: Container(
      height: 50,
      color: Colors.amber[500],
      child: const Center(child: Text('Entry B')),
    ),
  ),
  CustomPopupMenu(
    pressType: PressType.singleClick,
    barrierColor: Colors.transparent,
    enablePassEvent: true,
    menuBuilder: () {
      return Container(color: Colors.blue, child: const Text('data'));
    },
    child: Container(
      height: 50,
      color: Colors.amber[100],
      child: const Center(child: Text('Entry C')),
    ),
  ),
];