flutter中去除导航栏与状态栏

  SystemChrome.setEnabledSystemUIMode(SystemUiMode.manual, overlays: [SystemUiOverlay.bottom]);  //隐藏状态栏 上方黑边

  SystemChrome.setEnabledSystemUIMode(SystemUiMode.manual, overlays: [SystemUiOverlay.top]); //隐藏导航栏

  SystemChrome.setEnabledSystemUIMode(SystemUiMode.manual, overlays: []);  // 隐藏状态栏和导航栏  上方黑板

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter App',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: Scaffold(
        appBar: AppBar(
          backgroundColor: Colors.transparent, // 设置AppBar为透明
          elevation: 0, // 去除AppBar的阴影
        ),
        body: Container(
          // 这里是页面内容
        ),
      ),
    );
  }
}

import 'dart:async'; // 导入使用Timer需要的库
import 'package:flutter/material.dart';
import 'package:flutter/services.dart'; // 导入使用SystemChrome需要的库

void main() {
  runApp(MyApp()); // 运行应用程序
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo', // 设置应用程序的标题
      home: Scaffold(
        body: MyHomePage(), // 设置主页面为 MyHomePage 组件
      ),
    );
  }
}

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

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  bool _isFullScreen = false; // 判断是否全屏

  Timer? _timer; // 定时器

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

    // 初始化定时器，在每3秒钟检查一次是否需要退出全屏模式
    _timer = Timer.periodic(Duration(seconds: 3), (timer) {
      if (_isFullScreen) {
        setState(() {
          SystemChrome.setEnabledSystemUIMode(SystemUiMode.manual, overlays: [SystemUiOverlay.top]);
          _isFullScreen = false;
        });
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    return GestureDetector(
      onTap: () {
        if (_isFullScreen) {
          // 如果已经全屏就退出全屏
          setState(() {
            SystemChrome.setEnabledSystemUIMode(SystemUiMode.manual, overlays: [SystemUiOverlay.top]);
            _isFullScreen = false;
          });
        } else {
          // 如果不是全屏就进入全屏
          setState(() {
            SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersive, overlays: []);
            _isFullScreen = true;
          });
        }
      },
      onVerticalDragUpdate: (DragUpdateDetails details) {
        if (_isFullScreen) {
          // 如果是全屏就退出全屏
          setState(() {
            SystemChrome.setEnabledSystemUIMode(SystemUiMode.manual, overlays: [SystemUiOverlay.top]);
            _isFullScreen = false;
          });
        }
      },
      child: Container(
        color: Colors.white, // 设置容器背景颜色为白色
        child: Center(
          child: Text('点击屏幕进入全屏，滑动屏幕退出全屏'), // 在屏幕中央显示文本
        ),
      ),
    );
  }

  @override
  void dispose() {
    _timer?.cancel(); // 取消定时器
    super.dispose();
  }
}