现有的解决方案对我没有帮助，因为我不使用AppBar，而且我不想在用户切换应用程序主题时做出声明。我需要一种反应式的方式来切换亮暗模式，发现AppBar使用了一个名为Semantics的小部件来设置状态栏的颜色。

基本上，我是这样做的:

return Semantics(
  container: false,  // don't make it a new node in the hierarchy
  child: AnnotatedRegion<SystemUiOverlayStyle>(
    value: SystemUiOverlayStyle.light,  // or .dark
    child: MyApp(),  // your widget goes here
  ),
);

语义从package:flutter/material.dart导入。 SystemUiOverlayStyle从package:flutter/services.dart导入。

在我的应用程序中完全正常

import 'package:flutter_statusbarcolor/flutter_statusbarcolor.dart';

void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    FlutterStatusbarcolor.setStatusBarColor(Colors.white);
    return MaterialApp(
      title: app_title,
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: HomePage(title: home_title),
    );
  }
}

(包)

乌利希期刊指南: 推荐解决方案(Flutter 2.0及以上)

SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
  statusBarColor: Colors.white
));

你可以改变它没有appbar给脚手架(backgroundColor: color);如果你把身体包裹起来，问题可能就解决了。我的意思是这个解决方案不是实践，但如果你不使用appbar，你可以用这种方式实现。

最好的办法就是不用包装

Scaffold(
      extendBodyBehindAppBar: true,
      appBar: AppBar(
        toolbarHeight: 0,
        backgroundColor: Colors.transparent,
        elevation: 0,
        systemOverlayStyle: const SystemUiOverlayStyle(
          statusBarColor: Colors.transparent, // <-- SEE HERE
          statusBarIconBrightness:
              Brightness.dark, //<-- For Android SEE HERE (dark icons)
          statusBarBrightness: Brightness.light,
        ),
      ),.......

最新的解决方案。Flutter 2.0及以上

对于使用AppBar的用户:

/// WORKS on the screen where appBar is used
Scaffold(
      appBar: AppBar(
        systemOverlayStyle: SystemUiOverlayStyle(
          // statusBarColor: Colors.red, // You can use this as well
          statusBarIconBrightness: Brightness.dark, // OR Vice Versa for ThemeMode.dark
          statusBarBrightness: Brightness.light, // OR Vice Versa for ThemeMode.dark
        ),
      ),
     ), 

对于那些不使用AppBar的人:

将下面的代码放在根屏幕的构建功能上，以影响下面的所有屏幕:

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

// This widget is the root of your application.
class MyApp extends StatelessWidget {

  /// WORKS on every screen EXCEPT the screen in which appBar is used
  SystemChrome.setSystemUIOverlayStyle(
    SystemUiOverlayStyle(
      // statusBarColor: Colors.red, // You can use this as well
      statusBarIconBrightness: Brightness.dark, // OR Vice Versa for ThemeMode.dark
      statusBarBrightness: Brightness.light, // OR Vice Versa for ThemeMode.dark
    ),
  );
  @override
  Widget build(BuildContext context) {}
}

将下面的代码放在单个屏幕的构建功能上，只影响该屏幕:

class SingleScreen extends StatelessWidget {

  /// WORKS on a single screen where appBar is NOT used
  SystemChrome.setSystemUIOverlayStyle(
    SystemUiOverlayStyle(
      // statusBarColor: Colors.red, // You can use this as well
      statusBarIconBrightness: Brightness.dark, // OR Vice Versa for ThemeMode.dark
      statusBarBrightness: Brightness.light, // OR Vice Versa for ThemeMode.dark
    ),
  );
  @override
  Widget build(BuildContext context) {}
}

更新Flutter 2.0(推荐):

在最新的Flutter版本上，您应该使用:

AppBar(
  systemOverlayStyle: SystemUiOverlayStyle(
    // Status bar color
    statusBarColor: Colors.red, 

    // Status bar brightness (optional)
    statusBarIconBrightness: Brightness.dark, // For Android (dark icons)
    statusBarBrightness: Brightness.light, // For iOS (dark icons)
  ),
)

只有Android(更灵活):

import 'package:flutter/services.dart';

void main() {
  SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
    systemNavigationBarColor: Colors.blue, // navigation bar color
    statusBarColor: Colors.pink, // status bar color
  ));
}

iOS和Android:

appBar: AppBar(
  backgroundColor: Colors.red, // Status bar color
)

这有点老套，但适用于iOS和Android:

Container(
  color: Colors.red, // Status bar color
  child: SafeArea(
    left: false,
    right: false,
    bottom: false,
    child: Scaffold(
      appBar: AppBar(
        backgroundColor: Colors.blue, // App bar color
      ),
    ),
  ),
)