在Flutter 2.8:

AppBar(
    backgroundColor: YOUR_COLOR_HERE,
    toolbarHeight: 0,
);

没有一个答案似乎提到，你可以在你的主MaterialApp小部件ThemeData函数。

return MaterialApp(
  theme: ThemeData(
    appBarTheme: const AppBarTheme(
      systemOverlayStyle: SystemUiOverlayStyle(
        statusBarColor: Colors.white,
      ),
    ),
  ),
),

这也可以在darkTheme ThemeData中完成。

它可以通过两个步骤来实现:

使用FlutterStatusbarcolor包将状态栏颜色设置为与页面背景相匹配 使用AppBar设置状态栏按钮(电池，wifi等)的颜色。亮度的财产

如果你有一个AppBar:

  @override
  Widget build(BuildContext context) {
    FlutterStatusbarcolor.setStatusBarColor(Colors.white);
    return Scaffold(
      appBar: AppBar(
        brightness: Brightness.light,
        // Other AppBar properties
      ),
      body: Container()
    );
  }

如果你不想在页面中显示应用程序栏:

  @override
  Widget build(BuildContext context) {
    FlutterStatusbarcolor.setStatusBarColor(Colors.white);
    return Scaffold(
      appBar: AppBar(
        brightness: Brightness.light,
        elevation: 0.0,
        toolbarHeight: 0.0, // Hide the AppBar
      ),
      body: Container()
  }

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
      ),
    ),
  ),
) 

对于那些有iOS和Android颜色不一致的问题的人来说，这个方法对我来说很管用:

import 'dart:io';

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

return AppBar(
      systemOverlayStyle: (Platform.isIOS)
          ? SystemUiOverlayStyle.light
          : const SystemUiOverlayStyle(
            statusBarColor: pbsBlue,
            statusBarIconBrightness: Brightness.light,
            statusBarBrightness: Brightness.light,
          ),
      backgroundColor: Colors.blue,
      title: Text('Home'),
    );

请注意，这是AppBar可重用小部件的摘录。