当您不使用AppBar时，更改状态栏的颜色

首先导入这个

import 'package:flutter/services.dart';

现在使用下面的代码改变状态栏的颜色在你的应用程序，当你不使用AppBar

SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle.dark.copyWith(

    statusBarColor: AppColors.statusBarColor,/* set Status bar color in Android devices. */
    
    statusBarIconBrightness: Brightness.dark,/* set Status bar icons color in Android devices.*/
    
    statusBarBrightness: Brightness.dark)/* set Status bar icon color in iOS. */
); 

在iOS中使用安全区域时，更改状态栏的颜色

Scaffold(
  body: Container(
    color: Colors.red, /* Set your status bar color here */
    child: SafeArea(child: Container(
      /* Add your Widget here */
    )),
  ),
); 

完整的示例

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

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

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

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

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

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return AnnotatedRegion<SystemUiOverlayStyle>(
      value: const SystemUiOverlayStyle(
        systemNavigationBarColor: Colors.red, // navigation bar color
        systemNavigationBarIconBrightness: Brightness.light, //navigation bar icons' color
      ),
      child: Scaffold(
        appBar: AppBar(
          backgroundColor: Colors.red,
          title: const Text('data'),
          systemOverlayStyle: SystemUiOverlayStyle.dark.copyWith(
            statusBarColor: Colors.red,
            statusBarIconBrightness: Brightness.light,
          ),
        ),
      ),
    );
  }
}

对我有用的方法(适用于那些不用AppBar的人)

添加AppbBar首选颜色，然后设置:toolbarHeight: 0

 child: Scaffold(
    appBar: AppBar(
      toolbarHeight: 0,
      backgroundColor: Colors.blue,
      brightness: Brightness.light,
    )

对于那些使用AppBar的人

如果你使用AppBar，那么更新状态栏颜色就像这样简单:

Scaffold(
  appBar: AppBar(
    // Use [Brightness.light] for black status bar 
    // or [Brightness.dark] for white status bar
    // https://stackoverflow.com/a/58132007/1321917
    brightness: Brightness.light 
  ),
  body: ...
)

申请所有应用程序栏:

return MaterialApp(
  theme: Theme.of(context).copyWith(
    appBarTheme: Theme.of(context)
        .appBarTheme
        .copyWith(brightness: Brightness.light),
  ...
  ),

对于那些不使用AppBar的人

用AnnotatedRegion包装您的内容，并将值设置为SystemUiOverlayStyle。light或SystemUiOverlayStyle.dark:

return AnnotatedRegion<SystemUiOverlayStyle>(
  // Use [SystemUiOverlayStyle.light] for white status bar 
  // or [SystemUiOverlayStyle.dark] for black status bar
  // https://stackoverflow.com/a/58132007/1321917
  value: SystemUiOverlayStyle.light,
  child: Scaffold(...),
);

这招对我很管用:

进口服务

导入的包:颤振/ services.dart ';

然后添加:

@override
  Widget build(BuildContext context) {

    SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
      statusBarColor: Colors.white,
      statusBarBrightness: Brightness.dark,
    ));
    return MaterialApp(home: Scaffold(

如果你想改变整个应用程序的状态颜色，你可以像这样使用primaryColorDark属性:

void main() {
  runApp(
    MaterialApp(
      home: HomeWidget(),
      theme: ThemeData(
        primaryColorDark: Colors.white,
      ),
    ),
  );
}