@override
Widget build(BuildContext context) {
  return Theme(
    data: ThemeData(brightness: Brightness.dark),
    child: Scaffold()
    ....
  )
}

[Android测试] 这就是为什么我能够使状态栏透明，文本颜色深，

import 'package:flutter/services.dart';

void main() {
  SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
    statusBarColor: Colors.transparent, // transparent status bar
    statusBarIconBrightness: Brightness.dark // dark text for status bar
  ));
  runApp(MyApp());
}

你可以这样做，

SystemChrome.setSystemUIOverlayStyle(
      SystemUiOverlayStyle(
        statusBarColor: Colors.grey.withOpacity(0.5),
        statusBarIconBrightness: Brightness.dark,
        statusBarBrightness:
            Platform.isAndroid ? Brightness.dark : Brightness.light,
        systemNavigationBarColor: Colors.white,
        systemNavigationBarDividerColor: Colors.grey,
        systemNavigationBarIconBrightness: Brightness.dark,
      ),
    );

将此代码添加到主程序中。省道构建方法，

@override
Widget build(BuildContext context) {
  return Theme(
    data: ThemeData(brightness: Brightness.dark),
    child: Scaffold()
    ....
  )
}

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()
  }

从Flutter 2.5.0

AppBar中的亮度属性已弃用

我们需要使用systemOverlayStyle属性

例如，如果您正在使用AppBar

AppBar(
      title: Text("Title"),
      systemOverlayStyle: SystemUiOverlayStyle.dark) //for dark color