为什么标题栏总是有一块空白区域
全部代码:
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
class DocumentPage extends StatefulWidget {
const DocumentPage({Key? key}) : super(key: key);
@override
_DocumentPageState createState() => _DocumentPageState();
}
class _DocumentPageState extends State<DocumentPage> with SingleTickerProviderStateMixin {
late TabController _tabController;
@override
void initState() {
super.initState();
_tabController = TabController(length: 3, vsync: this);
SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
statusBarColor: Colors.transparent,
statusBarIconBrightness: Brightness.dark,
));
}
@override
Widget build(BuildContext context) {
return Scaffold(
extendBodyBehindAppBar: true,
appBar: AppBar(
backgroundColor: Colors.transparent,
elevation: 0,
title: const Text('文档', style: TextStyle(color: Colors.black)),
bottom: TabBar(
controller: _tabController,
tabs: const [
Tab(text: 'Tab 1'),
Tab(text: 'Tab 2'),
Tab(text: 'Tab 3'),
],
),
),
body: TabBarView(
controller: _tabController,
children: const [
Center(child: Text('内容1')),
Center(child: Text('内容2')),
Center(child: Text('内容3')),
],
),
);
}
@override
void dispose() {
_tabController.dispose();
super.dispose();
}
}