我怎樣才能在 appBar 中的動作后面制作標簽？像這樣！照片
，我的代碼看起來像這樣，我試圖把標簽放在 leading
Widget build(BuildContext context) {
return DefaultTabController(
length: 2,
child: Scaffold(
appBar: AppBar(
automaticallyImplyLeading: false,
actions: [
IconButton(onPressed: () {}, icon: Icon(Icons.home)),
IconButton(onPressed: () {}, icon: Icon(Icons.search)),
IconButton(onPressed: () {}, icon: Icon(Icons.archive)),
],
leadingWidth: double.maxFinite,
leading: TabBar(
indicatorSize: TabBarIndicatorSize.tab,
tabs: [
Tab(text: "Pending"),
Tab(text: "Delivered"),
],
),
),
body: TabBarView(
children: [
Tab(text: "Pending"),
Tab(text: "Delivered"),
],
),
),
);
}
}
這是輸出的樣子 => 
uj5u.com熱心網友回復：
如果您將選項卡放在標題而不是前導中會怎樣：
Widget build(BuildContext context) {
return DefaultTabController(
length: 2,
child: Scaffold(
appBar: AppBar(
automaticallyImplyLeading: false,
actions: [
IconButton(onPressed: () {}, icon: Icon(Icons.home)),
IconButton(onPressed: () {}, icon: Icon(Icons.search)),
IconButton(onPressed: () {}, icon: Icon(Icons.archive)),
],
title: TabBar(
indicatorSize: TabBarIndicatorSize.tab,
tabs: [
Tab(text: "Pending"),
Tab(text: "Delivered"),
],
),
),
body: TabBarView(
children: [
Tab(text: "Pending"),
Tab(text: "Delivered"),
],
),
),
);
}
}
uj5u.com熱心網友回復：
您可以添加 carousel_slider 依賴項。要獲得它，您可以訪問pub.dev并搜索 carousel_slider 或這里的鏈接 https://pub.dev/packages/carousel_slider。我希望這有幫助 ）
//example image
final List<String> imgList = [
'https://images.unsplash.com/photo-1520342868574-5fa3804e551c?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=6ff92caffcdd63681a35134a6770ed3b&auto=format&fit=crop&w=1951&q=80',
'https://images.unsplash.com/photo-1522205408450-add114ad53fe?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=368f45b0888aeb0b7b08e3a1084d3ede&auto=format&fit=crop&w=1950&q=80',
'https://images.unsplash.com/photo-1519125323398-675f0ddb6308?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=94a1e718d89ca60a6337a6008341ca50&auto=format&fit=crop&w=1950&q=80',
'https://images.unsplash.com/photo-1523205771623-e0faa4d2813d?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=89719a0d55dd05e2deae4120227e6efc&auto=format&fit=crop&w=1953&q=80',
'https://images.unsplash.com/photo-1508704019882-f9cf40e475b4?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=8c6e5e3aba713b17aa1fe71ab4f0ae5b&auto=format&fit=crop&w=1352&q=80',
'https://images.unsplash.com/photo-1519985176271-adb1088fa94c?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=a0c8d632e977f94e5d312d9893258f59&auto=format&fit=crop&w=1355&q=80'
];
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHome(),
);
}
}
class MyHome extends StatefulWidget {
const MyHome({Key? key}) : super(key: key);
@override
State<MyHome> createState() => _MyHomeState();
}
class _MyHomeState extends State<MyHome> {
final List<Widget> imageSliders = imgList
.map((item) => Container(
child: Container(
margin: EdgeInsets.all(5.0),
child: ClipRRect(
borderRadius: BorderRadius.all(Radius.circular(5.0)),
child: Stack(
children: <Widget>[
Image.network(item, fit: BoxFit.cover, width: 1000.0),
Positioned(
bottom: 0.0,
left: 0.0,
right: 0.0,
child: Container(
decoration: BoxDecoration(
gradient: LinearGradient(
colors: [
Color.fromARGB(200, 0, 0, 0),
Color.fromARGB(0, 0, 0, 0)
],
begin: Alignment.bottomCenter,
end: Alignment.topCenter,
),
),
padding: EdgeInsets.symmetric(
vertical: 10.0, horizontal: 20.0),
// child: Text(
// 'No. ${imgList.indexOf(item)} image',
// style: TextStyle(
// color: Colors.white,
// fontSize: 20.0,
// fontWeight: FontWeight.bold,
// ),
// ),
),
),
],
)),
),
))
.toList();
@override
Widget build(BuildContext context) {
int _current = 0;
final CarouselController _controller = CarouselController();
return DefaultTabController(
length: 2,
child: Scaffold(
appBar: AppBar(
automaticallyImplyLeading: false,
actions: [
IconButton(onPressed: () {}, icon: Icon(Icons.home)),
IconButton(onPressed: () {}, icon: Icon(Icons.search)),
IconButton(onPressed: () {}, icon: Icon(Icons.archive)),
],
leadingWidth: double.maxFinite,
leading: TabBar(
indicatorSize: TabBarIndicatorSize.tab,
tabs: [
Tab(text: "Pending"),
Tab(text: "Delivered"),
],
),
),
body:Container(
child: Column(
mainAxisAlignment:MainAxisAlignment.start,
children: [
CarouselSlider(
items: imageSliders,
carouselController: _controller,
options: CarouselOptions(
height: 200,
scrollDirection: Axis.horizontal,
autoPlay: true,
enlargeCenterPage: true,
aspectRatio: 2.0,
viewportFraction: 1,
onPageChanged: (index, reason) {
setState(() {
_current = index;
});
}),
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: imgList.asMap().entries.map((entry) {
return GestureDetector(
onTap: () => _controller.animateToPage(entry.key),
child: Container(
width: 12.0,
height: 12.0,
margin: EdgeInsets.symmetric(vertical: 1.0, horizontal: 4.0),
decoration: BoxDecoration(
shape: BoxShape.circle,
color: (Theme.of(context).brightness == Brightness.dark
? Colors.white
: Colors.black)
.withOpacity(_current == entry.key ? 0.9 : 0.4)),
),
);
}).toList(),
),
]),
),
),
);
}
}
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