TabController
snippet.packages.flutter.lib.src.material.tab_controller.12.
// ignore_for_file: directives_ordering
// ignore_for_file: unnecessary_import
// ignore_for_file: unused_import
// ignore_for_file: unused_element
// ignore_for_file: unused_local_variable
import 'dart:async';
import 'dart:convert';
import 'dart:math' as math;
import 'dart:typed_data';
import 'dart:ui' as ui;
import 'package:flutter_test/flutter_test.dart';
import 'package:flutter/material.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter/painting.dart';
import 'package:flutter/physics.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/semantics.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/scheduler.dart';
import 'package:flutter/animation.dart';
import 'package:flutter/services.dart';
// From: packages/flutter/lib/src/material/tab_controller.dart:12
late BuildContext context;
class MyTabbedPage extends StatefulWidget {
const MyTabbedPage({ Key? key }) : super(key: key);
@override
State createState() => _MyTabbedPageState();
}
class _MyTabbedPageState extends State with SingleTickerProviderStateMixin {
static const List myTabs = [
Tab(text: 'LEFT'),
Tab(text: 'RIGHT'),
];
late TabController _tabController;
@override
void initState() {
super.initState();
_tabController = TabController(vsync: this, length: myTabs.length);
}
@override
void dispose() {
_tabController.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
bottom: TabBar(
controller: _tabController,
tabs: myTabs,
),
),
body: TabBarView(
controller: _tabController,
children: myTabs.map((Tab tab) {
final String label = tab.text!.toLowerCase();
return Center(
child: Text(
'This is the $label tab',
style: const TextStyle(fontSize: 36),
),
);
}).toList(),
),
);
}
}
TabController controller = DefaultTabController.of(context)!;
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