293ae2e5ab
Fixes [Support search box inside large title nav bar](https://github.com/flutter/flutter/issues/18103) Part of [Support segmented controls in nav bars and double row nav bars](https://github.com/flutter/flutter/issues/10469) ## None mode (Current default) https://github.com/user-attachments/assets/d798314e-940f-4311-9a9a-fe999c65f280 ## Always mode https://github.com/user-attachments/assets/950a85aa-8ca2-42ea-bf8b-3cb8f95e616e ## Automatic mode https://github.com/user-attachments/assets/c7c7240b-d493-4036-a987-30f61d02bac3 ## With CupertinoSlidingSegmentedControl https://github.com/user-attachments/assets/59f4aec4-8d9c-4223-915b-97b73cb25dc8 <details> <summary>Sample Code</summary> ```dart // Copyright 2014 The Flutter Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. import 'package:flutter/cupertino.dart'; /// Flutter code sample for [CupertinoSliverNavigationBar]. void main() => runApp(const SliverNavBarApp()); class SliverNavBarApp extends StatelessWidget { const SliverNavBarApp({super.key}); @override Widget build(BuildContext context) { return const CupertinoApp( theme: CupertinoThemeData(brightness: Brightness.light), home: SliverNavBarExample(), ); } } class SliverNavBarExample extends StatelessWidget { const SliverNavBarExample({super.key}); @override Widget build(BuildContext context) { return const CupertinoPageScaffold( // A ScrollView that creates custom scroll effects using slivers. child: SafeArea( child: CustomScrollView( // A list of sliver widgets. slivers: <Widget>[ CupertinoSliverNavigationBar( leading: SizedBox( width: 100, child: Row( children: [ Icon(CupertinoIcons.back), Text( 'Lists', style: TextStyle(color: CupertinoColors.activeBlue), ), ], ), ), trailing: Icon(CupertinoIcons.plus), largeTitle: Text('iPhone'), // Change to desired mode. drawerMode: NavigationDrawerMode.none, drawer: Padding( padding: EdgeInsets.fromLTRB(8.0, 0.0, 8.0, 16.0), child: CupertinoSearchTextField(), ), ), SliverFillRemaining( child: Column( mainAxisAlignment: MainAxisAlignment.spaceEvenly, children: <Widget>[ Text('Drag me up', textAlign: TextAlign.center), ], ), ), ], ), ), ); } } ``` </details>
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