[Gallery] Implement cupertino navbar demo (#214)

gallery/gallery/lib/codeviewer/code_segments.dart

@@ -9,6 +9,426 @@ import 'package:flutter/material.dart';
 import 'package:gallery/codeviewer/code_style.dart';
 
 class CodeSegments {
+  static TextSpan cupertinoNavigationBarDemo(BuildContext context) {
+    final CodeStyle codeStyle = CodeStyle.of(context);
+    return TextSpan(children: [
+      TextSpan(
+          style: codeStyle.commentStyle,
+          text: '// Copyright 2019 The Flutter team. All rights reserved.'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a'),
+      TextSpan(
+          style: codeStyle.commentStyle,
+          text:
+              '// Use of this source code is governed by a BSD-style license that can be'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a'),
+      TextSpan(
+          style: codeStyle.commentStyle, text: '// found in the LICENSE file.'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a\u000a'),
+      TextSpan(style: codeStyle.keywordStyle, text: 'import'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(
+          style: codeStyle.stringStyle,
+          text: '\u0027package:flutter/cupertino.dart\u0027'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ';'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a'),
+      TextSpan(style: codeStyle.keywordStyle, text: 'import'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(
+          style: codeStyle.stringStyle,
+          text: '\u0027package:flutter/material.dart\u0027'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ';'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a'),
+      TextSpan(style: codeStyle.keywordStyle, text: 'import'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(
+          style: codeStyle.stringStyle,
+          text: '\u0027package:gallery/l10n/gallery_localizations.dart\u0027'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ';'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a\u000a'),
+      TextSpan(style: codeStyle.keywordStyle, text: 'class'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'CupertinoNavigationBarDemo'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'extends'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'StatelessWidget'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '{'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a  '),
+      TextSpan(style: codeStyle.keywordStyle, text: '@override'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a  '),
+      TextSpan(style: codeStyle.classStyle, text: 'Widget'),
+      TextSpan(style: codeStyle.baseStyle, text: ' build'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.classStyle, text: 'BuildContext'),
+      TextSpan(style: codeStyle.baseStyle, text: ' context'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ')'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '{'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a    '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'return'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'Navigator'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: 'onGenerateRoute'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: 'settings'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ')'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '{'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a      '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'return'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(
+          style: codeStyle.classStyle, text: '_NoAnimationCupertinoPageRoute'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a        title'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'GalleryLocalizations'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '.'),
+      TextSpan(style: codeStyle.baseStyle, text: 'of'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: 'context'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ').'),
+      TextSpan(
+          style: codeStyle.baseStyle, text: 'demoCupertinoNavigationBarTitle'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a        builder'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: 'context'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ')'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '=>'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'CupertinoPageScaffold'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a          child'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'CustomScrollView'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a            slivers'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '['),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a              '),
+      TextSpan(
+          style: codeStyle.classStyle, text: 'CupertinoSliverNavigationBar'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(
+          style: codeStyle.baseStyle,
+          text: '\u000a                automaticallyImplyLeading'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'false'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a              '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '),'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a              '),
+      TextSpan(style: codeStyle.classStyle, text: 'SliverPadding'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(
+          style: codeStyle.baseStyle, text: '\u000a                padding'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'MediaQuery'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '.'),
+      TextSpan(style: codeStyle.baseStyle, text: 'of'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: 'context'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ')'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a                    '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '.'),
+      TextSpan(style: codeStyle.baseStyle, text: 'removePadding'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: 'removeTop'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'true'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ')'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a                    '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '.'),
+      TextSpan(style: codeStyle.baseStyle, text: 'padding'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
+      TextSpan(
+          style: codeStyle.baseStyle, text: '\u000a                sliver'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'SliverList'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(
+          style: codeStyle.baseStyle, text: '\u000a                  delegate'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'SliverChildBuilderDelegate'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a                    '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: 'context'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
+      TextSpan(style: codeStyle.baseStyle, text: ' index'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ')'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '{'),
+      TextSpan(
+          style: codeStyle.baseStyle, text: '\u000a                      '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'final'),
+      TextSpan(style: codeStyle.baseStyle, text: ' title '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '='),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'GalleryLocalizations'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '.'),
+      TextSpan(style: codeStyle.baseStyle, text: 'of'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: 'context'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ')'),
+      TextSpan(
+          style: codeStyle.baseStyle, text: '\u000a                          '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '.'),
+      TextSpan(style: codeStyle.baseStyle, text: 'starterAppDrawerItem'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: 'index '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '+'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.numberStyle, text: '1'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ');'),
+      TextSpan(
+          style: codeStyle.baseStyle, text: '\u000a                      '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'return'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'ListTile'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(
+          style: codeStyle.baseStyle,
+          text: '\u000a                        onTap'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '()'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '{'),
+      TextSpan(
+          style: codeStyle.baseStyle, text: '\u000a                          '),
+      TextSpan(style: codeStyle.classStyle, text: 'Navigator'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '.'),
+      TextSpan(style: codeStyle.baseStyle, text: 'of'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: 'context'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ').'),
+      TextSpan(style: codeStyle.baseStyle, text: 'push'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.classStyle, text: 'CupertinoPageRoute'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '<'),
+      TextSpan(style: codeStyle.keywordStyle, text: 'void'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '>('),
+      TextSpan(
+          style: codeStyle.baseStyle,
+          text: '\u000a                            title'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' title'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
+      TextSpan(
+          style: codeStyle.baseStyle,
+          text: '\u000a                            builder'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: 'context'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ')'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '=>'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: '_SecondPage'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '(),'),
+      TextSpan(
+          style: codeStyle.baseStyle, text: '\u000a                          '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '));'),
+      TextSpan(
+          style: codeStyle.baseStyle, text: '\u000a                        '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '},'),
+      TextSpan(
+          style: codeStyle.baseStyle,
+          text: '\u000a                        title'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'Text'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: 'title'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '),'),
+      TextSpan(
+          style: codeStyle.baseStyle, text: '\u000a                      '),
+      TextSpan(style: codeStyle.punctuationStyle, text: ');'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a                    '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '},'),
+      TextSpan(
+          style: codeStyle.baseStyle,
+          text: '\u000a                    childCount'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.numberStyle, text: '20'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a                  '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '),'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a                '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '),'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a              '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '),'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a            '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '],'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a          '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '),'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a        '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '),'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a      '),
+      TextSpan(style: codeStyle.punctuationStyle, text: ');'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a    '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '});'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a  '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '}'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '}'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a\u000a'),
+      TextSpan(style: codeStyle.keywordStyle, text: 'class'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: '_SecondPage'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'extends'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'StatelessWidget'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '{'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a  '),
+      TextSpan(style: codeStyle.keywordStyle, text: '@override'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a  '),
+      TextSpan(style: codeStyle.classStyle, text: 'Widget'),
+      TextSpan(style: codeStyle.baseStyle, text: ' build'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.classStyle, text: 'BuildContext'),
+      TextSpan(style: codeStyle.baseStyle, text: ' context'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ')'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '{'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a    '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'return'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'CupertinoPageScaffold'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a      navigationBar'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'const'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'CupertinoNavigationBar'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '(),'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a      child'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'Container'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '(),'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a    '),
+      TextSpan(style: codeStyle.punctuationStyle, text: ');'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a  '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '}'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '}'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a\u000a'),
+      TextSpan(
+          style: codeStyle.commentStyle,
+          text: '/// A CupertinoPageRoute without any transition animations.'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a'),
+      TextSpan(style: codeStyle.keywordStyle, text: 'class'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(
+          style: codeStyle.classStyle, text: '_NoAnimationCupertinoPageRoute'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '<'),
+      TextSpan(style: codeStyle.classStyle, text: 'T'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '>'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'extends'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'CupertinoPageRoute'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '<'),
+      TextSpan(style: codeStyle.classStyle, text: 'T'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '>'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '{'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a  '),
+      TextSpan(
+          style: codeStyle.classStyle, text: '_NoAnimationCupertinoPageRoute'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '({'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a    '),
+      TextSpan(style: codeStyle.keywordStyle, text: '@required'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.classStyle, text: 'WidgetBuilder'),
+      TextSpan(style: codeStyle.baseStyle, text: ' builder'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a    '),
+      TextSpan(style: codeStyle.classStyle, text: 'String'),
+      TextSpan(style: codeStyle.baseStyle, text: ' title'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a  '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '})'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'super'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: 'builder'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' builder'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
+      TextSpan(style: codeStyle.baseStyle, text: ' title'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' title'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ');'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a\u000a  '),
+      TextSpan(style: codeStyle.keywordStyle, text: '@override'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a  '),
+      TextSpan(style: codeStyle.classStyle, text: 'Widget'),
+      TextSpan(style: codeStyle.baseStyle, text: ' buildTransitions'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a    '),
+      TextSpan(style: codeStyle.classStyle, text: 'BuildContext'),
+      TextSpan(style: codeStyle.baseStyle, text: ' context'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a    '),
+      TextSpan(style: codeStyle.classStyle, text: 'Animation'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '<'),
+      TextSpan(style: codeStyle.keywordStyle, text: 'double'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '>'),
+      TextSpan(style: codeStyle.baseStyle, text: ' animation'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a    '),
+      TextSpan(style: codeStyle.classStyle, text: 'Animation'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '<'),
+      TextSpan(style: codeStyle.keywordStyle, text: 'double'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '>'),
+      TextSpan(style: codeStyle.baseStyle, text: ' secondaryAnimation'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a    '),
+      TextSpan(style: codeStyle.classStyle, text: 'Widget'),
+      TextSpan(style: codeStyle.baseStyle, text: ' child'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a  '),
+      TextSpan(style: codeStyle.punctuationStyle, text: ')'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '{'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a    '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'return'),
+      TextSpan(style: codeStyle.baseStyle, text: ' child'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ';'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a  '),
+      TextSpan(style: codeStyle.punctuationStyle, text: '}'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a'),
+      TextSpan(style: codeStyle.punctuationStyle, text: '}'),
+      TextSpan(style: codeStyle.baseStyle, text: '\u000a\u000a'),
+    ]);
+  }
+
   static TextSpan cupertinoSegmentedControlDemo(BuildContext context) {
     final CodeStyle codeStyle = CodeStyle.of(context);
     return TextSpan(children: [
@@ -881,6 +1301,13 @@ class CodeSegments {
       TextSpan(style: codeStyle.baseStyle, text: ' '),
       TextSpan(style: codeStyle.classStyle, text: 'CupertinoNavigationBar'),
       TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(
+          style: codeStyle.baseStyle,
+          text: '\u000a        automaticallyImplyLeading'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'false'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
       TextSpan(style: codeStyle.baseStyle, text: '\u000a        middle'),
       TextSpan(style: codeStyle.punctuationStyle, text: ':'),
       TextSpan(style: codeStyle.baseStyle, text: ' '),
@@ -1024,6 +1451,13 @@ class CodeSegments {
       TextSpan(style: codeStyle.baseStyle, text: ' '),
       TextSpan(style: codeStyle.classStyle, text: 'CupertinoNavigationBar'),
       TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(
+          style: codeStyle.baseStyle,
+          text: '\u000a        automaticallyImplyLeading'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'false'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
       TextSpan(style: codeStyle.baseStyle, text: '\u000a        middle'),
       TextSpan(style: codeStyle.punctuationStyle, text: ':'),
       TextSpan(style: codeStyle.baseStyle, text: ' '),
@@ -1448,6 +1882,13 @@ class CodeSegments {
       TextSpan(style: codeStyle.baseStyle, text: ' '),
       TextSpan(style: codeStyle.classStyle, text: 'CupertinoNavigationBar'),
       TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(
+          style: codeStyle.baseStyle,
+          text: '\u000a        automaticallyImplyLeading'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'false'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
       TextSpan(style: codeStyle.baseStyle, text: '\u000a        middle'),
       TextSpan(style: codeStyle.punctuationStyle, text: ':'),
       TextSpan(style: codeStyle.baseStyle, text: ' '),
@@ -10395,6 +10836,13 @@ class CodeSegments {
       TextSpan(style: codeStyle.baseStyle, text: ' '),
       TextSpan(style: codeStyle.classStyle, text: 'AppBar'),
       TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(
+          style: codeStyle.baseStyle,
+          text: '\u000a        automaticallyImplyLeading'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'false'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
       TextSpan(style: codeStyle.baseStyle, text: '\u000a        title'),
       TextSpan(style: codeStyle.punctuationStyle, text: ':'),
       TextSpan(style: codeStyle.baseStyle, text: ' '),
@@ -14477,6 +14925,13 @@ class CodeSegments {
       TextSpan(style: codeStyle.baseStyle, text: ' '),
       TextSpan(style: codeStyle.classStyle, text: 'AppBar'),
       TextSpan(style: codeStyle.punctuationStyle, text: '('),
+      TextSpan(
+          style: codeStyle.baseStyle,
+          text: '\u000a        automaticallyImplyLeading'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ':'),
+      TextSpan(style: codeStyle.baseStyle, text: ' '),
+      TextSpan(style: codeStyle.keywordStyle, text: 'false'),
+      TextSpan(style: codeStyle.punctuationStyle, text: ','),
       TextSpan(style: codeStyle.baseStyle, text: '\u000a        title'),
       TextSpan(style: codeStyle.punctuationStyle, text: ':'),
       TextSpan(style: codeStyle.baseStyle, text: ' '),

gallery/gallery/lib/data/demos.dart

@@ -11,6 +11,7 @@ import 'package:gallery/data/icons.dart';
 import 'package:gallery/demos/cupertino/cupertino_activity_indicator_demo.dart';
 import 'package:gallery/demos/cupertino/cupertino_alert_demo.dart';
 import 'package:gallery/demos/cupertino/cupertino_button_demo.dart';
+import 'package:gallery/demos/cupertino/cupertino_navigation_bar_demo.dart';
 import 'package:gallery/demos/cupertino/cupertino_segmented_control_demo.dart';
 import 'package:gallery/demos/cupertino/cupertino_slider_demo.dart';
 import 'package:gallery/demos/cupertino/cupertino_switch_demo.dart';
@@ -480,22 +481,6 @@ List<GalleryDemo> cupertinoDemos(BuildContext context) {
         ),
       ],
     ),
-    GalleryDemo(
-      title: GalleryLocalizations.of(context).demoCupertinoButtonsTitle,
-      icon: GalleryIcons.genericButtons,
-      subtitle: GalleryLocalizations.of(context).demoCupertinoButtonsSubtitle,
-      configurations: [
-        GalleryDemoConfiguration(
-          title: GalleryLocalizations.of(context).demoCupertinoButtonsTitle,
-          description:
-              GalleryLocalizations.of(context).demoCupertinoButtonsDescription,
-          documentationUrl:
-              'https://api.flutter.dev/flutter/cupertino/CupertinoButton-class.html',
-          buildRoute: (_) => CupertinoButtonDemo(),
-          code: CodeSegments.cupertinoButtonDemo,
-        ),
-      ],
-    ),
     GalleryDemo(
       title: GalleryLocalizations.of(context).demoCupertinoAlertsTitle,
       icon: GalleryIcons.dialogs,
@@ -554,6 +539,40 @@ List<GalleryDemo> cupertinoDemos(BuildContext context) {
         ),
       ],
     ),
+    GalleryDemo(
+      title: GalleryLocalizations.of(context).demoCupertinoButtonsTitle,
+      icon: GalleryIcons.genericButtons,
+      subtitle: GalleryLocalizations.of(context).demoCupertinoButtonsSubtitle,
+      configurations: [
+        GalleryDemoConfiguration(
+          title: GalleryLocalizations.of(context).demoCupertinoButtonsTitle,
+          description:
+              GalleryLocalizations.of(context).demoCupertinoButtonsDescription,
+          documentationUrl:
+              'https://api.flutter.dev/flutter/cupertino/CupertinoButton-class.html',
+          buildRoute: (_) => CupertinoButtonDemo(),
+          code: CodeSegments.cupertinoButtonDemo,
+        ),
+      ],
+    ),
+    GalleryDemo(
+      title: GalleryLocalizations.of(context).demoCupertinoNavigationBarTitle,
+      icon: GalleryIcons.bottomSheetPersistent,
+      subtitle:
+          GalleryLocalizations.of(context).demoCupertinoNavigationBarSubtitle,
+      configurations: [
+        GalleryDemoConfiguration(
+          title:
+              GalleryLocalizations.of(context).demoCupertinoNavigationBarTitle,
+          description: GalleryLocalizations.of(context)
+              .demoCupertinoNavigationBarDescription,
+          documentationUrl:
+              'https://api.flutter.dev/flutter/cupertino/CupertinoNavigationBar-class.html',
+          buildRoute: (_) => CupertinoNavigationBarDemo(),
+          code: CodeSegments.cupertinoNavigationBarDemo,
+        ),
+      ],
+    ),
     GalleryDemo(
       title:
           GalleryLocalizations.of(context).demoCupertinoSegmentedControlTitle,

gallery/gallery/lib/demos/cupertino/cupertino_navigation_bar_demo.dart

@@ -0,0 +1,82 @@
+// Copyright 2019 The Flutter team. 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';
+import 'package:flutter/material.dart';
+import 'package:gallery/l10n/gallery_localizations.dart';
+
+// BEGIN cupertinoNavigationBarDemo
+
+class CupertinoNavigationBarDemo extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return Navigator(onGenerateRoute: (settings) {
+      return _NoAnimationCupertinoPageRoute<void>(
+        title: GalleryLocalizations.of(context).demoCupertinoNavigationBarTitle,
+        builder: (context) => CupertinoPageScaffold(
+          child: CustomScrollView(
+            slivers: [
+              CupertinoSliverNavigationBar(
+                automaticallyImplyLeading: false,
+              ),
+              SliverPadding(
+                padding: MediaQuery.of(context)
+                    .removePadding(removeTop: true)
+                    .padding,
+                sliver: SliverList(
+                  delegate: SliverChildBuilderDelegate(
+                    (context, index) {
+                      final title = GalleryLocalizations.of(context)
+                          .starterAppDrawerItem(index + 1);
+                      return ListTile(
+                        onTap: () {
+                          Navigator.of(context).push(CupertinoPageRoute<void>(
+                            title: title,
+                            builder: (context) => _SecondPage(),
+                          ));
+                        },
+                        title: Text(title),
+                      );
+                    },
+                    childCount: 20,
+                  ),
+                ),
+              ),
+            ],
+          ),
+        ),
+      );
+    });
+  }
+}
+
+class _SecondPage extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return CupertinoPageScaffold(
+      navigationBar: const CupertinoNavigationBar(),
+      child: Container(),
+    );
+  }
+}
+
+/// A CupertinoPageRoute without any transition animations.
+class _NoAnimationCupertinoPageRoute<T> extends CupertinoPageRoute<T> {
+  _NoAnimationCupertinoPageRoute({
+    @required WidgetBuilder builder,
+    String title,
+  }) : super(builder: builder, title: title);
+
+  @override
+  Widget buildTransitions(
+    BuildContext context,
+    Animation<double> animation,
+    Animation<double> secondaryAnimation,
+    Widget child,
+  ) {
+    return child;
+  }
+}
+
+// END

gallery/gallery/lib/l10n/gallery_localizations.dart

@@ -1645,6 +1645,28 @@ class GalleryLocalizations {
         desc: r'Title for the cupertino buttons component demo.');
   }
 
+  String get demoCupertinoNavigationBarDescription {
+    return Intl.message(
+        r'An iOS-styled navigation bar. The navigation bar is a toolbar that minimally consists of a page title, in the middle of the toolbar.',
+        locale: _localeName,
+        name: 'demoCupertinoNavigationBarDescription',
+        desc: r'Description for the cupertino navigation bar component demo.');
+  }
+
+  String get demoCupertinoNavigationBarSubtitle {
+    return Intl.message(r'iOS-style navigation bar',
+        locale: _localeName,
+        name: 'demoCupertinoNavigationBarSubtitle',
+        desc: r'Subtitle for the cupertino navigation bar component demo.');
+  }
+
+  String get demoCupertinoNavigationBarTitle {
+    return Intl.message(r'Navigation Bar',
+        locale: _localeName,
+        name: 'demoCupertinoNavigationBarTitle',
+        desc: r'Title for the cupertino navigation bar component demo.');
+  }
+
   String get demoCupertinoSegmentedControlDescription {
     return Intl.message(
         r'Used to select between a number of mutually exclusive options. When one option in the segmented control is selected, the other options in the segmented control cease to be selected.',

gallery/gallery/lib/l10n/intl_en_US.arb

@@ -733,6 +733,18 @@
   "@demoCupertinoActionSheetDescription": {
     "description": "Description for the cupertino action sheet component demo."
   },
+  "demoCupertinoNavigationBarTitle": "Navigation Bar",
+  "@demoCupertinoNavigationBarTitle": {
+    "description": "Title for the cupertino navigation bar component demo."
+  },
+  "demoCupertinoNavigationBarSubtitle": "iOS-style navigation bar",
+  "@demoCupertinoNavigationBarSubtitle": {
+    "description": "Subtitle for the cupertino navigation bar component demo."
+  },
+  "demoCupertinoNavigationBarDescription": "An iOS-styled navigation bar. The navigation bar is a toolbar that minimally consists of a page title, in the middle of the toolbar.",
+  "@demoCupertinoNavigationBarDescription": {
+    "description": "Description for the cupertino navigation bar component demo."
+  },
   "demoCupertinoSegmentedControlTitle": "Segmented Control",
   "@demoCupertinoSegmentedControlTitle": {
     "description": "Title for the cupertino segmented control component demo."

gallery/gallery/lib/l10n/intl_en_US.xml

@@ -697,6 +697,18 @@
     name="demoCupertinoActionSheetDescription"
     description="Description for the cupertino action sheet component demo."
     >An action sheet is a specific style of alert that presents the user with a set of two or more choices related to the current context. An action sheet can have a title, an additional message, and a list of actions.</string>
+  <string
+    name="demoCupertinoNavigationBarTitle"
+    description="Title for the cupertino navigation bar component demo."
+    >Navigation Bar</string>
+  <string
+    name="demoCupertinoNavigationBarSubtitle"
+    description="Subtitle for the cupertino navigation bar component demo."
+    >iOS-style navigation bar</string>
+  <string
+    name="demoCupertinoNavigationBarDescription"
+    description="Description for the cupertino navigation bar component demo."
+    >An iOS-styled navigation bar. The navigation bar is a toolbar that minimally consists of a page title, in the middle of the toolbar.</string>
   <string
     name="demoCupertinoSegmentedControlTitle"
     description="Title for the cupertino segmented control component demo."

gallery/gallery/lib/l10n/messages_en_US.dart

@@ -427,6 +427,13 @@ class MessageLookup extends MessageLookupByLibrary {
             MessageLookupByLibrary.simpleMessage("iOS-style buttons"),
         "demoCupertinoButtonsTitle":
             MessageLookupByLibrary.simpleMessage("Buttons"),
+        "demoCupertinoNavigationBarDescription":
+            MessageLookupByLibrary.simpleMessage(
+                "An iOS-styled navigation bar. The navigation bar is a toolbar that minimally consists of a page title, in the middle of the toolbar."),
+        "demoCupertinoNavigationBarSubtitle":
+            MessageLookupByLibrary.simpleMessage("iOS-style navigation bar"),
+        "demoCupertinoNavigationBarTitle":
+            MessageLookupByLibrary.simpleMessage("Navigation Bar"),
         "demoCupertinoSegmentedControlDescription":
             MessageLookupByLibrary.simpleMessage(
                 "Used to select between a number of mutually exclusive options. When one option in the segmented control is selected, the other options in the segmented control cease to be selected."),