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codelab_rebuild.yaml
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name: WebView in FLutter script
steps:
- name: step_03
steps:
- name: Remove generated code
rmdir: step_03
- name: Create project
flutter: create webview_in_flutter --platforms=android,ios
- name: Strip DEVELOPMENT_TEAM
strip-lines-containing: DEVELOPMENT_TEAM =
path: webview_in_flutter/ios/Runner.xcodeproj/project.pbxproj
- name: Upgrade dependencies
path: webview_in_flutter
flutter: pub upgrade --major-versions
- name: Configure analysis_options.yaml
path: webview_in_flutter/analysis_options.yaml
replace-contents: |
include: ../../analysis_options.yaml
- name: Remove README
rm: webview_in_flutter/README.md
- name: Add .vscode directory
mkdir: webview_in_flutter/.vscode
- name: Add .vscode/launch.json
path: webview_in_flutter/.vscode/launch.json
replace-contents: |
{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"name": "webview_in_flutter",
"request": "launch",
"type": "dart"
}
]
}
- name: Dart fix
path: webview_in_flutter
dart: fix --apply
- name: Add webview_flutter
path: webview_in_flutter
flutter: pub add webview_flutter
- name: Patch android/app/build.gradle.kts
path: webview_in_flutter/android/app/build.gradle.kts
patch-u: |
--- b/webview_flutter/step_03/android/app/build.gradle
+++ a/webview_flutter/step_03/android/app/build.gradle
@@ -24,7 +24,7 @@ android {
applicationId = "com.example.webview_in_flutter"
// You can update the following values to match your application needs.
// For more information, see: https://flutter.dev/to/review-gradle-config.
- minSdk = flutter.minSdkVersion
+ minSdk = 21
targetSdk = flutter.targetSdkVersion
versionCode = flutter.versionCode
versionName = flutter.versionName
- name: Build iOS
platforms: [ macos ]
path: webview_in_flutter
flutter: build ios --simulator
- name: Build Android
platforms: [ macos ]
path: webview_in_flutter
flutter: build apk
- name: Copy step_03
copydir:
from: webview_in_flutter
to: step_03
- name: step_04
steps:
- name: Remove generated code
rmdir: step_04
- name: Replace lib/main.dart
path: webview_in_flutter/lib/main.dart
replace-contents: |
// Copyright 2022 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/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
void main() {
runApp(MaterialApp(theme: ThemeData(), home: const WebViewApp()));
}
class WebViewApp extends StatefulWidget {
const WebViewApp({super.key});
@override
State<WebViewApp> createState() => _WebViewAppState();
}
class _WebViewAppState extends State<WebViewApp> {
late final WebViewController controller;
@override
void initState() {
super.initState();
controller =
WebViewController()..loadRequest(Uri.parse('https://flutter.dev'));
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: const Text('Flutter WebView')),
body: WebViewWidget(controller: controller),
);
}
}
- name: Delete test/widget_test.dart
rmdir: webview_in_flutter/test
- name: Copy step_04
copydir:
from: webview_in_flutter
to: step_04
- name: step_05
steps:
- name: Remove generated code
rmdir: step_05
- name: Make lib/src
path: webview_in_flutter
mkdir: lib/src
- name: Create lib/src/web_view_stack.dart
path: webview_in_flutter/lib/src/web_view_stack.dart
replace-contents: |
// Copyright 2022 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/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
class WebViewStack extends StatefulWidget {
const WebViewStack({super.key});
@override
State<WebViewStack> createState() => _WebViewStackState();
}
class _WebViewStackState extends State<WebViewStack> {
var loadingPercentage = 0;
late final WebViewController controller;
@override
void initState() {
super.initState();
controller =
WebViewController()
..setNavigationDelegate(
NavigationDelegate(
onPageStarted: (url) {
setState(() {
loadingPercentage = 0;
});
},
onProgress: (progress) {
setState(() {
loadingPercentage = progress;
});
},
onPageFinished: (url) {
setState(() {
loadingPercentage = 100;
});
},
),
)
..loadRequest(Uri.parse('https://flutter.dev'));
}
@override
Widget build(BuildContext context) {
return Stack(
children: [
WebViewWidget(controller: controller),
if (loadingPercentage < 100)
LinearProgressIndicator(value: loadingPercentage / 100.0),
],
);
}
}
- name: Patch lib/main.dart
path: webview_in_flutter/lib/main.dart
patch-u: |
--- b/webview_flutter/step_05/lib/main.dart
+++ a/webview_flutter/step_05/lib/main.dart
@@ -3,7 +3,8 @@
// found in the LICENSE file.
import 'package:flutter/material.dart';
-import 'package:webview_flutter/webview_flutter.dart';
+
+import 'src/web_view_stack.dart';
void main() {
runApp(MaterialApp(theme: ThemeData(), home: const WebViewApp()));
@@ -17,20 +18,11 @@ class WebViewApp extends StatefulWidget {
}
class _WebViewAppState extends State<WebViewApp> {
- late final WebViewController controller;
-
- @override
- void initState() {
- super.initState();
- controller =
- WebViewController()..loadRequest(Uri.parse('https://flutter.dev'));
- }
-
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: const Text('Flutter WebView')),
- body: WebViewWidget(controller: controller),
+ body: const WebViewStack(),
);
}
}
- name: Copy step_05
copydir:
from: webview_in_flutter
to: step_05
- name: step_06
steps:
- name: Remove step_06
rmdir: step_06
- name: Create lib/src/navigation_controls.dart
path: webview_in_flutter/lib/src/navigation_controls.dart
replace-contents: |
// Copyright 2022 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/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
class NavigationControls extends StatelessWidget {
const NavigationControls({required this.controller, super.key});
final WebViewController controller;
@override
Widget build(BuildContext context) {
return Row(
children: <Widget>[
IconButton(
icon: const Icon(Icons.arrow_back_ios),
onPressed: () async {
final messenger = ScaffoldMessenger.of(context);
if (await controller.canGoBack()) {
await controller.goBack();
} else {
messenger.showSnackBar(
const SnackBar(content: Text('No back history item')),
);
return;
}
},
),
IconButton(
icon: const Icon(Icons.arrow_forward_ios),
onPressed: () async {
final messenger = ScaffoldMessenger.of(context);
if (await controller.canGoForward()) {
await controller.goForward();
} else {
messenger.showSnackBar(
const SnackBar(content: Text('No forward history item')),
);
return;
}
},
),
IconButton(
icon: const Icon(Icons.replay),
onPressed: () {
controller.reload();
},
),
],
);
}
}
- name: Patch lib/main.dart
path: webview_in_flutter/lib/main.dart
patch-u: |
--- b/webview_flutter/step_06/lib/main.dart
+++ a/webview_flutter/step_06/lib/main.dart
@@ -3,7 +3,9 @@
// found in the LICENSE file.
import 'package:flutter/material.dart';
+import 'package:webview_flutter/webview_flutter.dart';
+import 'src/navigation_controls.dart';
import 'src/web_view_stack.dart';
void main() {
@@ -18,11 +20,23 @@ class WebViewApp extends StatefulWidget {
}
class _WebViewAppState extends State<WebViewApp> {
+ late final WebViewController controller;
+
+ @override
+ void initState() {
+ super.initState();
+ controller =
+ WebViewController()..loadRequest(Uri.parse('https://flutter.dev'));
+ }
+
@override
Widget build(BuildContext context) {
return Scaffold(
- appBar: AppBar(title: const Text('Flutter WebView')),
- body: const WebViewStack(),
+ appBar: AppBar(
+ title: const Text('Flutter WebView'),
+ actions: [NavigationControls(controller: controller)],
+ ),
+ body: WebViewStack(controller: controller),
);
}
}
- name: Patch lib/src/web_view_stack.dart
path: webview_in_flutter/lib/src/web_view_stack.dart
patch-u: |
--- b/webview_flutter/step_06/lib/src/web_view_stack.dart
+++ a/webview_flutter/step_06/lib/src/web_view_stack.dart
@@ -6,7 +6,9 @@ import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
class WebViewStack extends StatefulWidget {
- const WebViewStack({super.key});
+ const WebViewStack({required this.controller, super.key});
+
+ final WebViewController controller;
@override
State<WebViewStack> createState() => _WebViewStackState();
@@ -14,40 +16,36 @@ class WebViewStack extends StatefulWidget {
class _WebViewStackState extends State<WebViewStack> {
var loadingPercentage = 0;
- late final WebViewController controller;
@override
void initState() {
super.initState();
- controller =
- WebViewController()
- ..setNavigationDelegate(
- NavigationDelegate(
- onPageStarted: (url) {
- setState(() {
- loadingPercentage = 0;
- });
- },
- onProgress: (progress) {
- setState(() {
- loadingPercentage = progress;
- });
- },
- onPageFinished: (url) {
- setState(() {
- loadingPercentage = 100;
- });
- },
- ),
- )
- ..loadRequest(Uri.parse('https://flutter.dev'));
+ widget.controller.setNavigationDelegate(
+ NavigationDelegate(
+ onPageStarted: (url) {
+ setState(() {
+ loadingPercentage = 0;
+ });
+ },
+ onProgress: (progress) {
+ setState(() {
+ loadingPercentage = progress;
+ });
+ },
+ onPageFinished: (url) {
+ setState(() {
+ loadingPercentage = 100;
+ });
+ },
+ ),
+ );
}
@override
Widget build(BuildContext context) {
return Stack(
children: [
- WebViewWidget(controller: controller),
+ WebViewWidget(controller: widget.controller),
if (loadingPercentage < 100)
LinearProgressIndicator(value: loadingPercentage / 100.0),
],
- name: Copy step_06
copydir:
from: webview_in_flutter
to: step_06
- name: step_07
steps:
- name: Remove step_07
rmdir: step_07
- name: Patch lib/src/web_view_stack.dart
path: webview_in_flutter/lib/src/web_view_stack.dart
patch-u: |
--- b/webview_flutter/step_07/lib/src/web_view_stack.dart
+++ a/webview_flutter/step_07/lib/src/web_view_stack.dart
@@ -37,6 +37,16 @@ class _WebViewStackState extends State<WebViewStack> {
loadingPercentage = 100;
});
},
+ onNavigationRequest: (navigation) {
+ final host = Uri.parse(navigation.url).host;
+ if (host.contains('youtube.com')) {
+ ScaffoldMessenger.of(context).showSnackBar(
+ SnackBar(content: Text('Blocking navigation to $host')),
+ );
+ return NavigationDecision.prevent;
+ }
+ return NavigationDecision.navigate;
+ },
),
);
}
- name: Copy step_07
copydir:
from: webview_in_flutter
to: step_07
- name: step_08
steps:
- name: Remove step_08
rmdir: step_08
- name: Add lib/src/menu.dart
path: webview_in_flutter/lib/src/menu.dart
replace-contents: |
// Copyright 2022 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/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
enum _MenuOptions { navigationDelegate }
class Menu extends StatelessWidget {
const Menu({required this.controller, super.key});
final WebViewController controller;
@override
Widget build(BuildContext context) {
return PopupMenuButton<_MenuOptions>(
onSelected: (value) async {
switch (value) {
case _MenuOptions.navigationDelegate:
await controller.loadRequest(Uri.parse('https://youtube.com'));
}
},
itemBuilder:
(context) => [
const PopupMenuItem<_MenuOptions>(
value: _MenuOptions.navigationDelegate,
child: Text('Navigate to YouTube'),
),
],
);
}
}
- name: Patch lib/main.dart
path: webview_in_flutter/lib/main.dart
patch-u: |
--- b/webview_flutter/step_08/lib/main.dart
+++ a/webview_flutter/step_08/lib/main.dart
@@ -5,6 +5,7 @@
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
+import 'src/menu.dart';
import 'src/navigation_controls.dart';
import 'src/web_view_stack.dart';
@@ -34,7 +35,10 @@ class _WebViewAppState extends State<WebViewApp> {
return Scaffold(
appBar: AppBar(
title: const Text('Flutter WebView'),
- actions: [NavigationControls(controller: controller)],
+ actions: [
+ NavigationControls(controller: controller),
+ Menu(controller: controller),
+ ],
),
body: WebViewStack(controller: controller),
);
- name: Copy step_08
copydir:
from: webview_in_flutter
to: step_08
- name: step_09
steps:
- name: Remove step_09
rmdir: step_09
- name: Patch lib/src/menu.dart
path: webview_in_flutter/lib/src/menu.dart
patch-u: |
--- b/webview_flutter/step_09/lib/src/menu.dart
+++ a/webview_flutter/step_09/lib/src/menu.dart
@@ -5,20 +5,34 @@
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
-enum _MenuOptions { navigationDelegate }
+enum _MenuOptions { navigationDelegate, userAgent }
-class Menu extends StatelessWidget {
+class Menu extends StatefulWidget {
const Menu({required this.controller, super.key});
final WebViewController controller;
+ @override
+ State<Menu> createState() => _MenuState();
+}
+
+class _MenuState extends State<Menu> {
@override
Widget build(BuildContext context) {
return PopupMenuButton<_MenuOptions>(
onSelected: (value) async {
switch (value) {
case _MenuOptions.navigationDelegate:
- await controller.loadRequest(Uri.parse('https://youtube.com'));
+ await widget.controller.loadRequest(
+ Uri.parse('https://youtube.com'),
+ );
+ case _MenuOptions.userAgent:
+ final userAgent = await widget.controller
+ .runJavaScriptReturningResult('navigator.userAgent');
+ if (!context.mounted) return;
+ ScaffoldMessenger.of(
+ context,
+ ).showSnackBar(SnackBar(content: Text('$userAgent')));
}
},
itemBuilder:
@@ -27,6 +41,10 @@ class Menu extends StatelessWidget {
value: _MenuOptions.navigationDelegate,
child: Text('Navigate to YouTube'),
),
+ const PopupMenuItem<_MenuOptions>(
+ value: _MenuOptions.userAgent,
+ child: Text('Show user-agent'),
+ ),
],
);
}
- name: Patch lib/src/web_view_stack.dart
path: webview_in_flutter/lib/src/web_view_stack.dart
patch-u: |
--- b/webview_flutter/step_09/lib/src/web_view_stack.dart
+++ a/webview_flutter/step_09/lib/src/web_view_stack.dart
@@ -20,35 +20,37 @@ class _WebViewStackState extends State<WebViewStack> {
@override
void initState() {
super.initState();
- widget.controller.setNavigationDelegate(
- NavigationDelegate(
- onPageStarted: (url) {
- setState(() {
- loadingPercentage = 0;
- });
- },
- onProgress: (progress) {
- setState(() {
- loadingPercentage = progress;
- });
- },
- onPageFinished: (url) {
- setState(() {
- loadingPercentage = 100;
- });
- },
- onNavigationRequest: (navigation) {
- final host = Uri.parse(navigation.url).host;
- if (host.contains('youtube.com')) {
- ScaffoldMessenger.of(context).showSnackBar(
- SnackBar(content: Text('Blocking navigation to $host')),
- );
- return NavigationDecision.prevent;
- }
- return NavigationDecision.navigate;
- },
- ),
- );
+ widget.controller
+ ..setNavigationDelegate(
+ NavigationDelegate(
+ onPageStarted: (url) {
+ setState(() {
+ loadingPercentage = 0;
+ });
+ },
+ onProgress: (progress) {
+ setState(() {
+ loadingPercentage = progress;
+ });
+ },
+ onPageFinished: (url) {
+ setState(() {
+ loadingPercentage = 100;
+ });
+ },
+ onNavigationRequest: (navigation) {
+ final host = Uri.parse(navigation.url).host;
+ if (host.contains('youtube.com')) {
+ ScaffoldMessenger.of(context).showSnackBar(
+ SnackBar(content: Text('Blocking navigation to $host')),
+ );
+ return NavigationDecision.prevent;
+ }
+ return NavigationDecision.navigate;
+ },
+ ),
+ )
+ ..setJavaScriptMode(JavaScriptMode.unrestricted);
}
@override
- name: Copy step_09
copydir:
from: webview_in_flutter
to: step_09
- name: step_10
steps:
- name: Remove step_10
rmdir: step_10
- name: Patch lib/src/menu.dart
path: webview_in_flutter/lib/src/menu.dart
patch-u: |
--- b/webview_flutter/step_10/lib/src/menu.dart
+++ a/webview_flutter/step_10/lib/src/menu.dart
@@ -5,7 +5,7 @@
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
-enum _MenuOptions { navigationDelegate, userAgent }
+enum _MenuOptions { navigationDelegate, userAgent, javascriptChannel }
class Menu extends StatefulWidget {
const Menu({required this.controller, super.key});
@@ -33,6 +33,19 @@ class _MenuState extends State<Menu> {
ScaffoldMessenger.of(
context,
).showSnackBar(SnackBar(content: Text('$userAgent')));
+ case _MenuOptions.javascriptChannel:
+ await widget.controller.runJavaScript('''
+var req = new XMLHttpRequest();
+req.open('GET', "https://api.ipify.org/?format=json");
+req.onload = function() {
+ if (req.status == 200) {
+ let response = JSON.parse(req.responseText);
+ SnackBar.postMessage("IP Address: " + response.ip);
+ } else {
+ SnackBar.postMessage("Error: " + req.status);
+ }
+}
+req.send();''');
}
},
itemBuilder:
@@ -45,6 +58,10 @@ class _MenuState extends State<Menu> {
value: _MenuOptions.userAgent,
child: Text('Show user-agent'),
),
+ const PopupMenuItem<_MenuOptions>(
+ value: _MenuOptions.javascriptChannel,
+ child: Text('Lookup IP Address'),
+ ),
],
);
}
- name: Patch lib/src/web_view_stack.dart
path: webview_in_flutter/lib/src/web_view_stack.dart
patch-u: |
--- b/webview_flutter/step_10/lib/src/web_view_stack.dart
+++ a/webview_flutter/step_10/lib/src/web_view_stack.dart
@@ -50,7 +50,15 @@ class _WebViewStackState extends State<WebViewStack> {
},
),
)
- ..setJavaScriptMode(JavaScriptMode.unrestricted);
+ ..setJavaScriptMode(JavaScriptMode.unrestricted)
+ ..addJavaScriptChannel(
+ 'SnackBar',
+ onMessageReceived: (message) {
+ ScaffoldMessenger.of(
+ context,
+ ).showSnackBar(SnackBar(content: Text(message.message)));
+ },
+ );
}
@override
- name: Copy step_10
copydir:
from: webview_in_flutter
to: step_10
- name: step_11
steps:
- name: Remove step_11
rmdir: step_11
- name: Patch lib/src/menu.dart
path: webview_in_flutter/lib/src/menu.dart
patch-u: |
--- b/webview_flutter/step_11/lib/src/menu.dart
+++ a/webview_flutter/step_11/lib/src/menu.dart
@@ -5,7 +5,16 @@
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
-enum _MenuOptions { navigationDelegate, userAgent, javascriptChannel }
+enum _MenuOptions {
+ navigationDelegate,
+ userAgent,
+ javascriptChannel,
+ listCookies,
+ clearCookies,
+ addCookie,
+ setCookie,
+ removeCookie,
+}
class Menu extends StatefulWidget {
const Menu({required this.controller, super.key});
@@ -17,6 +26,8 @@ class Menu extends StatefulWidget {
}
class _MenuState extends State<Menu> {
+ final cookieManager = WebViewCookieManager();
+
@override
Widget build(BuildContext context) {
return PopupMenuButton<_MenuOptions>(
@@ -46,6 +57,16 @@ req.onload = function() {
}
}
req.send();''');
+ case _MenuOptions.clearCookies:
+ await _onClearCookies();
+ case _MenuOptions.listCookies:
+ await _onListCookies(widget.controller);
+ case _MenuOptions.addCookie:
+ await _onAddCookie(widget.controller);
+ case _MenuOptions.setCookie:
+ await _onSetCookie(widget.controller);
+ case _MenuOptions.removeCookie:
+ await _onRemoveCookie(widget.controller);
}
},
itemBuilder:
@@ -62,7 +83,81 @@ req.send();''');
value: _MenuOptions.javascriptChannel,
child: Text('Lookup IP Address'),
),
+ const PopupMenuItem<_MenuOptions>(
+ value: _MenuOptions.clearCookies,
+ child: Text('Clear cookies'),
+ ),
+ const PopupMenuItem<_MenuOptions>(
+ value: _MenuOptions.listCookies,
+ child: Text('List cookies'),
+ ),
+ const PopupMenuItem<_MenuOptions>(
+ value: _MenuOptions.addCookie,
+ child: Text('Add cookie'),
+ ),
+ const PopupMenuItem<_MenuOptions>(
+ value: _MenuOptions.setCookie,
+ child: Text('Set cookie'),
+ ),
+ const PopupMenuItem<_MenuOptions>(
+ value: _MenuOptions.removeCookie,
+ child: Text('Remove cookie'),
+ ),
],
);
}
+
+ Future<void> _onListCookies(WebViewController controller) async {
+ final String cookies =
+ await controller.runJavaScriptReturningResult('document.cookie')
+ as String;
+ if (!mounted) return;
+ ScaffoldMessenger.of(context).showSnackBar(
+ SnackBar(
+ content: Text(cookies.isNotEmpty ? cookies : 'There are no cookies.'),
+ ),
+ );
+ }
+
+ Future<void> _onClearCookies() async {
+ final hadCookies = await cookieManager.clearCookies();
+ String message = 'There were cookies. Now, they are gone!';
+ if (!hadCookies) {
+ message = 'There were no cookies to clear.';
+ }
+ if (!mounted) return;
+ ScaffoldMessenger.of(
+ context,
+ ).showSnackBar(SnackBar(content: Text(message)));
+ }
+
+ Future<void> _onAddCookie(WebViewController controller) async {
+ await controller.runJavaScript('''var date = new Date();
+ date.setTime(date.getTime()+(30*24*60*60*1000));
+ document.cookie = "FirstName=John; expires=" + date.toGMTString();''');
+ if (!mounted) return;
+ ScaffoldMessenger.of(
+ context,
+ ).showSnackBar(const SnackBar(content: Text('Custom cookie added.')));
+ }
+
+ Future<void> _onSetCookie(WebViewController controller) async {
+ await cookieManager.setCookie(
+ const WebViewCookie(name: 'foo', value: 'bar', domain: 'flutter.dev'),
+ );
+ if (!mounted) return;
+ ScaffoldMessenger.of(
+ context,
+ ).showSnackBar(const SnackBar(content: Text('Custom cookie is set.')));
+ }
+
+ Future<void> _onRemoveCookie(WebViewController controller) async {
+ await controller.runJavaScript(
+ 'document.cookie="FirstName=John; expires=Thu, 01 Jan 1970 00:00:00 UTC" ',
+ );
+ if (!mounted) return;
+ ScaffoldMessenger.of(
+ context,
+ ).showSnackBar(const SnackBar(content: Text('Custom cookie removed.')));
+ }
}
- name: Copy step_11
copydir:
from: webview_in_flutter
to: step_11
- name: step_12
steps:
- name: Remove step_12
rmdir: step_12
- name: Add path_provider
path: webview_in_flutter
flutter: pub add path_provider
- name: Patch pubspec.yaml
path: webview_in_flutter/pubspec.yaml
patch-u: |
--- b/webview_flutter/step_12/pubspec.yaml
+++ a/webview_flutter/step_12/pubspec.yaml
@@ -58,6 +59,9 @@ flutter:
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
+ assets:
+ - assets/www/index.html
+ - assets/www/styles/style.css
# To add assets to your application, add an assets section, like this:
# assets:
- name: Patch lib/src/menu.dart
path: webview_in_flutter/lib/src/menu.dart
patch-u: |
--- b/webview_flutter/step_12/lib/src/menu.dart
+++ a/webview_flutter/step_12/lib/src/menu.dart
@@ -2,9 +2,30 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
+import 'dart:io';
import 'package:flutter/material.dart';
+import 'package:path_provider/path_provider.dart';
import 'package:webview_flutter/webview_flutter.dart';
+const String kExamplePage = '''
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<title>Load file or HTML string example</title>
+</head>
+<body>
+
+<h1>Local demo page</h1>
+<p>
+ This is an example page used to demonstrate how to load a local file or HTML
+ string using the <a href="https://pub.dev/packages/webview_flutter">Flutter
+ webview</a> plugin.
+</p>
+
+</body>
+</html>
+''';
+
enum _MenuOptions {
navigationDelegate,
userAgent,
@@ -14,6 +35,9 @@ enum _MenuOptions {
addCookie,
setCookie,
removeCookie,
+ loadFlutterAsset,
+ loadLocalFile,
+ loadHtmlString,
}
class Menu extends StatefulWidget {
@@ -67,6 +91,15 @@ req.send();''');
await _onSetCookie(widget.controller);
case _MenuOptions.removeCookie:
await _onRemoveCookie(widget.controller);
+ case _MenuOptions.loadFlutterAsset:
+ if (!mounted) return;
+ await _onLoadFlutterAssetExample(widget.controller, context);
+ case _MenuOptions.loadLocalFile:
+ if (!mounted) return;
+ await _onLoadLocalFileExample(widget.controller, context);
+ case _MenuOptions.loadHtmlString:
+ if (!mounted) return;
+ await _onLoadHtmlStringExample(widget.controller, context);
}
},
itemBuilder:
@@ -103,6 +136,18 @@ req.send();''');
value: _MenuOptions.removeCookie,
child: Text('Remove cookie'),
),
+ const PopupMenuItem<_MenuOptions>(
+ value: _MenuOptions.loadFlutterAsset,
+ child: Text('Load Flutter Asset'),
+ ),
+ const PopupMenuItem<_MenuOptions>(
+ value: _MenuOptions.loadHtmlString,
+ child: Text('Load HTML string'),
+ ),
+ const PopupMenuItem<_MenuOptions>(
+ value: _MenuOptions.loadLocalFile,
+ child: Text('Load local file'),
+ ),
],
);
}
@@ -160,4 +205,37 @@ req.send();''');
context,
).showSnackBar(const SnackBar(content: Text('Custom cookie removed.')));
}
+
+ Future<void> _onLoadFlutterAssetExample(
+ WebViewController controller,
+ BuildContext context,
+ ) async {
+ await controller.loadFlutterAsset('assets/www/index.html');
+ }
+
+ Future<void> _onLoadLocalFileExample(
+ WebViewController controller,
+ BuildContext context,
+ ) async {
+ final String pathToIndex = await _prepareLocalFile();
+
+ await controller.loadFile(pathToIndex);
+ }
+
+ static Future<String> _prepareLocalFile() async {
+ final String tmpDir = (await getTemporaryDirectory()).path;
+ final File indexFile = File('$tmpDir/www/index.html');
+
+ await Directory('$tmpDir/www').create(recursive: true);
+ await indexFile.writeAsString(kExamplePage);
+
+ return indexFile.path;
+ }
+
+ Future<void> _onLoadHtmlStringExample(
+ WebViewController controller,
+ BuildContext context,
+ ) async {
+ await controller.loadHtmlString(kExamplePage);
+ }
}
- name: Make assets
path: webview_in_flutter
mkdir: assets