Add plugin and host registration to multiple_flutters example (#942)

add_to_app/multiple_flutters/multiple_flutters_android/app/src/main/AndroidManifest.xml

@@ -2,6 +2,14 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="dev.flutter.multipleflutters">
 
+    <!-- Provide required visibility configuration for API level 30 and above -->
+    <queries>
+        <intent>
+            <action android:name="android.intent.action.VIEW" />
+            <data android:scheme="https" />
+        </intent>
+    </queries>
+
     <application
         android:name=".App"
         android:allowBackup="true"

add_to_app/multiple_flutters/multiple_flutters_ios/MultipleFluttersIos/SingleFlutterViewController.swift

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 import Flutter
+import FlutterPluginRegistrant
 import Foundation
 
 /// A FlutterViewController intended for the MyApp widget in the Flutter module.
@@ -16,6 +17,7 @@ class SingleFlutterViewController: FlutterViewController, DataModelObserver {
   init(withEntrypoint entryPoint: String?) {
     let appDelegate: AppDelegate = UIApplication.shared.delegate as! AppDelegate
     let newEngine = appDelegate.engines.makeEngine(withEntrypoint: entryPoint, libraryURI: nil)
+    GeneratedPluginRegistrant.register(with: newEngine)
     super.init(engine: newEngine, nibName: nil, bundle: nil)
     DataModel.shared.addObserver(observer: self)
   }

add_to_app/multiple_flutters/multiple_flutters_ios/Podfile

@@ -1,11 +1,11 @@
-# Uncomment the next line to define a global platform for your project
-# platform :ios, '9.0'
+# Copyright 2021 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.
 
 flutter_application_path = '../multiple_flutters_module'
 load File.join(flutter_application_path, '.ios', 'Flutter', 'podhelper.rb')
 
 target 'MultipleFluttersIos' do
-  # Comment the next line if you don't want to use dynamic frameworks
   use_frameworks!
   install_all_flutter_pods(flutter_application_path)
 end

add_to_app/multiple_flutters/multiple_flutters_ios/Podfile.lock

@@ -2,13 +2,17 @@ PODS:
   - Flutter (1.0.0)
   - FlutterPluginRegistrant (0.0.1):
     - Flutter
+    - url_launcher
   - multiple_flutters_module (0.0.1):
     - Flutter
+  - url_launcher (0.0.1):
+    - Flutter
 
 DEPENDENCIES:
   - Flutter (from `../multiple_flutters_module/.ios/Flutter/engine`)
   - FlutterPluginRegistrant (from `../multiple_flutters_module/.ios/Flutter/FlutterPluginRegistrant`)
   - multiple_flutters_module (from `../multiple_flutters_module/.ios/Flutter`)
+  - url_launcher (from `../multiple_flutters_module/.ios/.symlinks/plugins/url_launcher/ios`)
 
 EXTERNAL SOURCES:
   Flutter:
@@ -17,12 +21,15 @@ EXTERNAL SOURCES:
     :path: "../multiple_flutters_module/.ios/Flutter/FlutterPluginRegistrant"
   multiple_flutters_module:
     :path: "../multiple_flutters_module/.ios/Flutter"
+  url_launcher:
+    :path: "../multiple_flutters_module/.ios/.symlinks/plugins/url_launcher/ios"
 
 SPEC CHECKSUMS:
   Flutter: bdfa2e8fe0e2880a2c6a58a0b1a8675c262a07af
-  FlutterPluginRegistrant: 2afd5ea46d3a949472c9b7da6462d8fbf7d8b16e
+  FlutterPluginRegistrant: d0de10c7c4fc31cc6b676a5965b96100f7c035f7
   multiple_flutters_module: fdf461a0e4225614d475110d85db6fd6de5aeff1
+  url_launcher: b6e016d912f04be9f5bf6e8e82dc599b7ba59649
 
-PODFILE CHECKSUM: d7f39981f450db398859f05de2475ec53909a487
+PODFILE CHECKSUM: 91c00dfcff6ea3b8d853bf0c2411672a01ca993c
 
-COCOAPODS: 1.10.1
+COCOAPODS: 1.11.2

add_to_app/multiple_flutters/multiple_flutters_module/lib/main.dart

@@ -4,6 +4,7 @@
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:url_launcher/url_launcher.dart' as launcher;
 
 void main() => runApp(const MyApp(color: Colors.blue));
 
@@ -90,6 +91,17 @@ class _MyHomePageState extends State<MyHomePage> {
               },
               child: const Text('Next'),
             ),
+            ElevatedButton(
+              onPressed: () async {
+                // Use the url_launcher plugin to open the Flutter docs in
+                // a browser.
+                const url = 'https://flutter.dev/docs';
+                if (await launcher.canLaunch(url)) {
+                  launcher.launch(url);
+                }
+              },
+              child: const Text('Open Flutter Docs'),
+            ),
           ],
         ),
       ),

add_to_app/multiple_flutters/multiple_flutters_module/pubspec.lock

@@ -7,7 +7,7 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.8.1"
+    version: "2.8.2"
   boolean_selector:
     dependency: transitive
     description:
@@ -21,7 +21,7 @@ packages:
       name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.0"
   charcode:
     dependency: transitive
     description:
@@ -74,6 +74,18 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_web_plugins:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  js:
+    dependency: transitive
+    description:
+      name: js
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.6.3"
   lints:
     dependency: transitive
     description:
@@ -87,7 +99,7 @@ packages:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.10"
+    version: "0.12.11"
   meta:
     dependency: transitive
     description:
@@ -102,6 +114,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.8.0"
+  plugin_platform_interface:
+    dependency: transitive
+    description:
+      name: plugin_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.2"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -148,7 +167,7 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.2"
+    version: "0.4.3"
   typed_data:
     dependency: transitive
     description:
@@ -156,12 +175,55 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.0"
+  url_launcher:
+    dependency: "direct main"
+    description:
+      name: url_launcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "6.0.12"
+  url_launcher_linux:
+    dependency: transitive
+    description:
+      name: url_launcher_linux
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.2"
+  url_launcher_macos:
+    dependency: transitive
+    description:
+      name: url_launcher_macos
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.2"
+  url_launcher_platform_interface:
+    dependency: transitive
+    description:
+      name: url_launcher_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.4"
+  url_launcher_web:
+    dependency: transitive
+    description:
+      name: url_launcher_web
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.4"
+  url_launcher_windows:
+    dependency: transitive
+    description:
+      name: url_launcher_windows
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.2"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
 sdks:
-  dart: ">=2.12.0 <3.0.0"
+  dart: ">=2.14.0 <3.0.0"
+  flutter: ">=2.5.0"

add_to_app/multiple_flutters/multiple_flutters_module/pubspec.yaml

@@ -9,6 +9,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
+  url_launcher: ^6.0.6
 
   cupertino_icons: ^1.0.0