B1

android/app/src/main/AndroidManifest.xml

@@ -7,7 +7,7 @@
          additional functionality it is fine to subclass or reimplement
          FlutterApplication and put your custom class here. -->
     <application
-        android:name="io.flutter.app.FlutterApplication"
+
         android:label="flash_chat"
         android:icon="@mipmap/ic_launcher">
         <activity
@@ -21,13 +21,14 @@
                  until Flutter renders its first frame. It can be removed if
                  there is no splash screen (such as the default splash screen
                  defined in @style/LaunchTheme). -->
-            <meta-data
-                android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
-                android:value="true" />
+
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
+        <meta-data
+            android:name="flutterEmbedding"
+            android:value="2" />
     </application>
 </manifest>

android/app/src/main/java/co/appbrewery/flash_chat/MainActivity.java

@@ -1,13 +1,7 @@
 package co.appbrewery.flash_chat;
 
-import android.os.Bundle;
-import io.flutter.app.FlutterActivity;
-import io.flutter.plugins.GeneratedPluginRegistrant;
+import io.flutter.embedding.android.FlutterActivity;
 
 public class MainActivity extends FlutterActivity {
-  @Override
-  protected void onCreate(Bundle savedInstanceState) {
-    super.onCreate(savedInstanceState);
-    GeneratedPluginRegistrant.registerWith(this);
-  }
+
 }

h

@@ -0,0 +1 @@
+h

lib/main.dart

@@ -12,7 +12,6 @@ class FlashChat extends StatelessWidget {
     return MaterialApp(
       theme: ThemeData.dark().copyWith(
         textTheme: TextTheme(
-          body1: TextStyle(color: Colors.black54),
         ),
       ),
       home: WelcomeScreen(),

lib/screens/chat_screen.dart

@@ -40,7 +40,7 @@ class _ChatScreenState extends State<ChatScreen> {
                       decoration: kMessageTextFieldDecoration,
                     ),
                   ),
-                  FlatButton(
+                  TextButton(
                     onPressed: () {
                       //Implement send functionality.
                     },

lib/screens/login_screen.dart

@@ -4,7 +4,10 @@ class LoginScreen extends StatefulWidget {
   @override
   _LoginScreenState createState() => _LoginScreenState();
 }
-
+//What is Android Embedding? This is simply the Android
+// code that is responsible for integrating Flutter within
+// an Android application
+//embeddig=integration
 class _LoginScreenState extends State<LoginScreen> {
   @override
   Widget build(BuildContext context) {

pubspec.lock

@@ -1,69 +1,55 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
-  archive:
-    dependency: transitive
-    description:
-      name: archive
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.0.11"
-  args:
-    dependency: transitive
-    description:
-      name: args
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.5.2"
   async:
     dependency: transitive
     description:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.4.0"
+    version: "2.9.0"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.5"
-  charcode:
-    dependency: transitive
-    description:
-      name: charcode
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.1.2"
-  collection:
+    version: "2.1.0"
+  characters:
     dependency: transitive
     description:
-      name: collection
+      name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.14.11"
-  convert:
+    version: "1.2.1"
+  clock:
     dependency: transitive
     description:
-      name: convert
+      name: clock
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.1"
-  crypto:
+    version: "1.1.1"
+  collection:
     dependency: transitive
     description:
-      name: crypto
+      name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.3"
+    version: "1.16.0"
   cupertino_icons:
     dependency: "direct main"
     description:
       name: cupertino_icons
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.2"
+    version: "0.1.3"
+  fake_async:
+    dependency: transitive
+    description:
+      name: fake_async
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.3.1"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -74,55 +60,34 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
-  image:
+  matcher:
     dependency: transitive
     description:
-      name: image
+      name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.4"
-  matcher:
+    version: "0.12.12"
+  material_color_utilities:
     dependency: transitive
     description:
-      name: matcher
+      name: material_color_utilities
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.6"
+    version: "0.1.5"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.8"
+    version: "1.8.0"
   path:
     dependency: transitive
     description:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.4"
-  pedantic:
-    dependency: transitive
-    description:
-      name: pedantic
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.8.0+1"
-  petitparser:
-    dependency: transitive
-    description:
-      name: petitparser
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.4.0"
-  quiver:
-    dependency: transitive
-    description:
-      name: quiver
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.0.5"
+    version: "1.8.2"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -134,62 +99,48 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.5"
+    version: "1.9.0"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.9.3"
+    version: "1.10.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.0"
+    version: "2.1.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.5"
+    version: "1.1.1"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.1"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.11"
-  typed_data:
-    dependency: transitive
-    description:
-      name: typed_data
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.1.6"
+    version: "0.4.12"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.8"
-  xml:
-    dependency: transitive
-    description:
-      name: xml
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "3.5.0"
+    version: "2.1.2"
 sdks:
-  dart: ">=2.4.0 <3.0.0"
+  dart: ">=2.17.0-0 <3.0.0"