Migrated the starting BMI project to V2 Android

.gitignore

@@ -1,6 +1,5 @@
 # Miscellaneous
 *.class
-*.lock
 *.log
 *.pyc
 *.swp
@@ -9,63 +8,37 @@
 .buildlog/
 .history
 .svn/
+migrate_working_dir/
 
 # IntelliJ related
 *.iml
 *.ipr
 *.iws
 .idea/
 
-# Visual Studio Code related
-.vscode/
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
 
 # Flutter/Dart/Pub related
 **/doc/api/
+**/ios/Flutter/.last_build_id
 .dart_tool/
 .flutter-plugins
+.flutter-plugins-dependencies
 .packages
 .pub-cache/
 .pub/
-build/
+/build/
 
-# Android related
-**/android/**/gradle-wrapper.jar
-**/android/.gradle
-**/android/captures/
-**/android/gradlew
-**/android/gradlew.bat
-**/android/local.properties
-**/android/**/GeneratedPluginRegistrant.java
+# Symbolication related
+app.*.symbols
 
-# iOS/XCode related
-**/ios/**/*.mode1v3
-**/ios/**/*.mode2v3
-**/ios/**/*.moved-aside
-**/ios/**/*.pbxuser
-**/ios/**/*.perspectivev3
-**/ios/**/*sync/
-**/ios/**/.sconsign.dblite
-**/ios/**/.tags*
-**/ios/**/.vagrant/
-**/ios/**/DerivedData/
-**/ios/**/Icon?
-**/ios/**/Pods/
-**/ios/**/.symlinks/
-**/ios/**/profile
-**/ios/**/xcuserdata
-**/ios/.generated/
-**/ios/Flutter/App.framework
-**/ios/Flutter/Flutter.framework
-**/ios/Flutter/Generated.xcconfig
-**/ios/Flutter/app.flx
-**/ios/Flutter/app.zip
-**/ios/Flutter/flutter_assets/
-**/ios/ServiceDefinitions.json
-**/ios/Runner/GeneratedPluginRegistrant.*
+# Obfuscation related
+app.*.map.json
 
-# Exceptions to above rules.
-!**/ios/**/default.mode1v3
-!**/ios/**/default.mode2v3
-!**/ios/**/default.pbxuser
-!**/ios/**/default.perspectivev3
-!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release

.metadata

@@ -1,10 +1,45 @@
 # This file tracks properties of this Flutter project.
 # Used by Flutter tool to assess capabilities and perform upgrades etc.
 #
-# This file should be version controlled and should not be manually edited.
+# This file should be version controlled.
 
 version:
-  revision: 5391447fae6209bb21a89e6a5a6583cac1af9b4b
+  revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
   channel: stable
 
 project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+      base_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+    - platform: android
+      create_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+      base_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+    - platform: ios
+      create_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+      base_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+    - platform: linux
+      create_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+      base_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+    - platform: macos
+      create_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+      base_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+    - platform: web
+      create_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+      base_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+    - platform: windows
+      create_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+      base_revision: b8f7f1f9869bb2d116aa6a70dbeac61000b52849
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

README.md

@@ -5,20 +5,20 @@
 
 ## Our Goal
 
-The objective of this tutorial is to look at how we can customise Flutter Widgets to achieve our own beautiful user interface designs. If you have a designer on board, no matter how unconventional their designs are, we can create them using Flutter. 
+The objective of this tutorial is to look at how we can customise Flutter Widgets to achieve our own beautiful user interface designs. If you have a designer on board, no matter how unconventional their designs are, we can create them using Flutter.
 
 
 ## What you will create
 
-We’re going to make a Body Mass Index Calculator inspired by the beautiful designs made by [Ruben Vaalt](https://dribbble.com/shots/4585382-Simple-BMI-Calculator). It will be a multi screen app with simple functionality but full-on custom styling. 
+We’re going to make a Body Mass Index Calculator inspired by the beautiful designs made by [Ruben Vaalt](https://dribbble.com/shots/4585382-Simple-BMI-Calculator). It will be a multi screen app with simple functionality but full-on custom styling.
 
 ![Finished App](https://github.com/londonappbrewery/Images/blob/master/bmi-calc-demo.gif)
 
 ## What you will learn
 
-- How to use Flutter themes to create coherent branding. 
+- How to use Flutter themes to create coherent branding.
 - How to create multi-page apps using Flutter Routes and Navigator.
-- How to extract and refactor Flutter Widgets with a click of the button. 
+- How to extract and refactor Flutter Widgets with a click of the button.
 - How to pass functions as parameters and fields.
 - How to use the GestureDetector Widget to detect more than just a tap.
 - How to use custom colour palettes by using hex codes.
@@ -29,4 +29,4 @@ We’re going to make a Body Mass Index Calculator inspired by the beautiful des
 
 >This is a companion project to The App Brewery's Complete Flutter Development Bootcamp, check out the full course at [www.appbrewery.co](https://www.appbrewery.co/)
 
-![End Banner](https://github.com/londonappbrewery/Images/blob/master/readme-end-banner.png)
+![End Banner](https://github.com/londonappbrewery/Images/blob/master/readme-end-banner.png)

analysis_options.yaml

@@ -0,0 +1,29 @@
+# This file configures the analyzer, which statically analyzes Dart code to
+# check for errors, warnings, and lints.
+#
+# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
+# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
+# invoked from the command line by running `flutter analyze`.
+
+# The following line activates a set of recommended lints for Flutter apps,
+# packages, and plugins designed to encourage good coding practices.
+include: package:flutter_lints/flutter.yaml
+
+linter:
+  # The lint rules applied to this project can be customized in the
+  # section below to disable rules from the `package:flutter_lints/flutter.yaml`
+  # included above or to enable additional rules. A list of all available lints
+  # and their documentation is published at
+  # https://dart-lang.github.io/linter/lints/index.html.
+  #
+  # Instead of disabling a lint rule for the entire project in the
+  # section below, it can also be suppressed for a single line of code
+  # or a specific dart file by using the `// ignore: name_of_lint` and
+  # `// ignore_for_file: name_of_lint` syntax on the line or in the file
+  # producing the lint.
+  rules:
+    # avoid_print: false  # Uncomment to disable the `avoid_print` rule
+    # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

android/.gitignore

@@ -0,0 +1,13 @@
+gradle-wrapper.jar
+/.gradle
+/captures/
+/gradlew
+/gradlew.bat
+/local.properties
+GeneratedPluginRegistrant.java
+
+# Remember to never publicly share your keystore.
+# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
+key.properties
+**/*.keystore
+**/*.jks

android/app/build.gradle

@@ -8,7 +8,7 @@ if (localPropertiesFile.exists()) {
 
 def flutterRoot = localProperties.getProperty('flutter.sdk')
 if (flutterRoot == null) {
-    throw new FileNotFoundException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
+    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
 }
 
 def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
@@ -22,20 +22,33 @@ if (flutterVersionName == null) {
 }
 
 apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion flutter.compileSdkVersion
+    ndkVersion flutter.ndkVersion
 
-    lintOptions {
-        disable 'InvalidPackage'
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
     }
 
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId "co.appbrewery.bmicalculator"
-        minSdkVersion 16
-        targetSdkVersion 29
+        applicationId "com.example.bmi_calculator_flutter"
+        // You can update the following values to match your application needs.
+        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-build-configuration.
+        minSdkVersion flutter.minSdkVersion
+        targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
     }
@@ -54,5 +67,5 @@ flutter {
 }
 
 dependencies {
-
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 }

android/app/src/debug/AndroidManifest.xml

@@ -0,0 +1,8 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.bmi_calculator_flutter">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

android/app/src/main/AndroidManifest.xml

@@ -1,39 +1,34 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="co.appbrewery.bmicalculator">
-
-    <!-- The INTERNET permission is required for development. Specifically,
-         flutter needs it to communicate with the running application
-         to allow setting breakpoints, to provide hot reload, etc.
-    -->
-    <uses-permission android:name="android.permission.INTERNET"/>
-
-    <!-- io.flutter.app.FlutterApplication is an android.app.Application that
-         calls FlutterMain.startInitialization(this); in its onCreate method.
-         In most cases you can leave this as-is, but you if you want to provide
-         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="bmi_calculator"
+    package="com.example.bmi_calculator_flutter">
+   <application
+        android:label="bmi_calculator_flutter"
+        android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher">
         <activity
             android:name=".MainActivity"
+            android:exported="true"
             android:launchMode="singleTop"
             android:theme="@style/LaunchTheme"
-            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
             android:windowSoftInputMode="adjustResize">
-            <!-- This keeps the window background of the activity showing
-                 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). -->
+            <!-- Specifies an Android theme to apply to this Activity as soon as
+                 the Android process has started. This theme is visible to the user
+                 while the Flutter UI initializes. After that, this theme continues
+                 to determine the Window background behind the Flutter UI. -->
             <meta-data
-                android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
-                android:value="true" />
+              android:name="io.flutter.embedding.android.NormalTheme"
+              android:resource="@style/NormalTheme"
+              />
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
+        <!-- Don't delete the meta-data below.
+             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
+        <meta-data
+            android:name="flutterEmbedding"
+            android:value="2" />
     </application>
 </manifest>

android/app/src/main/kotlin/com/example/bmi_calculator_flutter/MainActivity.kt

@@ -0,0 +1,6 @@
+package com.example.bmi_calculator_flutter
+
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity: FlutterActivity() {
+}

android/app/src/main/res/drawable-v21/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="?android:colorBackground" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

android/app/src/main/res/values-night/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             the Flutter engine draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>