Initial (redacted) commit.

2024-08-26 00:34:20 +02:00 · 2024-08-26 00:34:20 +02:00 · 655f8a036a
commit 655f8a036a
368 changed files with 20949 additions and 0 deletions
--- a/learning/demo-app/.gitignore
+++ b/learning/demo-app/.gitignore
@ -0,0 +1,44 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# 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/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release
--- a/learning/demo-app/.metadata
+++ b/learning/demo-app/.metadata
@ -0,0 +1,30 @@
+# 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.
+
+version:
+  revision: 796c8ef79279f9c774545b3771238c3098dbefab
+  channel: stable
+
+project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: 796c8ef79279f9c774545b3771238c3098dbefab
+      base_revision: 796c8ef79279f9c774545b3771238c3098dbefab
+    - platform: android
+      create_revision: 796c8ef79279f9c774545b3771238c3098dbefab
+      base_revision: 796c8ef79279f9c774545b3771238c3098dbefab
+
+  # 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'
--- a/learning/demo-app/.vscode/settings.json
+++ b/learning/demo-app/.vscode/settings.json
@ -0,0 +1,4 @@
+{
+  "spellright.language": ["de", "en"],
+  "spellright.documentTypes": ["markdown", "latex", "plaintext"]
+}
--- a/learning/demo-app/.vscode/spellright.dict
+++ b/learning/demo-app/.vscode/spellright.dict
@ -0,0 +1,4 @@
+riverpod
+freezed
+equatable
+figma
--- a/learning/demo-app/README.md
+++ b/learning/demo-app/README.md
@ -0,0 +1,32 @@
+# HCI/Flutter Demo Project
+
+A Flutter demo project with basic architecture.
+
+## Architecture und Libs
+
+This project uses
+
+- [flutter_riverpod](https://pub.dev/packages/flutter_riverpod) for state management including [annotation]() and [generator]()
+- [go_router](https://pub.dev/packages/go_router) for navigation
+- [freezed](https://pub.dev/packages/freezed), [freezed_annotation](https://pub.dev/packages/freezed_annotation) and [equatable](https://pub.dev/packages/equatable) to write less code
+
+
+## Navigation and Layout
+
+For the purpose of demonstration the app
+
+- uses bottom navigation or navigation rail depending on the screen
+- navigates to a separate screen for the details view
+- shows the edit form responsive: either side by side or below
+
+## Debug
+To debug this application you need an installation of Flutter and Android
+1. open the folder with VS Code
+2. open the terminal and run `flutter pub get`
+3. open any dart file in the folder lib and hit F5
+
+If you have problems to start the application run in the terminal `flutter doctor`.
+
+## Edit
+If you edit any provider or freezed class make sure the builder is running 
+`dart run build_runner watch` 
--- a/learning/demo-app/analysis_options.yaml
+++ b/learning/demo-app/analysis_options.yaml
@ -0,0 +1,41 @@
+# 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
+include: package:very_good_analysis/analysis_options.yaml
+
+analyzer:
+  exclude:
+    - "**.g.dart"
+    - "**.freezed.dart"
+  errors:
+    invalid_annotation_target: ignore
+
+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:
+    # a must for libs, but within a small app it is ok to leave it to the end
+    # and document important stuff only
+    public_member_api_docs: false
+    # I prefere relative imports within the app
+    always_use_package_imports: false
+    # things that belong together are easyer to find
+    sort_pub_dependencies: false
+    # if you learn a new framework, I think it is better to use and see the types
+    omit_local_variable_types: false 
--- a/learning/demo-app/android/.gitignore
+++ b/learning/demo-app/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
--- a/learning/demo-app/android/app/build.gradle
+++ b/learning/demo-app/android/app/build.gradle
@ -0,0 +1,67 @@
+plugins {
+    id "com.android.application"
+    id "kotlin-android"
+    id "dev.flutter.flutter-gradle-plugin"
+}
+
+def localProperties = new Properties()
+def localPropertiesFile = rootProject.file('local.properties')
+if (localPropertiesFile.exists()) {
+    localPropertiesFile.withReader('UTF-8') { reader ->
+        localProperties.load(reader)
+    }
+}
+
+def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
+if (flutterVersionCode == null) {
+    flutterVersionCode = '1'
+}
+
+def flutterVersionName = localProperties.getProperty('flutter.versionName')
+if (flutterVersionName == null) {
+    flutterVersionName = '1.0'
+}
+
+android {
+    namespace "com.example.ri_go_demo"
+    compileSdkVersion flutter.compileSdkVersion
+    ndkVersion flutter.ndkVersion
+
+    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 "com.example.ri_go_demo"
+        // You can update the following values to match your application needs.
+        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
+        minSdkVersion 21
+        targetSdkVersion flutter.targetSdkVersion
+        versionCode flutterVersionCode.toInteger()
+        versionName flutterVersionName
+    }
+
+    buildTypes {
+        release {
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig signingConfigs.debug
+        }
+    }
+}
+
+flutter {
+    source '../..'
+}
+
+dependencies {}
--- a/learning/demo-app/android/app/src/debug/AndroidManifest.xml
+++ b/learning/demo-app/android/app/src/debug/AndroidManifest.xml
@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- 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>
--- a/learning/demo-app/android/app/src/main/AndroidManifest.xml
+++ b/learning/demo-app/android/app/src/main/AndroidManifest.xml
@ -0,0 +1,44 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <application
+        android:label="ri_go_demo"
+        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|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+            android:hardwareAccelerated="true"
+            android:windowSoftInputMode="adjustResize">
+            <!-- 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.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>
+    <!-- Required to query activities that can process text, see:
+         https://developer.android.com/training/package-visibility?hl=en and
+         https://developer.android.com/reference/android/content/Intent#ACTION_PROCESS_TEXT.
+
+         In particular, this is used by the Flutter engine in io.flutter.plugin.text.ProcessTextPlugin. -->
+    <queries>
+        <intent>
+            <action android:name="android.intent.action.PROCESS_TEXT"/>
+            <data android:mimeType="text/plain"/>
+        </intent>
+    </queries>
+</manifest>
--- a/learning/demo-app/android/app/src/main/kotlin/com/example/app/MainActivity.kt
+++ b/learning/demo-app/android/app/src/main/kotlin/com/example/app/MainActivity.kt
@ -0,0 +1,6 @@
+package com.example.app
+
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity: FlutterActivity() {
+}
--- a/learning/demo-app/android/app/src/main/kotlin/com/example/ri_go_demo/MainActivity.kt
+++ b/learning/demo-app/android/app/src/main/kotlin/com/example/ri_go_demo/MainActivity.kt
@ -0,0 +1,6 @@
+package com.example.ri_go_demo
+
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity: FlutterActivity() {
+}
--- a/learning/demo-app/android/app/src/main/res/drawable-v21/launch_background.xml
+++ b/learning/demo-app/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>
--- a/learning/demo-app/android/app/src/main/res/drawable/launch_background.xml
+++ b/learning/demo-app/android/app/src/main/res/drawable/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:color/white" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>
--- a/learning/demo-app/android/app/src/main/res/mipmap-hdpi/ic_launcher.png
+++ b/learning/demo-app/android/app/src/main/res/mipmap-hdpi/ic_launcher.png
--- a/learning/demo-app/android/app/src/main/res/mipmap-mdpi/ic_launcher.png
+++ b/learning/demo-app/android/app/src/main/res/mipmap-mdpi/ic_launcher.png
--- a/learning/demo-app/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png
+++ b/learning/demo-app/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png
--- a/learning/demo-app/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
+++ b/learning/demo-app/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
--- a/learning/demo-app/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
+++ b/learning/demo-app/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
--- a/learning/demo-app/android/app/src/main/res/values-night/styles.xml
+++ b/learning/demo-app/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>
--- a/learning/demo-app/android/app/src/main/res/values/styles.xml
+++ b/learning/demo-app/android/app/src/main/res/values/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 off -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Light.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.Light.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>
--- a/learning/demo-app/android/app/src/profile/AndroidManifest.xml
+++ b/learning/demo-app/android/app/src/profile/AndroidManifest.xml
@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- 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>
--- a/learning/demo-app/android/build.gradle
+++ b/learning/demo-app/android/build.gradle
@ -0,0 +1,18 @@
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.buildDir = '../build'
+subprojects {
+    project.buildDir = "${rootProject.buildDir}/${project.name}"
+}
+subprojects {
+    project.evaluationDependsOn(':app')
+}
+
+tasks.register("clean", Delete) {
+    delete rootProject.buildDir
+}
--- a/learning/demo-app/android/gradle.properties
+++ b/learning/demo-app/android/gradle.properties
@ -0,0 +1,3 @@
+org.gradle.jvmargs=-Xmx4G
+android.useAndroidX=true
+android.enableJetifier=true
--- a/learning/demo-app/android/gradle/wrapper/gradle-wrapper.properties
+++ b/learning/demo-app/android/gradle/wrapper/gradle-wrapper.properties
@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.3-all.zip
--- a/learning/demo-app/android/settings.gradle
+++ b/learning/demo-app/android/settings.gradle
@ -0,0 +1,26 @@
+pluginManagement {
+    def flutterSdkPath = {
+        def properties = new Properties()
+        file("local.properties").withInputStream { properties.load(it) }
+        def flutterSdkPath = properties.getProperty("flutter.sdk")
+        assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
+        return flutterSdkPath
+    }
+    settings.ext.flutterSdkPath = flutterSdkPath()
+
+    includeBuild("${settings.ext.flutterSdkPath}/packages/flutter_tools/gradle")
+
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+plugins {
+    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
+    id "com.android.application" version "7.3.0" apply false
+    id "org.jetbrains.kotlin.android" version "1.7.10" apply false
+}
+
+include ":app"
--- a/learning/demo-app/ios/.gitignore
+++ b/learning/demo-app/ios/.gitignore
@ -0,0 +1,34 @@
+**/dgph
+*.mode1v3
+*.mode2v3
+*.moved-aside
+*.pbxuser
+*.perspectivev3
+**/*sync/
+.sconsign.dblite
+.tags*
+**/.vagrant/
+**/DerivedData/
+Icon?
+**/Pods/
+**/.symlinks/
+profile
+xcuserdata
+**/.generated/
+Flutter/App.framework
+Flutter/Flutter.framework
+Flutter/Flutter.podspec
+Flutter/Generated.xcconfig
+Flutter/ephemeral/
+Flutter/app.flx
+Flutter/app.zip
+Flutter/flutter_assets/
+Flutter/flutter_export_environment.sh
+ServiceDefinitions.json
+Runner/GeneratedPluginRegistrant.*
+
+# Exceptions to above rules.
+!default.mode1v3
+!default.mode2v3
+!default.pbxuser
+!default.perspectivev3
--- a/learning/demo-app/ios/Flutter/AppFrameworkInfo.plist
+++ b/learning/demo-app/ios/Flutter/AppFrameworkInfo.plist
@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>App</string>
+  <key>CFBundleIdentifier</key>
+  <string>io.flutter.flutter.app</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>App</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>1.0</string>
+  <key>MinimumOSVersion</key>
+  <string>12.0</string>
+</dict>
+</plist>
--- a/learning/demo-app/ios/Flutter/Debug.xcconfig
+++ b/learning/demo-app/ios/Flutter/Debug.xcconfig
@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
+#include "Generated.xcconfig"
--- a/learning/demo-app/ios/Flutter/Release.xcconfig
+++ b/learning/demo-app/ios/Flutter/Release.xcconfig
@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
+#include "Generated.xcconfig"
--- a/learning/demo-app/ios/Runner.xcodeproj/project.pbxproj
+++ b/learning/demo-app/ios/Runner.xcodeproj/project.pbxproj
@ -0,0 +1,616 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 54;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
+		331C808B294A63AB00263BE5 /* RunnerTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 331C807B294A618700263BE5 /* RunnerTests.swift */; };
+		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
+		74858FAF1ED2DC5600515810 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 74858FAE1ED2DC5600515810 /* AppDelegate.swift */; };
+		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
+		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
+		97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXContainerItemProxy section */
+		331C8085294A63A400263BE5 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 97C146E61CF9000F007C117D /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 97C146ED1CF9000F007C117D;
+			remoteInfo = Runner;
+		};
+/* End PBXContainerItemProxy section */
+
+/* Begin PBXCopyFilesBuildPhase section */
+		9705A1C41CF9048500538489 /* Embed Frameworks */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 10;
+			files = (
+			);
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+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				ENABLE_NS_ASSERTIONS = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = NO;
+				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				MTL_ENABLE_DEBUG_INFO = NO;
+				SDKROOT = iphoneos;
+				SUPPORTED_PLATFORMS = iphoneos;
+				SWIFT_COMPILATION_MODE = wholemodule;
+				SWIFT_OPTIMIZATION_LEVEL = "-O";
+				TARGETED_DEVICE_FAMILY = "1,2";
+				VALIDATE_PRODUCT = YES;
+			};
+			name = Release;
+		};
+		97C147061CF9000F007C117D /* Debug */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 9740EEB21CF90195004384FC /* Debug.xcconfig */;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
+				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				ENABLE_BITCODE = NO;
+				INFOPLIST_FILE = Runner/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = com.example.ri_go_demo;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
+				VERSIONING_SYSTEM = "apple-generic";
+			};
+			name = Debug;
+		};
+		97C147071CF9000F007C117D /* Release */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
+				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				ENABLE_BITCODE = NO;
+				INFOPLIST_FILE = Runner/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = com.example.ri_go_demo;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
+				SWIFT_VERSION = 5.0;
+				VERSIONING_SYSTEM = "apple-generic";
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		331C8087294A63A400263BE5 /* Build configuration list for PBXNativeTarget "RunnerTests" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				331C8088294A63A400263BE5 /* Debug */,
+				331C8089294A63A400263BE5 /* Release */,
+				331C808A294A63A400263BE5 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		97C146E91CF9000F007C117D /* Build configuration list for PBXProject "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				97C147031CF9000F007C117D /* Debug */,
+				97C147041CF9000F007C117D /* Release */,
+				249021D3217E4FDB00AE95B9 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		97C147051CF9000F007C117D /* Build configuration list for PBXNativeTarget "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				97C147061CF9000F007C117D /* Debug */,
+				97C147071CF9000F007C117D /* Release */,
+				249021D4217E4FDB00AE95B9 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 97C146E61CF9000F007C117D /* Project object */;
+}
--- a/learning/demo-app/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata
+++ b/learning/demo-app/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata
@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>
--- a/learning/demo-app/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
+++ b/learning/demo-app/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>
--- a/learning/demo-app/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings
+++ b/learning/demo-app/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings
@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>
--- a/learning/demo-app/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
+++ b/learning/demo-app/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
@ -0,0 +1,98 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1510"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+               BuildableName = "Runner.app"
+               BlueprintName = "Runner"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <Testables>
+         <TestableReference
+            skipped = "NO"
+            parallelizable = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "331C8080294A63A400263BE5"
+               BuildableName = "RunnerTests.xctest"
+               BlueprintName = "RunnerTests"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Profile"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
--- a/learning/demo-app/ios/Runner.xcworkspace/contents.xcworkspacedata
+++ b/learning/demo-app/ios/Runner.xcworkspace/contents.xcworkspacedata
@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+</Workspace>
--- a/learning/demo-app/ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
+++ b/learning/demo-app/ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>
--- a/learning/demo-app/ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings
+++ b/learning/demo-app/ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings
@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>
--- a/learning/demo-app/ios/Runner/AppDelegate.swift
+++ b/learning/demo-app/ios/Runner/AppDelegate.swift
@ -0,0 +1,13 @@
+import UIKit
+import Flutter
+
+@UIApplicationMain
+@objc class AppDelegate: FlutterAppDelegate {
+  override func application(
+    _ application: UIApplication,
+    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
+  ) -> Bool {
+    GeneratedPluginRegistrant.register(with: self)
+    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
+  }
+}
--- a/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json
@ -0,0 +1,122 @@
+{
+  "images" : [
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "83.5x83.5",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-83.5x83.5@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "1024x1024",
+      "idiom" : "ios-marketing",
+      "filename" : "Icon-App-1024x1024@1x.png",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
--- a/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json
@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
--- a/learning/demo-app/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png
--- a/learning/demo-app/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md
+++ b/learning/demo-app/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md
@ -0,0 +1,5 @@
+# Launch Screen Assets
+
+You can customize the launch screen with your own desired assets by replacing the image files in this directory.
+
+You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images.
--- a/learning/demo-app/ios/Runner/Base.lproj/LaunchScreen.storyboard
+++ b/learning/demo-app/ios/Runner/Base.lproj/LaunchScreen.storyboard
@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="Ydg-fD-yQy"/>
+                        <viewControllerLayoutGuide type="bottom" id="xbc-2k-c8Z"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" image="LaunchImage" translatesAutoresizingMaskIntoConstraints="NO" id="YRO-k0-Ey4">
+                            </imageView>
+                        </subviews>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <constraints>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="1a2-6s-vTC"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="4X2-HB-R7a"/>
+                        </constraints>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+    <resources>
+        <image name="LaunchImage" width="168" height="185"/>
+    </resources>
+</document>
--- a/learning/demo-app/ios/Runner/Base.lproj/Main.storyboard
+++ b/learning/demo-app/ios/Runner/Base.lproj/Main.storyboard
@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
+    </dependencies>
+    <scenes>
+        <!--Flutter View Controller-->
+        <scene sceneID="tne-QT-ifu">
+            <objects>
+                <viewController id="BYZ-38-t0r" customClass="FlutterViewController" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
+                        <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
+            </objects>
+        </scene>
+    </scenes>
+</document>
--- a/learning/demo-app/ios/Runner/Info.plist
+++ b/learning/demo-app/ios/Runner/Info.plist
@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>Ri Go Demo</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>ri_go_demo</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(FLUTTER_BUILD_NAME)</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>$(FLUTTER_BUILD_NUMBER)</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UIViewControllerBasedStatusBarAppearance</key>
+	<false/>
+	<key>CADisableMinimumFrameDurationOnPhone</key>
+	<true/>
+	<key>UIApplicationSupportsIndirectInputEvents</key>
+	<true/>
+</dict>
+</plist>
--- a/learning/demo-app/ios/Runner/Runner-Bridging-Header.h
+++ b/learning/demo-app/ios/Runner/Runner-Bridging-Header.h
@ -0,0 +1 @@
+#import "GeneratedPluginRegistrant.h"
--- a/learning/demo-app/ios/RunnerTests/RunnerTests.swift
+++ b/learning/demo-app/ios/RunnerTests/RunnerTests.swift
@ -0,0 +1,12 @@
+import Flutter
+import UIKit
+import XCTest
+
+class RunnerTests: XCTestCase {
+
+  func testExample() {
+    // If you add code to the Runner application, consider adding tests here.
+    // See https://developer.apple.com/documentation/xctest for more information about using XCTest.
+  }
+
+}
--- a/learning/demo-app/l10n.yaml
+++ b/learning/demo-app/l10n.yaml
@ -0,0 +1,5 @@
+arb-dir: lib/l10n
+template-arb-file: app_en.arb
+output-localization-file: app_localizations.dart
+untranslated-messages-file: untranslated_messages.json
+nullable-getter: false
--- a/learning/demo-app/lib/l10n/app_de.arb
+++ b/learning/demo-app/lib/l10n/app_de.arb
@ -0,0 +1,20 @@
+{
+  "@@locale": "de",
+  "appTitle": "Demo-App mit Riverpod und go_router",
+  "ok": "Ok",
+  "cancel": "Abbrechen",
+  "yes": "Ja",
+  "no": "Nein",
+  "add": "Hinzufügen",
+  "save": "Speichern",
+  "error": "Sorry, da ist etwas schief gegangen...",
+  "loading": "Lade ...",
+  "select": "Auswahl",
+  "selected": "Ausgewählt",
+  "search": "Suche",
+  "counterLabel": "Du hast den Button sooft gedrückt:",
+  "fabMainTooltip": "erhöhen",
+  "placeholder": "placeholder",
+  "home": "Start",
+  "counter": "Zähler"
+}
--- a/learning/demo-app/lib/l10n/app_en.arb
+++ b/learning/demo-app/lib/l10n/app_en.arb
@ -0,0 +1,27 @@
+{
+  "@@locale": "en",
+  "appTitle": "Demo app with riverpod and go_router",
+  "ok": "Ok",
+  "cancel": "Cancel",
+  "yes": "Yes",
+  "no": "No",
+  "add": "Add",
+  "save": "Save",
+  "error": "We apologize for the inconvenience. This should not have happened...",
+  "loading": "Loading",
+  "select": "Select",
+  "selected": "Selected",
+  "deselect": "Deselect",
+  "search": "Search",
+  "counterLabel": "You have pushed the button this many times:",
+  "fabMainTooltip": "Increment",
+  "placeholder": "placeholder",
+  "requiredField": "This field is required",
+  "labelName": "Name",
+  "labelImageUrl": "Url of an image",
+  "delete": "Delete",
+  "home": "Home",
+  "counter": "Counter",
+  "details": "Details",
+  "noItems": "Sorry, no items."
+}
--- a/learning/demo-app/lib/main.dart
+++ b/learning/demo-app/lib/main.dart
@ -0,0 +1,30 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_gen/gen_l10n/app_localizations.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'src/routing/app_router.dart';
+import 'src/utils/localization.dart';
+
+Future<void> main() async {
+  runApp(const ProviderScope(child: MyApp()));
+}
+
+class MyApp extends ConsumerWidget {
+  const MyApp({super.key});
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final goRouter = ref.watch(goRouterProvider);
+    return MaterialApp.router(
+      routerConfig: goRouter,
+      debugShowCheckedModeBanner: false,
+      onGenerateTitle: (context) => context.loc.appTitle,
+      theme: ThemeData(
+        colorScheme: ColorScheme.fromSeed(seedColor: Colors.green),
+        useMaterial3: true,
+      ),
+      localizationsDelegates: AppLocalizations.localizationsDelegates,
+      supportedLocales: AppLocalizations.supportedLocales,
+      // use to find missing semantics
+      // showSemanticsDebugger: true,
+    );
+  }
+}
--- a/learning/demo-app/lib/src/common_widgets/async_value_widget.dart
+++ b/learning/demo-app/lib/src/common_widgets/async_value_widget.dart
@ -0,0 +1,24 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import 'error_message_widget.dart';
+
+//credits to  Code with Andrea https://github.com/bizz84/starter_architecture_flutter_firebase/blob/master/lib/src/common_widgets/async_value_widget.dart
+class AsyncValueWidget<T> extends StatelessWidget {
+  const AsyncValueWidget({required this.value, required this.data, super.key});
+  final AsyncValue<T> value;
+  final Widget Function(T) data;
+
+  @override
+  Widget build(BuildContext context) {
+    return value.when(
+      data: data,
+      error: (error, st) => Center(child: ErrorMessageWidget(error)),
+      loading: () => const SizedBox(
+        width: 60,
+        height: 60,
+        child: Center(child: CircularProgressIndicator()),
+      ),
+    );
+  }
+}
--- a/learning/demo-app/lib/src/common_widgets/error_message_widget.dart
+++ b/learning/demo-app/lib/src/common_widgets/error_message_widget.dart
@ -0,0 +1,55 @@
+import 'package:dio/dio.dart';
+import 'package:flutter/material.dart';
+import 'package:ri_go_demo/src/exceptions/api_exception.dart';
+
+import '../utils/localization.dart';
+import '../utils/logger.dart';
+
+//credits to Code with Andrea https://github.com/bizz84/starter_architecture_flutter_firebase/blob/master/lib/src/common_widgets/error_message_widget.dart
+
+/// Simple reusable widget to show errors to the user.
+class ErrorMessageWidget extends StatelessWidget {
+  const ErrorMessageWidget(this.error, {super.key});
+
+  /// Error object, might be a DioException.
+  final Object? error;
+  @override
+  Widget build(BuildContext context) {
+    return Text(
+      _pimpError(error, context.loc.error),
+      style:
+          Theme.of(context).textTheme.titleLarge!.copyWith(color: Colors.red),
+    );
+  }
+
+  String _pimpError(Object? error, String defaultStr) {
+    if (error == null) {
+      logger.d('ErrorMessageWidget - _pimpError - no error');
+      return defaultStr;
+    }
+    try {
+      final dioEx = error as DioException;
+      if (dioEx.response != null) {
+        final map = dioEx.response!.data as Map<String, dynamic>;
+        if (map.containsKey('detail')) {
+          return map['detail']! as String;
+        }
+      }
+    } catch (ex) {
+      logger.e(
+        'ErrorMessageWidget - _pimpError - could not extract info',
+        error: ex,
+      );
+    }
+    try {
+      final apiException = error as ApiException;
+      return 'status ${apiException.statusCode}: ${apiException.message}';
+    } catch (ex) {
+      logger.e(
+        'ErrorMessageWidget - _pimpError - could not extract message',
+        error: ex,
+      );
+    }
+    return defaultStr;
+  }
+}
--- a/learning/demo-app/lib/src/common_widgets/form_field_widget.dart
+++ b/learning/demo-app/lib/src/common_widgets/form_field_widget.dart
@ -0,0 +1,50 @@
+import 'package:flutter/material.dart';
+
+//similar from code with Andrea
+class FormFieldWidget extends StatelessWidget {
+  const FormFieldWidget({
+    required this.controller,
+    required this.labelText,
+    super.key,
+    this.keyboardType,
+    this.formFieldKey,
+    this.required = false,
+    this.initialValue = '',
+  });
+
+  final TextEditingController controller;
+  final String labelText;
+  final TextInputType? keyboardType;
+  final bool required;
+
+  final Key? formFieldKey;
+
+  final String initialValue;
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      children: [
+        Semantics(
+          label: labelText,
+          child: TextFormField(
+            key: formFieldKey,
+            controller: controller,
+            decoration: InputDecoration(
+              labelText: labelText,
+            ),
+            autocorrect: false,
+            textInputAction: TextInputAction.next,
+            keyboardType: keyboardType,
+            validator: (value) {
+              if (required && (value == null || value.isEmpty)) {
+                return ''; //context.loc.requiredField;
+              }
+              return null;
+            },
+          ),
+        ),
+      ],
+    );
+  }
+}
--- a/learning/demo-app/lib/src/common_widgets/primary_button.dart
+++ b/learning/demo-app/lib/src/common_widgets/primary_button.dart
@ -0,0 +1,45 @@
+import 'package:flutter/material.dart';
+
+// credits to Code with Andrea, https://github.com/bizz84/starter_architecture_flutter_firebase/blob/master/lib/src/common_widgets/primary_button.dart
+
+class PrimaryButton extends StatelessWidget {
+  const PrimaryButton({
+    required this.label,
+    required this.onPressed,
+    super.key,
+    this.isEnabled = true,
+    this.backgroundColor,
+    this.foregroundColor,
+  });
+  final VoidCallback? onPressed;
+  final String label;
+  final bool isEnabled;
+  final Color? backgroundColor;
+  final Color? foregroundColor;
+  @override
+  Widget build(BuildContext context) {
+    return Align(
+      alignment: Alignment.bottomCenter,
+      child: Padding(
+        padding: const EdgeInsets.all(12),
+        child: SizedBox(
+          height: 48,
+          child: ElevatedButton(
+            onPressed: isEnabled ? onPressed : null,
+            style: ElevatedButton.styleFrom(
+              backgroundColor:
+                  backgroundColor ?? Theme.of(context).colorScheme.primary,
+              foregroundColor:
+                  foregroundColor ?? Theme.of(context).colorScheme.onPrimary,
+            ),
+            child: Text(
+              label,
+              textAlign: TextAlign.center,
+              style: Theme.of(context).textTheme.titleLarge,
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}
--- a/learning/demo-app/lib/src/common_widgets/two_panel_widget.dart
+++ b/learning/demo-app/lib/src/common_widgets/two_panel_widget.dart
@ -0,0 +1,48 @@
+import 'package:flutter/material.dart';
+
+import '../constants/breakpoint.dart';
+
+class TwoPanelWidget extends StatelessWidget {
+  const TwoPanelWidget({
+    required this.firstPanel,
+    required this.secondPanel,
+    super.key,
+  });
+  final Widget firstPanel;
+  final Widget secondPanel;
+  @override
+  Widget build(BuildContext context) {
+    final screenSize = MediaQuery.of(context).size;
+    final isWideScreen = screenSize.width > Breakpoint.tablet;
+
+    if (isWideScreen) {
+      // Display master and detail side by side
+      return Row(
+        children: [
+          Expanded(
+            flex: 2,
+            child: firstPanel,
+          ),
+          Expanded(
+            flex: 2,
+            child: secondPanel,
+          ),
+        ],
+      );
+    } else {
+      // Display master and detail vertically
+      return Column(
+        children: [
+          Expanded(
+            flex: 2,
+            child: firstPanel,
+          ),
+          Expanded(
+            flex: 2,
+            child: secondPanel,
+          ),
+        ], // Display the first item initially
+      );
+    }
+  }
+}
--- a/learning/demo-app/lib/src/constants/api.dart
+++ b/learning/demo-app/lib/src/constants/api.dart
@ -0,0 +1,6 @@
+// https://api-generator.retool.com/grQMFP/crud-demo/
+abstract class Api {
+  static const String schema = 'https';
+  static const String host = 'api-generator.retool.com';
+  static const String path = 'grQMFP/crud-demo/';
+}
--- a/learning/demo-app/lib/src/constants/breakpoint.dart
+++ b/learning/demo-app/lib/src/constants/breakpoint.dart
@ -0,0 +1,3 @@
+class Breakpoint {
+  static const double tablet = 600;
+}
--- a/learning/demo-app/lib/src/constants/ui_constants.dart
+++ b/learning/demo-app/lib/src/constants/ui_constants.dart
@ -0,0 +1,5 @@
+abstract class UIConstants {
+  static const double minHitTargetHeight = 55;
+  static const double verticalItemSpace = 8;
+  static const double defaultPadding = 12;
+}
--- a/learning/demo-app/lib/src/exceptions/api_exception.dart
+++ b/learning/demo-app/lib/src/exceptions/api_exception.dart
@ -0,0 +1,8 @@
+class ApiException implements Exception {
+  ApiException(this.statusCode, this.message);
+  final int statusCode;
+  final String message;
+
+  @override
+  String toString() => message;
+}
--- a/learning/demo-app/lib/src/features/counter/presentation/counter_screen.dart
+++ b/learning/demo-app/lib/src/features/counter/presentation/counter_screen.dart
@ -0,0 +1,41 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../utils/localization.dart';
+import 'counter_screen_controller.dart';
+
+class CounterScreen extends ConsumerWidget {
+  const CounterScreen({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final state = ref.watch(counterProvider);
+    final controller = ref.read(counterProvider.notifier);
+
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
+        title: Text(context.loc.appTitle),
+      ),
+      body: Center(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: <Widget>[
+            Text(
+              context.loc.counterLabel,
+            ),
+            Text(
+              '$state',
+              style: Theme.of(context).textTheme.headlineMedium,
+            ),
+          ],
+        ),
+      ),
+      floatingActionButton: FloatingActionButton(
+        onPressed: controller.increment,
+        tooltip: context.loc.fabMainTooltip,
+        child: const Icon(Icons.add),
+      ),
+    );
+  }
+}
--- a/learning/demo-app/lib/src/features/counter/presentation/counter_screen_controller.dart
+++ b/learning/demo-app/lib/src/features/counter/presentation/counter_screen_controller.dart
@ -0,0 +1,25 @@
+
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+
+part 'counter_screen_controller.g.dart';
+
+
+/// Annotating a class by `@riverpod` defines a new shared 
+/// state for your application,
+/// accessible using the generated [counterProvider].
+/// This class is both responsible for initializing the state (through the 
+/// [build] method)
+/// and exposing ways to modify it (cf [increment]).
+@riverpod
+class Counter extends _$Counter {
+  /// Classes annotated by `@riverpod` **must** define a [build] function.
+  /// This function is expected to return the initial state of your 
+  /// shared state.
+  /// It is totally acceptable for this function to return a [Future] or 
+  /// [Stream] if you need to.
+  /// You can also freely define parameters on this method.
+  @override
+  int build() => 0;
+
+  void increment() => state++;
+}
--- a/learning/demo-app/lib/src/features/counter/presentation/counter_screen_controller.g.dart
+++ b/learning/demo-app/lib/src/features/counter/presentation/counter_screen_controller.g.dart
@ -0,0 +1,30 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'counter_screen_controller.dart';
+
+// **************************************************************************
+// RiverpodGenerator
+// **************************************************************************
+
+String _$counterHash() => r'4243b34530f53accfd9014a9f0e316fe304ada3e';
+
+/// Annotating a class by `@riverpod` defines a new shared
+/// state for your application,
+/// accessible using the generated [counterProvider].
+/// This class is both responsible for initializing the state (through the
+/// [build] method)
+/// and exposing ways to modify it (cf [increment]).
+///
+/// Copied from [Counter].
+@ProviderFor(Counter)
+final counterProvider = AutoDisposeNotifierProvider<Counter, int>.internal(
+  Counter.new,
+  name: r'counterProvider',
+  debugGetCreateSourceHash:
+      const bool.fromEnvironment('dart.vm.product') ? null : _$counterHash,
+  dependencies: null,
+  allTransitiveDependencies: null,
+);
+
+typedef _$Counter = AutoDisposeNotifier<int>;
+// ignore_for_file: unnecessary_raw_strings, subtype_of_sealed_class, invalid_use_of_internal_member, do_not_use_environment, prefer_const_constructors, public_member_api_docs, avoid_private_typedef_functions
--- a/learning/demo-app/lib/src/features/rest_crud_demo/data/people_repository.dart
+++ b/learning/demo-app/lib/src/features/rest_crud_demo/data/people_repository.dart
@ -0,0 +1,124 @@
+import 'dart:convert';
+
+import 'package:dio/dio.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+import '../../../constants/api.dart';
+import '../../../exceptions/api_exception.dart';
+import '../../../utils/dio_provider.dart';
+import '../../../utils/logger.dart';
+import '../domain/person.dart';
+
+part 'people_repository.g.dart';
+
+class PeopleRepository {
+  PeopleRepository({required this.dio});
+  final Dio dio;
+
+  String _getUrl({int? id}) {
+    final url =
+        Uri(scheme: Api.schema, host: Api.host, path: Api.path).toString();
+    if (id != null) {
+      return '$url$id';
+    } else {
+      return url;
+    }
+  }
+
+  Future<Person> getPersonById({required int id}) async {
+    final url = _getUrl(id: id);
+    // ignore: inference_failure_on_function_invocation
+    final response = await dio.get<String>(url);
+    if (response.statusCode == 200 && response.data != null) {
+      final person =
+          Person.fromJson(json.decode(response.data!) as Map<String, Object?>);
+      return person;
+    } else {
+      throw ApiException(
+        response.statusCode ?? -1,
+        'getPersonById ${response.statusCode}, data=${response.data}',
+      );
+    }
+  }
+
+  Future<List<Person>> getPeople() async {
+    logger.d('people_repository.getPeople');
+    final url = _getUrl();
+    final response = await dio.get<List<dynamic>>(url);
+    if (response.statusCode == 200 && response.data != null) {
+      final dataList = response.data!;
+      return dataList
+          .map(
+            (personJson) => Person.fromJson(personJson as Map<String, Object?>),
+          )
+          .toList();
+    } else {
+      throw ApiException(
+        response.statusCode ?? -1,
+        'getPeople ${response.statusCode}, data=${response.data}',
+      );
+    }
+  }
+
+  Future<Person> updatePerson({required Person person}) async {
+    final url = _getUrl(id: person.id);
+    final response = await dio.put<String>(url, data: person.toJson());
+    if (response.statusCode == 200 && response.data != null) {
+      final personUpdated =
+          Person.fromJson(json.decode(response.data!) as Map<String, Object?>);
+      return personUpdated;
+    } else {
+      throw ApiException(
+        response.statusCode ?? -1,
+        'updateOwner ${response.statusCode}, data=${response.data}',
+      );
+    }
+  }
+
+  Future<bool> deletePerson(int id) async {
+    final url = _getUrl(id: id);
+    final response = await dio.delete<String>(url);
+    if (response.statusCode == 200) {
+      return true;
+    } else {
+      throw ApiException(
+        response.statusCode ?? -1,
+        'deletePerson ${response.statusCode}, data=${response.data}',
+      );
+    }
+  }
+
+  Future<Person> savePerson({required Person person}) async {
+    final url = _getUrl();
+    // this api uses the id if it exists, hence in case of a post
+    // we make sure, there is no id
+    final response =
+        await dio.post<String>(url, data: person.toJsonWithoutId());
+    if (response.statusCode == 201 && response.data != null) {
+      final newPerson =
+          Person.fromJson(json.decode(response.data!) as Map<String, Object?>);
+      return newPerson;
+    } else {
+      throw ApiException(
+        response.statusCode ?? -1,
+        'savePerson ${response.statusCode}, data=${response.data}',
+      );
+    }
+  }
+}
+
+@riverpod
+PeopleRepository peopleRepository(PeopleRepositoryRef ref) =>
+    PeopleRepository(dio: ref.read(dioProvider));
+
+@riverpod
+Future<List<Person>> fetchPeople(FetchPeopleRef ref) async {
+  logger.d('people_repository.fetchPeople');
+  final repo = ref.read(peopleRepositoryProvider);
+  return repo.getPeople();
+}
+
+@riverpod
+Future<Person> fetchPersonById(FetchPersonByIdRef ref, int id) async {
+  final repo = ref.read(peopleRepositoryProvider);
+  return repo.getPersonById(id: id);
+}
--- a/learning/demo-app/lib/src/features/rest_crud_demo/data/people_repository.g.dart
+++ b/learning/demo-app/lib/src/features/rest_crud_demo/data/people_repository.g.dart
@ -0,0 +1,141 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'people_repository.dart';
+
+// **************************************************************************
+// RiverpodGenerator
+// **************************************************************************
+
+String _$peopleRepositoryHash() => r'd0e91e6cbf45120cbcd670b6cc99fe71a9d76429';
+
+/// See also [peopleRepository].
+@ProviderFor(peopleRepository)
+final peopleRepositoryProvider = AutoDisposeProvider<PeopleRepository>.internal(
+  peopleRepository,
+  name: r'peopleRepositoryProvider',
+  debugGetCreateSourceHash: const bool.fromEnvironment('dart.vm.product')
+      ? null
+      : _$peopleRepositoryHash,
+  dependencies: null,
+  allTransitiveDependencies: null,
+);
+
+typedef PeopleRepositoryRef = AutoDisposeProviderRef<PeopleRepository>;
+String _$fetchPeopleHash() => r'772e01d6c483daa24de83820a021601fa93618e7';
+
+/// See also [fetchPeople].
+@ProviderFor(fetchPeople)
+final fetchPeopleProvider = AutoDisposeFutureProvider<List<Person>>.internal(
+  fetchPeople,
+  name: r'fetchPeopleProvider',
+  debugGetCreateSourceHash:
+      const bool.fromEnvironment('dart.vm.product') ? null : _$fetchPeopleHash,
+  dependencies: null,
+  allTransitiveDependencies: null,
+);
+
+typedef FetchPeopleRef = AutoDisposeFutureProviderRef<List<Person>>;
+String _$fetchPersonByIdHash() => r'ab1560261f3491819dc88719e855f1c9b973ed21';
+
+/// Copied from Dart SDK
+class _SystemHash {
+  _SystemHash._();
+
+  static int combine(int hash, int value) {
+    // ignore: parameter_assignments
+    hash = 0x1fffffff & (hash + value);
+    // ignore: parameter_assignments
+    hash = 0x1fffffff & (hash + ((0x0007ffff & hash) << 10));
+    return hash ^ (hash >> 6);
+  }
+
+  static int finish(int hash) {
+    // ignore: parameter_assignments
+    hash = 0x1fffffff & (hash + ((0x03ffffff & hash) << 3));
+    // ignore: parameter_assignments
+    hash = hash ^ (hash >> 11);
+    return 0x1fffffff & (hash + ((0x00003fff & hash) << 15));
+  }
+}
+
+typedef FetchPersonByIdRef = AutoDisposeFutureProviderRef<Person>;
+
+/// See also [fetchPersonById].
+@ProviderFor(fetchPersonById)
+const fetchPersonByIdProvider = FetchPersonByIdFamily();
+
+/// See also [fetchPersonById].
+class FetchPersonByIdFamily extends Family<AsyncValue<Person>> {
+  /// See also [fetchPersonById].
+  const FetchPersonByIdFamily();
+
+  /// See also [fetchPersonById].
+  FetchPersonByIdProvider call(
+    int id,
+  ) {
+    return FetchPersonByIdProvider(
+      id,
+    );
+  }
+
+  @override
+  FetchPersonByIdProvider getProviderOverride(
+    covariant FetchPersonByIdProvider provider,
+  ) {
+    return call(
+      provider.id,
+    );
+  }
+
+  static const Iterable<ProviderOrFamily>? _dependencies = null;
+
+  @override
+  Iterable<ProviderOrFamily>? get dependencies => _dependencies;
+
+  static const Iterable<ProviderOrFamily>? _allTransitiveDependencies = null;
+
+  @override
+  Iterable<ProviderOrFamily>? get allTransitiveDependencies =>
+      _allTransitiveDependencies;
+
+  @override
+  String? get name => r'fetchPersonByIdProvider';
+}
+
+/// See also [fetchPersonById].
+class FetchPersonByIdProvider extends AutoDisposeFutureProvider<Person> {
+  /// See also [fetchPersonById].
+  FetchPersonByIdProvider(
+    this.id,
+  ) : super.internal(
+          (ref) => fetchPersonById(
+            ref,
+            id,
+          ),
+          from: fetchPersonByIdProvider,
+          name: r'fetchPersonByIdProvider',
+          debugGetCreateSourceHash:
+              const bool.fromEnvironment('dart.vm.product')
+                  ? null
+                  : _$fetchPersonByIdHash,
+          dependencies: FetchPersonByIdFamily._dependencies,
+          allTransitiveDependencies:
+              FetchPersonByIdFamily._allTransitiveDependencies,
+        );
+
+  final int id;
+
+  @override
+  bool operator ==(Object other) {
+    return other is FetchPersonByIdProvider && other.id == id;
+  }
+
+  @override
+  int get hashCode {
+    var hash = _SystemHash.combine(0, runtimeType.hashCode);
+    hash = _SystemHash.combine(hash, id.hashCode);
+
+    return _SystemHash.finish(hash);
+  }
+}
+// ignore_for_file: unnecessary_raw_strings, subtype_of_sealed_class, invalid_use_of_internal_member, do_not_use_environment, prefer_const_constructors, public_member_api_docs, avoid_private_typedef_functions
--- a/learning/demo-app/lib/src/features/rest_crud_demo/domain/person.dart
+++ b/learning/demo-app/lib/src/features/rest_crud_demo/domain/person.dart
@ -0,0 +1,37 @@
+import 'dart:convert';
+
+import 'package:flutter/foundation.dart';
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'person.freezed.dart';
+part 'person.g.dart';
+
+@freezed
+class Person with _$Person {
+  const factory Person({
+    required int id,
+    required String name,
+    required String imageUrl,
+  }) = _Person;
+
+  factory Person.fromJson(Map<String, Object?> json) => _$PersonFromJson(json);
+}
+
+extension JsonWithoutId on Person {
+  String toJsonWithoutId() {
+    final map = toJson();
+    // ignore: cascade_invocations  //remove returns the removed field!, cascade_invocations
+    map.remove('id');
+    return json.encode(map);
+  }
+}
+
+// String toJsonWithoutId(Person p) {
+//   var a = p.toJson();
+//   var b = a.remove('id');
+//   var c = json.encode(a);
+
+//   // final map = p.toJson().remove('id');
+//   // return json.encode(map);
+//   return c;
+// }
--- a/learning/demo-app/lib/src/features/rest_crud_demo/domain/person.freezed.dart
+++ b/learning/demo-app/lib/src/features/rest_crud_demo/domain/person.freezed.dart
@ -0,0 +1,192 @@
+// coverage:ignore-file
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint
+// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target, unnecessary_question_mark
+
+part of 'person.dart';
+
+// **************************************************************************
+// FreezedGenerator
+// **************************************************************************
+
+T _$identity<T>(T value) => value;
+
+final _privateConstructorUsedError = UnsupportedError(
+    'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#custom-getters-and-methods');
+
+Person _$PersonFromJson(Map<String, dynamic> json) {
+  return _Person.fromJson(json);
+}
+
+/// @nodoc
+mixin _$Person {
+  int get id => throw _privateConstructorUsedError;
+  String get name => throw _privateConstructorUsedError;
+  String get imageUrl => throw _privateConstructorUsedError;
+
+  Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
+  @JsonKey(ignore: true)
+  $PersonCopyWith<Person> get copyWith => throw _privateConstructorUsedError;
+}
+
+/// @nodoc
+abstract class $PersonCopyWith<$Res> {
+  factory $PersonCopyWith(Person value, $Res Function(Person) then) =
+      _$PersonCopyWithImpl<$Res, Person>;
+  @useResult
+  $Res call({int id, String name, String imageUrl});
+}
+
+/// @nodoc
+class _$PersonCopyWithImpl<$Res, $Val extends Person>
+    implements $PersonCopyWith<$Res> {
+  _$PersonCopyWithImpl(this._value, this._then);
+
+  // ignore: unused_field
+  final $Val _value;
+  // ignore: unused_field
+  final $Res Function($Val) _then;
+
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? id = null,
+    Object? name = null,
+    Object? imageUrl = null,
+  }) {
+    return _then(_value.copyWith(
+      id: null == id
+          ? _value.id
+          : id // ignore: cast_nullable_to_non_nullable
+              as int,
+      name: null == name
+          ? _value.name
+          : name // ignore: cast_nullable_to_non_nullable
+              as String,
+      imageUrl: null == imageUrl
+          ? _value.imageUrl
+          : imageUrl // ignore: cast_nullable_to_non_nullable
+              as String,
+    ) as $Val);
+  }
+}
+
+/// @nodoc
+abstract class _$$_PersonCopyWith<$Res> implements $PersonCopyWith<$Res> {
+  factory _$$_PersonCopyWith(_$_Person value, $Res Function(_$_Person) then) =
+      __$$_PersonCopyWithImpl<$Res>;
+  @override
+  @useResult
+  $Res call({int id, String name, String imageUrl});
+}
+
+/// @nodoc
+class __$$_PersonCopyWithImpl<$Res>
+    extends _$PersonCopyWithImpl<$Res, _$_Person>
+    implements _$$_PersonCopyWith<$Res> {
+  __$$_PersonCopyWithImpl(_$_Person _value, $Res Function(_$_Person) _then)
+      : super(_value, _then);
+
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? id = null,
+    Object? name = null,
+    Object? imageUrl = null,
+  }) {
+    return _then(_$_Person(
+      id: null == id
+          ? _value.id
+          : id // ignore: cast_nullable_to_non_nullable
+              as int,
+      name: null == name
+          ? _value.name
+          : name // ignore: cast_nullable_to_non_nullable
+              as String,
+      imageUrl: null == imageUrl
+          ? _value.imageUrl
+          : imageUrl // ignore: cast_nullable_to_non_nullable
+              as String,
+    ));
+  }
+}
+
+/// @nodoc
+@JsonSerializable()
+class _$_Person with DiagnosticableTreeMixin implements _Person {
+  const _$_Person(
+      {required this.id, required this.name, required this.imageUrl});
+
+  factory _$_Person.fromJson(Map<String, dynamic> json) =>
+      _$$_PersonFromJson(json);
+
+  @override
+  final int id;
+  @override
+  final String name;
+  @override
+  final String imageUrl;
+
+  @override
+  String toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) {
+    return 'Person(id: $id, name: $name, imageUrl: $imageUrl)';
+  }
+
+  @override
+  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
+    super.debugFillProperties(properties);
+    properties
+      ..add(DiagnosticsProperty('type', 'Person'))
+      ..add(DiagnosticsProperty('id', id))
+      ..add(DiagnosticsProperty('name', name))
+      ..add(DiagnosticsProperty('imageUrl', imageUrl));
+  }
+
+  @override
+  bool operator ==(dynamic other) {
+    return identical(this, other) ||
+        (other.runtimeType == runtimeType &&
+            other is _$_Person &&
+            (identical(other.id, id) || other.id == id) &&
+            (identical(other.name, name) || other.name == name) &&
+            (identical(other.imageUrl, imageUrl) ||
+                other.imageUrl == imageUrl));
+  }
+
+  @JsonKey(ignore: true)
+  @override
+  int get hashCode => Object.hash(runtimeType, id, name, imageUrl);
+
+  @JsonKey(ignore: true)
+  @override
+  @pragma('vm:prefer-inline')
+  _$$_PersonCopyWith<_$_Person> get copyWith =>
+      __$$_PersonCopyWithImpl<_$_Person>(this, _$identity);
+
+  @override
+  Map<String, dynamic> toJson() {
+    return _$$_PersonToJson(
+      this,
+    );
+  }
+}
+
+abstract class _Person implements Person {
+  const factory _Person(
+      {required final int id,
+      required final String name,
+      required final String imageUrl}) = _$_Person;
+
+  factory _Person.fromJson(Map<String, dynamic> json) = _$_Person.fromJson;
+
+  @override
+  int get id;
+  @override
+  String get name;
+  @override
+  String get imageUrl;
+  @override
+  @JsonKey(ignore: true)
+  _$$_PersonCopyWith<_$_Person> get copyWith =>
+      throw _privateConstructorUsedError;
+}
--- a/learning/demo-app/lib/src/features/rest_crud_demo/domain/person.g.dart
+++ b/learning/demo-app/lib/src/features/rest_crud_demo/domain/person.g.dart
@ -0,0 +1,19 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'person.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+_$_Person _$$_PersonFromJson(Map<String, dynamic> json) => _$_Person(
+      id: json['id'] as int,
+      name: json['name'] as String,
+      imageUrl: json['imageUrl'] as String,
+    );
+
+Map<String, dynamic> _$$_PersonToJson(_$_Person instance) => <String, dynamic>{
+      'id': instance.id,
+      'name': instance.name,
+      'imageUrl': instance.imageUrl,
+    };
--- a/learning/demo-app/lib/src/features/rest_crud_demo/presentation/details_screen.dart
+++ b/learning/demo-app/lib/src/features/rest_crud_demo/presentation/details_screen.dart
@ -0,0 +1,74 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:gap/gap.dart';
+
+import '../../../common_widgets/async_value_widget.dart';
+import '../../../constants/ui_constants.dart';
+import '../../../utils/localization.dart';
+import '../../../utils/logger.dart';
+import '../data/people_repository.dart';
+import '../domain/person.dart';
+
+class DetailsScreen extends ConsumerWidget {
+  const DetailsScreen({super.key, this.id, this.person});
+  final int? id;
+  final Person? person;
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    if (id == null) {
+      return Scaffold(
+        appBar: AppBar(
+          title: Text(context.loc.details),
+        ),
+        body: Text(context.loc.error),
+      );
+    } else if (person != null) {
+      return DetailsScreenPlainWidget(person!);
+    } else {
+      // e.g. navigated to details by bookmark
+      return AsyncValueWidget<Person>(
+        value: ref.watch(fetchPersonByIdProvider(id!)),
+        data: DetailsScreenPlainWidget.new,
+      );
+    }
+  }
+}
+
+class DetailsScreenPlainWidget extends StatelessWidget {
+  const DetailsScreenPlainWidget(this.person, {super.key});
+  final Person person;
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(context.loc.details),
+      ),
+      body: Padding(
+        padding: const EdgeInsets.all(UIConstants.defaultPadding),
+        child: Column(
+          children: [
+            Text('hi ${person.name}'),
+            const Gap(UIConstants.verticalItemSpace),
+            if (person.imageUrl.startsWith('http'))
+              Expanded(
+                child: Image(
+                  image: NetworkImage(person.imageUrl),
+                  errorBuilder: (context, error, stackTrace) {
+                    logger.d(
+                      'DetailsScreen - image, url=${person.imageUrl}',
+                      error: error,
+                      stackTrace: stackTrace,
+                    );
+                    return Text(person.imageUrl);
+                  },
+                ),
+              )
+            else
+              Text(person.imageUrl),
+          ],
+        ),
+      ),
+    );
+  }
+}
--- a/learning/demo-app/lib/src/features/rest_crud_demo/presentation/edit_person_controller.dart
+++ b/learning/demo-app/lib/src/features/rest_crud_demo/presentation/edit_person_controller.dart
@ -0,0 +1,81 @@
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+
+import '../../../utils/logger.dart';
+import '../data/people_repository.dart';
+import '../domain/person.dart';
+
+part 'edit_person_controller.g.dart';
+
+// in some cases it might be good to store the current selected item in a
+// separate provider
+// final currentPersonProvider = StateProvider<Person?>((ref) {
+//   return null;
+// });
+
+@riverpod
+class EditPersonController extends _$EditPersonController {
+  @override
+  FutureOr<Person?> build() {
+    ref.onDispose(
+      () => logger.i('EditPersonController ----- dispose controller -----'),
+    );
+    state = const AsyncData(null);
+    return state.value;
+  }
+
+  //for non string-based setters and hence input fields without own controllers
+  //use setters like
+  // void setCheckboxField(bool value) {
+  //   state = AsyncData(state.value!.copyWith(isBossy: value));
+  // }
+
+  /// Show the form with the values given by [person].
+  void editPerson(Person person) {
+    state = AsyncData(person);
+  }
+
+  /// Show the form with empty fields, ready to create a new person.
+  void newPerson() {
+    state = const AsyncData(Person(id: -1, name: '', imageUrl: ''));
+  }
+
+  Future<void> delete() async {
+    if (state.value == null || state.value!.id < 0) {
+      return;
+    }
+    state = const AsyncLoading<Person?>();
+    try {
+      final repo = ref.read(peopleRepositoryProvider);
+      await repo.deletePerson(state.value!.id);
+      //this provider does not know this change, hence we need to force a
+      //refresh by invalidating it
+      ref.invalidate(fetchPeopleProvider);
+      state = const AsyncData(null);
+    } catch (error) {
+      state = AsyncError(error, StackTrace.current);
+    }
+  }
+
+  Future<void> save({required String name, required String imageUrl}) async {
+    if (name.isEmpty || state.value == null) {
+      return;
+    }
+    // use copywith to keep id
+    final editedPerson = state.value!.copyWith(name: name, imageUrl: imageUrl);
+    // to keep changes of the form fields, even if we may have an error
+    state = AsyncData(editedPerson);
+    state = const AsyncLoading<Person?>();
+    try {
+      final repo = ref.read(peopleRepositoryProvider);
+      if (editedPerson.id < 0) {
+        await repo.savePerson(person: editedPerson);
+      } else {
+        await repo.updatePerson(person: editedPerson);
+      }
+      ref.invalidate(fetchPeopleProvider);
+      state = const AsyncData(null);
+    } catch (error) {
+      state = AsyncError<Person?>(error, StackTrace.current);
+    }
+  }
+}
--- a/learning/demo-app/lib/src/features/rest_crud_demo/presentation/edit_person_controller.g.dart
+++ b/learning/demo-app/lib/src/features/rest_crud_demo/presentation/edit_person_controller.g.dart
@ -0,0 +1,26 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'edit_person_controller.dart';
+
+// **************************************************************************
+// RiverpodGenerator
+// **************************************************************************
+
+String _$editPersonControllerHash() =>
+    r'7c656c78c7d8c60e746ec6bd7ad4e089f2f3fcac';
+
+/// See also [EditPersonController].
+@ProviderFor(EditPersonController)
+final editPersonControllerProvider =
+    AutoDisposeAsyncNotifierProvider<EditPersonController, Person?>.internal(
+  EditPersonController.new,
+  name: r'editPersonControllerProvider',
+  debugGetCreateSourceHash: const bool.fromEnvironment('dart.vm.product')
+      ? null
+      : _$editPersonControllerHash,
+  dependencies: null,
+  allTransitiveDependencies: null,
+);
+
+typedef _$EditPersonController = AutoDisposeAsyncNotifier<Person?>;
+// ignore_for_file: unnecessary_raw_strings, subtype_of_sealed_class, invalid_use_of_internal_member, do_not_use_environment, prefer_const_constructors, public_member_api_docs, avoid_private_typedef_functions
--- a/learning/demo-app/lib/src/features/rest_crud_demo/presentation/edit_person_form.dart
+++ b/learning/demo-app/lib/src/features/rest_crud_demo/presentation/edit_person_form.dart
@ -0,0 +1,106 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:gap/gap.dart';
+
+import '../../../common_widgets/error_message_widget.dart';
+import '../../../common_widgets/form_field_widget.dart';
+import '../../../common_widgets/primary_button.dart';
+import '../../../constants/ui_constants.dart';
+import '../../../utils/localization.dart';
+import 'edit_person_controller.dart';
+
+class EditPersonForm extends ConsumerStatefulWidget {
+  const EditPersonForm({super.key});
+
+  @override
+  ConsumerState<EditPersonForm> createState() => _EditPersonFormState();
+}
+
+class _EditPersonFormState extends ConsumerState<EditPersonForm> {
+  final _formKey = GlobalKey<FormState>();
+  static const Key _nameKey = Key('name');
+  static const Key _imageUrlKey = Key('image_url');
+  final _nameController = TextEditingController();
+  final _imageUrlController = TextEditingController();
+  late final EditPersonController _controller;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = ref.read(editPersonControllerProvider.notifier);
+  }
+
+  @override
+  void dispose() {
+    _nameController.dispose();
+    _imageUrlController.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final state = ref.watch(editPersonControllerProvider);
+    if (state.isLoading) {
+      return const CircularProgressIndicator();
+    }
+    if (state.value == null) {
+      return Container();
+    } else {
+      _nameController.text = state.value!.name;
+      _imageUrlController.text = state.value!.imageUrl;
+      return Padding(
+        padding: const EdgeInsets.all(UIConstants.defaultPadding),
+        child: Form(
+          key: _formKey,
+          child: Column(
+            children: [
+              //put here to have both visible, the error and the form
+              if (state.hasError) ErrorMessageWidget(state.error),
+              FormFieldWidget(
+                formFieldKey: _nameKey,
+                controller: _nameController,
+                labelText: context.loc.labelName,
+                required: true,
+              ),
+              const Gap(UIConstants.verticalItemSpace),
+              FormFieldWidget(
+                formFieldKey: _imageUrlKey,
+                controller: _imageUrlController,
+                labelText: context.loc.labelImageUrl,
+              ),
+              const Gap(UIConstants.verticalItemSpace),
+              Row(
+                children: [
+                  PrimaryButton(
+                    label: context.loc.delete,
+                    backgroundColor: Theme.of(context).colorScheme.error,
+                    foregroundColor: Theme.of(context).colorScheme.onError,
+                    onPressed:
+                        state.isLoading ? null : () => {_controller.delete()},
+                    isEnabled: state.value!.id > 0,
+                  ),
+                  Expanded(
+                    child: PrimaryButton(
+                      label: context.loc.save,
+                      onPressed: state.isLoading
+                          ? null
+                          : () => {
+                                if (_formKey.currentState!.validate())
+                                  {
+                                    _controller.save(
+                                      name: _nameController.text,
+                                      imageUrl: _imageUrlController.text,
+                                    ),
+                                  },
+                              },
+                    ),
+                  ),
+                ],
+              ),
+            ],
+          ),
+        ),
+      );
+    }
+  }
+}
--- a/learning/demo-app/lib/src/features/rest_crud_demo/presentation/people_screen.dart
+++ b/learning/demo-app/lib/src/features/rest_crud_demo/presentation/people_screen.dart
@ -0,0 +1,82 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:go_router/go_router.dart';
+
+import '../../../common_widgets/async_value_widget.dart';
+import '../../../common_widgets/two_panel_widget.dart';
+import '../../../routing/app_router.dart';
+import '../../../utils/localization.dart';
+import '../data/people_repository.dart';
+import '../domain/person.dart';
+import 'edit_person_controller.dart';
+import 'edit_person_form.dart';
+
+class PeopleScreen extends ConsumerWidget {
+  const PeopleScreen({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
+        title: Text(context.loc.appTitle),
+      ),
+      body: TwoPanelWidget(
+        firstPanel: RefreshIndicator(
+          //pull to refresh
+          onRefresh: () {
+            ref.invalidate(fetchPeopleProvider);
+            return ref.read(fetchPeopleProvider.future);
+          },
+          child: AsyncValueWidget<List<Person>>(
+            value: ref.watch(fetchPeopleProvider),
+            data: (people) => people.isEmpty
+                ? Center(
+                    child: Text(
+                      context.loc.noItems,
+                      style: Theme.of(context).textTheme.displaySmall,
+                      textAlign: TextAlign.center,
+                    ),
+                  )
+                : ListView.builder(
+                    itemCount: people.length,
+                    itemBuilder: (context, index) {
+                      return ListTile(
+                        title: Text(people[index].name),
+                        onTap: () {
+                          context.goNamed(
+                            SubRoutes.details.name,
+                            pathParameters: {
+                              Parameter.id.name: people[index].id.toString(),
+                            },
+                            extra: people[index],
+                          );
+                        },
+                        trailing: IconButton(
+                          icon: const Icon(Icons.edit),
+                          tooltip: 'Edit '.hardcoded + people[index].name,
+                          onPressed: () {
+                            ref
+                                .read(
+                                  editPersonControllerProvider.notifier,
+                                )
+                                .editPerson(people[index]);
+                          },
+                        ),
+                      );
+                    },
+                  ),
+          ),
+        ),
+        secondPanel: const EditPersonForm(),
+      ),
+      floatingActionButton: FloatingActionButton(
+        onPressed: () {
+          ref.read(editPersonControllerProvider.notifier).newPerson();
+        },
+        tooltip: 'click to add a new person'.hardcoded,
+        child: const Icon(Icons.add),
+      ),
+    );
+  }
+}
--- a/learning/demo-app/lib/src/routing/app_router.dart
+++ b/learning/demo-app/lib/src/routing/app_router.dart
@ -0,0 +1,109 @@
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+
+import '../features/counter/presentation/counter_screen.dart';
+import '../features/rest_crud_demo/domain/person.dart';
+import '../features/rest_crud_demo/presentation/details_screen.dart';
+import '../features/rest_crud_demo/presentation/people_screen.dart';
+import 'scaffold_with_navigation.dart';
+
+part 'app_router.g.dart';
+
+// general ideas on navigation see https://m2.material.io/design/navigation/understanding-navigation.html#forward-navigation
+
+// shell routes, appear in the bottom navigation
+// see https://pub.dev/documentation/go_router/latest/go_router/ShellRoute-class.html
+enum TopLevelDestinations { people, counter }
+
+// GlobalKey is a factory, hence each call creates a key
+//this is root, even if it navigates to people, it needs a separate key!!!
+final _rootNavigatorKey = GlobalKey<NavigatorState>();
+final _peopleNavigatorKey =
+    GlobalKey<NavigatorState>(debugLabel: TopLevelDestinations.people.name);
+final _counterNavigatorKey =
+    GlobalKey<NavigatorState>(debugLabel: TopLevelDestinations.counter.name);
+
+// other destinations, reachable from a top level destination
+enum SubRoutes { details }
+
+enum Parameter { id }
+
+//https://github.com/flutter/packages/blob/main/packages/go_router/example/lib/stateful_shell_route.dart
+
+@Riverpod(keepAlive: true)
+GoRouter goRouter(GoRouterRef ref) {
+  return GoRouter(
+    initialLocation: '/${TopLevelDestinations.people.name}',
+    navigatorKey: _rootNavigatorKey,
+    debugLogDiagnostics: true,
+    routes: [
+      // Stateful navigation based on:
+      // https://github.com/flutter/packages/blob/main/packages/go_router/example/lib/stateful_shell_route.dart
+      StatefulShellRoute.indexedStack(
+        builder: (context, state, navigationShell) {
+          return ScaffoldWithNavigation(navigationShell: navigationShell);
+        },
+        branches: [
+          StatefulShellBranch(
+            navigatorKey: _peopleNavigatorKey,
+            routes: [
+              // base route people
+              GoRoute(
+                path: '/${TopLevelDestinations.people.name}', // path: /people
+                name: TopLevelDestinations.people.name,
+                pageBuilder: (context, state) => NoTransitionPage(
+                  key: state.pageKey,
+                  child: const PeopleScreen(),
+                ),
+                routes: <RouteBase>[
+                  // The details screen to display stacked on navigator of the
+                  // first tab. This will cover screen A but not the application
+                  // shell (bottom navigation bar).
+                  GoRoute(
+                    path: '${SubRoutes.details.name}/:${Parameter.id.name}',
+                    name: SubRoutes.details.name,
+                    builder: (BuildContext context, GoRouterState state) {
+                      // alternatively use https://pub.dev/documentation/go_router/latest/topics/Type-safe%20routes-topic.html
+                      final id =
+                          int.parse(state.pathParameters[Parameter.id.name]!);
+                      final person = _extractPersonFromExtra(state.extra);
+                      return DetailsScreen(id: id, person: person);
+                    },
+                  ),
+                ],
+              ),
+            ],
+          ),
+          StatefulShellBranch(
+            navigatorKey: _counterNavigatorKey,
+            routes: [
+              GoRoute(
+                path: '/${TopLevelDestinations.counter.name}',
+                name: TopLevelDestinations.counter.name,
+                pageBuilder: (context, state) => NoTransitionPage(
+                  key: state.pageKey,
+                  child: const CounterScreen(),
+                ),
+              ),
+            ],
+          ),
+        ],
+      ),
+    ],
+  );
+}
+
+Person? _extractPersonFromExtra(Object? extra) {
+  return extra == null
+      ? null
+      : extra is Person
+          ? extra
+          : extra is Map // if you come back from bottom navigation, e.g. look
+              // at details of a person, go to counter via bottom navigation,
+              // use bottom navigation to go to people/home
+              ? Person.fromJson(
+                  extra as Map<String, Object?>,
+                )
+              : null;
+}
--- a/learning/demo-app/lib/src/routing/app_router.g.dart
+++ b/learning/demo-app/lib/src/routing/app_router.g.dart
@ -0,0 +1,23 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'app_router.dart';
+
+// **************************************************************************
+// RiverpodGenerator
+// **************************************************************************
+
+String _$goRouterHash() => r'caf38f1ae54f10aea6450bd6fc62dae849543827';
+
+/// See also [goRouter].
+@ProviderFor(goRouter)
+final goRouterProvider = Provider<GoRouter>.internal(
+  goRouter,
+  name: r'goRouterProvider',
+  debugGetCreateSourceHash:
+      const bool.fromEnvironment('dart.vm.product') ? null : _$goRouterHash,
+  dependencies: null,
+  allTransitiveDependencies: null,
+);
+
+typedef GoRouterRef = ProviderRef<GoRouter>;
+// ignore_for_file: unnecessary_raw_strings, subtype_of_sealed_class, invalid_use_of_internal_member, do_not_use_environment, prefer_const_constructors, public_member_api_docs, avoid_private_typedef_functions
--- a/learning/demo-app/lib/src/routing/scaffold_with_navigation.dart
+++ b/learning/demo-app/lib/src/routing/scaffold_with_navigation.dart
@ -0,0 +1,133 @@
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+
+import '../constants/breakpoint.dart';
+import '../utils/localization.dart';
+
+// see https://github.com/flutter/packages/blob/main/packages/go_router/example/lib/stateful_shell_route.dart
+// and https://github.com/bizz84/tmdb_movie_app_riverpod/blob/main/lib/src/routing/scaffold_with_nested_navigation.dart
+class NavigationItem {
+  NavigationItem({required this.icon, required this.selectedIcon});
+  final IconData icon;
+  final IconData selectedIcon;
+}
+
+final _navigationList = (
+  people: NavigationItem(icon: Icons.home_outlined, selectedIcon: Icons.home),
+  counter: NavigationItem(
+    icon: Icons.plus_one_outlined,
+    selectedIcon: Icons.plus_one,
+  ),
+);
+
+class ScaffoldWithNavigation extends StatelessWidget {
+  const ScaffoldWithNavigation({
+    required this.navigationShell,
+    Key? key,
+  }) : super(key: key ?? const ValueKey('ScaffoldWithNavigation'));
+  final StatefulNavigationShell navigationShell;
+
+  void _goBranch(int index) {
+    navigationShell.goBranch(
+      index,
+      initialLocation: index == navigationShell.currentIndex,
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final size = MediaQuery.sizeOf(context);
+    if (size.width < Breakpoint.tablet) {
+      return ScaffoldWithNavigationBar(
+        body: navigationShell,
+        currentIndex: navigationShell.currentIndex,
+        onDestinationSelected: _goBranch,
+      );
+    } else {
+      return ScaffoldWithNavigationRail(
+        body: navigationShell,
+        currentIndex: navigationShell.currentIndex,
+        onDestinationSelected: _goBranch,
+      );
+    }
+  }
+}
+
+class ScaffoldWithNavigationBar extends StatelessWidget {
+  const ScaffoldWithNavigationBar({
+    required this.body,
+    required this.currentIndex,
+    required this.onDestinationSelected,
+    super.key,
+  });
+  final Widget body;
+  final int currentIndex;
+  final ValueChanged<int> onDestinationSelected;
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: body,
+      bottomNavigationBar: NavigationBar(
+        selectedIndex: currentIndex,
+        destinations: [
+          NavigationDestination(
+            icon: Icon(_navigationList.people.icon),
+            selectedIcon: Icon(_navigationList.people.selectedIcon),
+            label: context.loc.home,
+          ),
+          NavigationDestination(
+            icon: Icon(_navigationList.counter.icon),
+            selectedIcon: Icon(_navigationList.counter.selectedIcon),
+            label: context.loc.counter,
+          ),
+        ],
+        onDestinationSelected: onDestinationSelected,
+      ),
+    );
+  }
+}
+
+class ScaffoldWithNavigationRail extends StatelessWidget {
+  const ScaffoldWithNavigationRail({
+    required this.body,
+    required this.currentIndex,
+    required this.onDestinationSelected,
+    super.key,
+  });
+  final Widget body;
+  final int currentIndex;
+  final ValueChanged<int> onDestinationSelected;
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: Row(
+        children: [
+          NavigationRail(
+            selectedIndex: currentIndex,
+            onDestinationSelected: onDestinationSelected,
+            labelType: NavigationRailLabelType.all,
+            destinations: <NavigationRailDestination>[
+              NavigationRailDestination(
+                icon: Icon(_navigationList.people.icon),
+                selectedIcon: Icon(_navigationList.people.selectedIcon),
+                label: Text(context.loc.home),
+              ),
+              NavigationRailDestination(
+                icon: Icon(_navigationList.counter.icon),
+                selectedIcon: Icon(_navigationList.counter.selectedIcon),
+                label: Text(context.loc.counter),
+              ),
+            ],
+          ),
+          const VerticalDivider(thickness: 1, width: 1),
+          // This is the main content.
+          Expanded(
+            child: body,
+          ),
+        ],
+      ),
+    );
+  }
+}
--- a/learning/demo-app/lib/src/utils/dio_provider.dart
+++ b/learning/demo-app/lib/src/utils/dio_provider.dart
@ -0,0 +1,18 @@
+import 'package:dio/dio.dart';
+import 'package:pretty_dio_logger/pretty_dio_logger.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+
+part 'dio_provider.g.dart';
+
+@riverpod
+Dio dio(DioRef ref) {
+  final dio = Dio();
+  dio.interceptors.add(
+    PrettyDioLogger(
+      requestHeader: true,
+      responseBody: false,
+      responseHeader: true,
+    ),
+  );
+  return dio;
+}
--- a/learning/demo-app/lib/src/utils/dio_provider.g.dart
+++ b/learning/demo-app/lib/src/utils/dio_provider.g.dart
@ -0,0 +1,23 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'dio_provider.dart';
+
+// **************************************************************************
+// RiverpodGenerator
+// **************************************************************************
+
+String _$dioHash() => r'50bc684111bbcb930ccaac200da3a7ad761e689b';
+
+/// See also [dio].
+@ProviderFor(dio)
+final dioProvider = AutoDisposeProvider<Dio>.internal(
+  dio,
+  name: r'dioProvider',
+  debugGetCreateSourceHash:
+      const bool.fromEnvironment('dart.vm.product') ? null : _$dioHash,
+  dependencies: null,
+  allTransitiveDependencies: null,
+);
+
+typedef DioRef = AutoDisposeProviderRef<Dio>;
+// ignore_for_file: unnecessary_raw_strings, subtype_of_sealed_class, invalid_use_of_internal_member, do_not_use_environment, prefer_const_constructors, public_member_api_docs, avoid_private_typedef_functions
--- a/learning/demo-app/lib/src/utils/localization.dart
+++ b/learning/demo-app/lib/src/utils/localization.dart
@ -0,0 +1,14 @@
+import 'package:flutter/widgets.dart';
+import 'package:flutter_gen/gen_l10n/app_localizations.dart';
+
+/// A simple placeholder that can be used to search all the hardcoded strings
+/// in the code (useful to identify strings that need to be localized).
+/// thanks to https://github.com/bizz84/starter_architecture_flutter_firebase/blob/master/lib/src/localization/string_hardcoded.dart
+extension StringHardcoded on String {
+  String get hardcoded => this;
+}
+
+//thanks to https://codewithandrea.com/articles/flutter-localization-build-context-extension/
+extension LocalizedBuildContext on BuildContext {
+  AppLocalizations get loc => AppLocalizations.of(this);
+}
--- a/learning/demo-app/lib/src/utils/logger.dart
+++ b/learning/demo-app/lib/src/utils/logger.dart
@ -0,0 +1,13 @@
+import 'package:logger/logger.dart';
+
+const Level loggerLevel = Level.trace;
+
+/// Logger for the app.
+Logger logger = Logger(
+  printer: PrettyPrinter(
+    methodCount: 1,
+    errorMethodCount: 5,
+    lineLength: 90,
+  ),
+  level: loggerLevel,
+);
--- a/learning/demo-app/linux/.gitignore
+++ b/learning/demo-app/linux/.gitignore
@ -0,0 +1 @@
+flutter/ephemeral
--- a/learning/demo-app/linux/CMakeLists.txt
+++ b/learning/demo-app/linux/CMakeLists.txt
@ -0,0 +1,145 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.10)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "ri_go_demo")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "com.example.ri_go_demo")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Define the application target. To change its name, change BINARY_NAME above,
+# not the value here, or `flutter run` will no longer work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
--- a/Show more
+++ b/Show more