Added Flutter Class 2 resources

Android/2021_11_20_FlutterClass-2/README.md

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+# Flutter Development Class - II
+
+## Get the Presentation used in class: [Here](Flutter_Class_2.pdf)
+
+## Get the Class recording: [Here](https://drive.google.com/file/d/1rzouyz0ORiX3Lz0XKuMup-hnnORlAa2G/view?usp=sharing)
+
+#### Nov 20, 2021
+
+<div align="center"><img src="../Flutter-Logo.png" alt="Flutter logo" height=150/></div>
+
+<hr>
+
+## Class coverage:
+
+1. How stateful widget works?
+2. How to draw a widget tree?
+3. How can you layout a widget?
+4. What is the difference between a responsive app and an adaptive app?
+5. How to build a responsive app?
+6. How to build an adaptive app? <i>(skipped)</i>
+7. How Navigation works in Flutter?
+8. Some examples:
+    1. An app demonstrating Lifecycle of Stateful Widget in Flutter. [Find here](stateful_lifecycle).
+    2. An app with a homescreen navigating to following demos:
+        - Showing a hierarchy of `Row` and `Column` widgets.
+        - Showing a hierarchy of `Row` and `Column` and `Image` widgets.
+        - Showing use of `LayoutBuilder` widget.
+        - Showing use of `MediaQuery` widget.
+        - The homescreen itself shows unnamed route navigation.
+
+        [Find here](flutter_class_2).
+    3. A simple app demonstrating named routing. [Find here](named_nav).
+
+## More Content:
+
+- [Flutter website](https://flutter.dev/).
+- The awesome [Flutter documentation](https://flutter.dev/docs/get-started/install). Navigate the website using the left sidebar.
+- [Flutter Cookbook](https://docs.flutter.dev/cookbook)
+
+## Homework:
+
+Explore the following links and learn:
+1. [Hero Animations](https://flutter.dev/docs/cookbook/navigation/hero-animations)
+2. [Adding assets and images](https://flutter.dev/docs/development/ui/assets-and-images)
+3. [Diaplay images from internet](https://flutter.dev/docs/cookbook/images/network-image)
+4. [Fade images with placeholder](https://flutter.dev/docs/cookbook/images/fading-in-images)
+5. [Caching images](https://flutter.dev/docs/cookbook/images/cached-images)
+6. [Long lists (lazy loading)](https://flutter.dev/docs/cookbook/lists/long-lists)
+7. [Floating Appbar](https://flutter.dev/docs/cookbook/lists/floating-app-bar)
+8. [Forms](https://flutter.dev/docs/cookbook/forms)
+9. Explore using Firebase Databases/Authentication in Flutter.
+
+<hr>
+
+You can find more links, reading resources and contacts to coordinators [here](../).

Android/2021_11_20_FlutterClass-2/flutter_class_2/.gitignore

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+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+
+# 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/
+
+# Web related
+lib/generated_plugin_registrant.dart
+
+# 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

Android/2021_11_20_FlutterClass-2/flutter_class_2/.metadata

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+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: 18116933e77adc82f80866c928266a5b4f1ed645
+  channel: stable
+
+project_type: app

Android/2021_11_20_FlutterClass-2/flutter_class_2/README.md

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+# flutter_class_2
+
+An app with a homescreen navigating to following demos:
+        - Showing a hierarchy of `Row` and `Column` widgets.
+        - Showing a hierarchy of `Row` and `Column` and `Image` widgets.
+        - Showing use of `LayoutBuilder` widget.
+        - Showing use of `MediaQuery` widget.
+        - The homescreen itself shows unnamed route navigation.
+
+
+Visit: [https://github.com/CC-MNNIT/2021-22-Classes/tree/main/Android/2021_11_20_FlutterClass-2/flutter_class_2/](https://github.com/CC-MNNIT/2021-22-Classes/tree/main/Android/2021_11_20_FlutterClass-2/flutter_class_2/) for the source code.
+
+## Outcome:
+
+![Screenshot](Screenshot.jpg)

Android/2021_11_20_FlutterClass-2/flutter_class_2/analysis_options.yaml

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

Android/2021_11_20_FlutterClass-2/flutter_class_2/android/.gitignore

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

Android/2021_11_20_FlutterClass-2/flutter_class_2/android/app/build.gradle

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+def localProperties = new Properties()
+def localPropertiesFile = rootProject.file('local.properties')
+if (localPropertiesFile.exists()) {
+    localPropertiesFile.withReader('UTF-8') { reader ->
+        localProperties.load(reader)
+    }
+}
+
+def flutterRoot = localProperties.getProperty('flutter.sdk')
+if (flutterRoot == null) {
+    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
+}
+
+def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
+if (flutterVersionCode == null) {
+    flutterVersionCode = '1'
+}
+
+def flutterVersionName = localProperties.getProperty('flutter.versionName')
+if (flutterVersionName == null) {
+    flutterVersionName = '1.0'
+}
+
+apply plugin: 'com.android.application'
+apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
+
+android {
+    compileSdkVersion 30
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId "co.nishchal.flutter_class_2"
+        minSdkVersion 16
+        targetSdkVersion 30
+        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 '../..'
+}

Android/2021_11_20_FlutterClass-2/flutter_class_2/android/app/src/debug/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="co.nishchal.flutter_class_2">
+    <!-- Flutter needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

Android/2021_11_20_FlutterClass-2/flutter_class_2/android/app/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="co.nishchal.flutter_class_2">
+   <application
+        android:label="Class 2"
+        android:icon="@mipmap/ic_launcher">
+        <activity
+            android:name=".MainActivity"
+            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"
+              />
+            <!-- Displays an Android View that continues showing the launch screen
+                 Drawable until Flutter paints its first frame, then this splash
+                 screen fades out. A splash screen is useful to avoid any visual
+                 gap between the end of Android's launch screen and the painting of
+                 Flutter's first frame. -->
+            <meta-data
+              android:name="io.flutter.embedding.android.SplashScreenDrawable"
+              android:resource="@drawable/launch_background"
+              />
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+        <!-- Don't delete the meta-data below.
+             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
+        <meta-data
+            android:name="flutterEmbedding"
+            android:value="2" />
+    </application>
+</manifest>

Android/2021_11_20_FlutterClass-2/flutter_class_2/android/app/src/main/java/co/nishchal/flutter_class_2/MainActivity.java

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+package co.nishchal.flutter_class_2;
+
+import io.flutter.embedding.android.FlutterActivity;
+
+public class MainActivity extends FlutterActivity {
+}

Android/2021_11_20_FlutterClass-2/flutter_class_2/android/app/src/main/res/drawable-v21/launch_background.xml

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

Android/2021_11_20_FlutterClass-2/flutter_class_2/android/app/src/main/res/drawable/launch_background.xml

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+<?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>

Android/2021_11_20_FlutterClass-2/flutter_class_2/android/app/src/main/res/values-night/styles.xml

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+<?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
+             Flutter 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>

Android/2021_11_20_FlutterClass-2/flutter_class_2/android/app/src/main/res/values/styles.xml

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+<?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
+             Flutter 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>

Android/2021_11_20_FlutterClass-2/flutter_class_2/android/app/src/profile/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="co.nishchal.flutter_class_2">
+    <!-- Flutter needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

Android/2021_11_20_FlutterClass-2/flutter_class_2/android/build.gradle

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+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:4.1.0'
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.buildDir = '../build'
+subprojects {
+    project.buildDir = "${rootProject.buildDir}/${project.name}"
+    project.evaluationDependsOn(':app')
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

Android/2021_11_20_FlutterClass-2/flutter_class_2/android/gradle.properties

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+org.gradle.jvmargs=-Xmx1536M
+android.useAndroidX=true
+android.enableJetifier=true
+org.gradle.daemon=false

Android/2021_11_20_FlutterClass-2/flutter_class_2/android/gradle/wrapper/gradle-wrapper.properties

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+#Fri Jun 23 08:50:38 CEST 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-all.zip