Added covid-19 example app and Updated the readme (#73)

README.md

@@ -54,6 +54,7 @@ Lookup Links: [[Setup Flutter](https://flutter.io/setup/)] [[Widgets Catalog](ht
 1. [Tip Calculator](/tip_calculator)
 1. [Expense Planner](/expense_planner)
 1. [Notes App](/using_firebase_db)
+1. [Covid-19 App](/covid19_mobile_app)
 
 # Get packages for all flutter projects
 

covid19_mobile_app/.gitignore

@@ -0,0 +1,41 @@
+# 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

covid19_mobile_app/.metadata

@@ -0,0 +1,10 @@
+# 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: d408d302e22179d598f467e11da5dd968dbdc9ec
+  channel: stable
+
+project_type: app

covid19_mobile_app/README.md

@@ -0,0 +1,72 @@
+# Covid-19 Mobile App
+
+Mobile app to get information about covid-19 cases.
+Link to the API used: https://documenter.getpostman.com/view/8854915/SzS7R6uu?version=latest
+
+Before runnning the application, run the following command:
+```
+flutter pub get
+```
+
+You can then run the project with the following command:
+```
+flutter run
+```
+
+Just to ensure that the app works perfectly, add the following permission in ```AndroidManifest.xml``` file:
+
+```
+<uses-permission android:name="android.permission.INTERNET" />
+```
+
+By default the app shows Corona Virus cases in India on the home page. You can change the country name in variable ```url2``` to show the cases in other coountries or maybe get the location of the user and show accordingly.
+
+The packages used in this project are as follows:
+
+1. number_display - to display data in a width-limited component. For eg: it converts 2500000 to 2.5M
+
+2. http - to send http requests to the API
+
+3. bezier_chart - to visualize the received data from the API
+
+4. folding_cell - to display a foldable cell to view details(total deaths, today cases, etc.). This foldable cell is present in 'Affected Countries' page
+
+
+Images are present in the ```assets``` folder
+
+
+Files present in this project along with their purposes are given below:
+
+```resources/fetch_data_functions.dart``` - contains functions to fetch data from the api(NovelCOVID API).
+
+```screens/home.dart``` - shows Covid-19 cases of the whole world(all coutries together) and includes visualization of the cases in India(you can change the country by changing the url).
+
+```screens/countrylist.dart``` - shows Covid-19 cases, country wise, in the form of a list. Each cell in the list is foldable. Upon expanding the cell, more info is shown.
+
+
+```screens/searchCountry.dart``` - similar to ```screens/countrylist.dart``` but here user can also search.
+
+```widgets/drawer.dart``` - contains the side drawer code
+
+```widgets/foldable_cell_widgets.dart``` - contains reusable front, inner top and inner bottom widgets of the foldable cell that are used in ```screens/countrylist.dart``` and ```screens/searchCountry.dart```.
+
+```widgets/graph.dart``` - contains the code for building the graph.
+
+```widgets/info_card.dart``` - contains the code for displaying rounded retangular cards on the home page.
+
+## Screenshots
+
+<p align="center">
+  <img width="200" height="400" src="https://user-images.githubusercontent.com/26627849/95628928-a25b4b00-0a9c-11eb-8471-6209841e96dd.png">
+  <img width="200" height="400" src="https://user-images.githubusercontent.com/26627849/95628941-a6876880-0a9c-11eb-8a09-ccfd5663b644.png">
+</p>
+
+<p align="center">
+  <img width="200" height="400" src="https://user-images.githubusercontent.com/26627849/95628944-a71fff00-0a9c-11eb-9ab8-94277a2a93a4.png">
+  <img width="200" height="400" src="https://user-images.githubusercontent.com/26627849/95628948-a8512c00-0a9c-11eb-83f9-7bbc92334949.png">
+</p>
+
+<p align="center">
+  <img width="200" height="400" src="https://user-images.githubusercontent.com/26627849/95628951-a8e9c280-0a9c-11eb-930f-e51aec142cdd.png">
+  <img width="200" height="400" src="https://user-images.githubusercontent.com/26627849/95628954-a8e9c280-0a9c-11eb-8b57-e50b83c68e24.png">
+</p>

covid19_mobile_app/android/.gitignore

@@ -0,0 +1,11 @@
+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

covid19_mobile_app/android/app/build.gradle

@@ -0,0 +1,63 @@
+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 plugin: 'kotlin-android'
+apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
+
+android {
+    compileSdkVersion 29
+
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
+    }
+
+    lintOptions {
+        disable 'InvalidPackage'
+    }
+
+    defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId "github.nisrulz.covid19mobileapp"
+        minSdkVersion 16
+        targetSdkVersion 29
+        versionCode flutterVersionCode.toInteger()
+        versionName flutterVersionName
+    }
+
+    buildTypes {
+        release {
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig signingConfigs.debug
+        }
+    }
+}
+
+flutter {
+    source '../..'
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}

covid19_mobile_app/android/app/src/debug/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.covid19_mobile_app">
+    <!-- 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>

covid19_mobile_app/android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,47 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="github.nisrulz.covid19mobileapp">
+    <!-- io.flutter.app.FlutterApplication is an android.app.Application that
+         calls FlutterMain.startInitialization(this); in its onCreate method.
+         In most cases you can leave this as-is, but you if you want to provide
+         additional functionality it is fine to subclass or reimplement
+         FlutterApplication and put your custom class here. -->
+    <application
+        android:name="io.flutter.app.FlutterApplication"
+        android:label="Covid-19"
+        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>

covid19_mobile_app/android/app/src/main/kotlin/com/example/covid19_mobile_app/MainActivity.kt

@@ -0,0 +1,6 @@
+package com.example.covid19_mobile_app
+
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity: FlutterActivity() {
+}

covid19_mobile_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>

covid19_mobile_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 -->
+    <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:color/white</item>
+    </style>
+</resources>

covid19_mobile_app/android/app/src/profile/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.covid19_mobile_app">
+    <!-- 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>

covid19_mobile_app/android/build.gradle

@@ -0,0 +1,31 @@
+buildscript {
+    ext.kotlin_version = '1.3.50'
+    repositories {
+        google()
+        jcenter()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.5.0'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        jcenter()
+    }
+}
+
+rootProject.buildDir = '../build'
+subprojects {
+    project.buildDir = "${rootProject.buildDir}/${project.name}"
+}
+subprojects {
+    project.evaluationDependsOn(':app')
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

covid19_mobile_app/android/gradle.properties

@@ -0,0 +1,3 @@
+org.gradle.jvmargs=-Xmx1536M
+android.useAndroidX=true
+android.enableJetifier=true

covid19_mobile_app/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#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-5.6.2-all.zip

covid19_mobile_app/android/settings.gradle

@@ -0,0 +1,11 @@
+include ':app'
+
+def localPropertiesFile = new File(rootProject.projectDir, "local.properties")
+def properties = new Properties()
+
+assert localPropertiesFile.exists()
+localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
+
+def flutterSdkPath = properties.getProperty("flutter.sdk")
+assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
+apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"