NewsApp-MVVM-Architecture

Introducing our cutting-edge News MVVM app, meticulously crafted with the latest technologies recommended by Google. This app is designed to deliver a seamless news reading experience, whether you're online or offline. Here’s a sneak peek into its features and architecture:

Major Highlights:

• MVVM Architecture : Built using the Model-View-ViewModel architecture, ensuring a clean separation of concerns and making the app highly maintainable and testable.
• Offline-First: Prioritizes offline access with a single source of truth, ensuring you can read the news even without an internet connection.
• Room Database: Utilizes Room for efficient local data storage and retrieval.
• Dependency Injection with Hilt: Implements Hilt for managing dependencies, reducing boilerplate code and improving scalability.
• Pagination Library: Seamlessly handles data pagination, providing a smooth scrolling experience through endless news articles.
• Coroutines and Flow API: Leverages Kotlin Coroutines and Flow API for efficient and smooth data processing pipelines.
• Comprehensive Unit Testing: Ensures robustness with extensive unit tests covering all critical components.

Feature implemented:

• NewsApp
• Instant search using Flow operators
  • Debounce
  • Filter
  • DistinctUntilChanged
  • FlatMapLatest
• Offline news
• Pagination
• Unit Test
  • Mockito
  • Turbine https://github.com/cashapp/turbine
  • Espresso
• TopHeadlines of the news
• Country-wise news
• Multiple Languages selection-wise news
• Multiple sources wise news

Dependency Used:

• Recycler View for listing

implementation "androidx.recyclerview:recyclerview:1.2.1"
implementation 'androidx.recyclerview:recyclerview-selection:1.1.0' //multi item selection

• Glide for image loading

implementation 'com.github.bumptech.glide:glide:4.11.0'

• Retrofit for networking

implementation 'com.squareup.retrofit2:retrofit:2.9.0'
implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
implementation 'com.squareup.okhttp3:logging-interceptor:4.8.0'

• Android Lifecycle aware component

implementation 'android.arch.lifecycle:extensions:1.1.1'
implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.5.1'
implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.1'

• Dagger for dependency Injection

implementation "com.google.dagger:dagger:2.42"
kapt "com.google.dagger:dagger-compiler:2.42"

• For WebView browser

implementation 'androidx.browser:browser:1.4.0'

• Room Database

implementation "androidx.room:room-runtime:2.4.2"
kapt "androidx.room:room-compiler:2.4.2"
// optional - Kotlin Extensions and Coroutines support for Room
implementation "androidx.room:room-ktx:2.4.2"

• Paging library

implementation "androidx.paging:paging-runtime:3.1.1"

• Local Unit test

testImplementation 'junit:junit:4.13.2'
testImplementation "org.mockito:mockito-core:4.9.0"
kaptTest "com.google.dagger:dagger-compiler:2.42"
testImplementation "android.arch.core:core-testing:1.1.1"
testImplementation "org.hamcrest:hamcrest-library:2.1"
testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.1'
testImplementation 'app.cash.turbine:turbine:0.12.1'
testImplementation 'androidx.test.espresso:espresso-core:3.5.0'

• UI Test

androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.0'
androidTestImplementation "androidx.test.espresso:espresso-contrib:3.4.0"
androidTestImplementation "androidx.test.espresso:espresso-intents:3.4.0"
androidTestImplementation "org.mockito:mockito-core:4.9.0"
androidTestImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.1'
androidTestImplementation "org.mockito:mockito-core:4.9.0"
kaptAndroidTest "com.google.dagger:dagger-compiler:2.42"

The Complete Project Folder Structure

├── NewsApplication.kt
├── data
│   ├── api
│   ├── local
│   ├── model
│   └── repository
├── di
│   ├── component
│   ├── module
│   ├── qualifiers.kt
│   └── scopes.kt
├── ui
│   ├── MainActivity.kt
│   ├── base
│   ├── country
│   ├── language
│   ├── newsListScreen
│   ├── pagination
│   ├── search
│   ├── sources
│   └── topheadline
└── utils
    ├── AppConstant.kt
    ├── DispatcherProvider.kt
    ├── Extentions.kt
    ├── NetworkHelper.kt
    ├── Resource.kt
    ├── Status.kt
    ├── TypeAliases.kt
    └── network