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What about template for 2021 and beyond?

While the template was made in 2019, it holds up well in 2020, however there are more cool stuff came around since then. You should always refer to Google's official projects for pointers. Here are some relevant references:

• https://developer.android.com/jetpack and https://developer.android.com/jetpack/androidx/versions
• https://github.com/android/sunflower
• https://github.com/android/architecture-samples
• https://github.com/chrisbanes/tivi
• https://github.com/cortinico/kotlin-android-template
• https://medium.com/@hossainkhan/how-to-take-your-beginner-android-skills-to-the-next-level-by-studying-open-source-android-apps-713d55c5094

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Android Barebone Template Project

A barebone MVVM architecture based Android project with some essential tools configured the right* way. See Android Architecture Blueprints v2 for more comprehensive app architecture example.

Inspiration: The architecture is inspired by combination of different project by Google and Android Community, such as:

• Github Browser - Sample project from Android Architecture Components repository
• Todo MVVM LiveData App - Todo app by Android Architecture Blueprints
• Android Blueprints v2 - Modern Architecture - Todo app using all the modern libraries like Architecture Components, Navigation, MVVM and so on.

Configured Essentials

There are few essentials that are added to the project. Best way to see what is included is to check the latest dependecies from app/build.gradle

Here are list of dependencies included:

1. AndroidX
   1. AppCompat
   2. Material Theme
   3. ViewModel
   4. Lifecycle
   5. ConstraintLayout
   6. ViewPager 2
   7. Kotlin Extensions (KTX)
2. Firebase Crashlytics
3. Firebase Analytics
4. Timber - android logging
5. Dagger 2 - dependency injection for Activity and Fragment Upgraded to Dagger Hilt (alpha), see PR#38
6. RxJava 3 - ReactiveX Java
7. Retrofit 2 - REST API
8. OkHttp - with logging interceptor
9. Gson - JSON response parsing
10. Mockito - unit test mocking
11. Leak Canary 2 - automatic memory leak detection
12. Kt Lint Format - An anti-bikeshedding Kotlin linter with built-in formatter

Optional Library and Integrations

You may need to delete optional features based on your need.

1. CircleCI integration for CI/CD.

Pre-Requisite (:computer: TODO After cloning repo)

• You must create a Firebase project and use the google-services.json from your project. A placeholder google-services.json is provided so that app compiles.
• You must update package name and application ID where applicable.
• Remove feature X, Y, and Y activities and related resources. However, it may be beneficial to keep them as reference point at initial phase of the project.
• Remove fragment A, B, and C and related files like ViewModel and Layout files.
• Remove unused libraries that are added in app/build.gradle
• Also update your application's theme color. See styles.xml

Preview

Currently the barebone app has following sample activities:

• MainActivity - Hosts fragments using ViewPager and navigates using BottomNavigationView.
• Feature X - showcases how REST call is made using injected service in ViewModel.
• Feature Y - showcases how RecyclerView can be used in conjunction with DiffUtils.
• Feature Z - showcases how Fragment can also have injection and use service in ViewModel.