Android Architecture Blueprints v2

A collection of samples to discuss and showcase different architectural tools and patterns for Android apps.
Under Apache License 2.0
By android

android android-architecture samples

Android Architecture Blueprints v2

Android Architecture Blueprints is a project to showcase different architectural approaches to developing Android apps. In its different branches you'll find the same app (a TODO app) implemented with small differences.

In this branch you'll find:
* Kotlin Coroutines for background operations.
* A single-activity architecture, using the Navigation component to manage fragment operations.
* A presentation layer that contains a fragment (View) and a ViewModel per screen (or feature).
* Reactive UIs using LiveData observables and Data Binding.
* A data layer with a repository and two data sources (local using Room and remote) that are queried with one-shot operations (no listeners or data streams).
* Two product flavors, mock and prod, to ease development and testing (except in the Dagger branch).
* A collection of unit, integration and e2e tests, including "shared" tests that can be run on emulator/device or Robolectric.


This project hosts each sample app in separate repository branches. For more information, see the file in each branch.

Stable samples - Kotlin

| Sample | Description |
| ------------- | ------------- |
| master | The base for the rest of the branches. Uses Kotlin, Architecture Components, coroutines, Data Binding, etc. and uses Room as source of truth, with a reactive UI. |
| dagger-android[compare] | A simple Dagger setup that uses dagger-android and removes the two flavors. |
| usecases[compare] | Adds a new domain layer that uses UseCases for business logic. |

Old samples - Kotlin and Java

Blueprints v1 had a collection of samples that are not maintained anymore, but can still be useful. See all project branches.

Why a to-do app?

The app in this project aims to be simple enough that you can understand it quickly, but complex enough to showcase difficult design decisions and testing scenarios. For more information, see the app's specification.

What is it not?

Who is it for?

Opening a sample in Android Studio

To open one of the samples in Android Studio, begin by checking out one of the sample branches, and then open the root directory in Android Studio. The following series of steps illustrate how to open the usecases sample.

Clone the repository:

git clone [email protected]:googlesamples/android-architecture.git
This step checks out the master branch. If you want to change to a different sample:

git checkout usecases

Note: To review a different sample, replace usecases with the name of sample you want to check out.

Finally open the android-architecture/ directory in Android Studio.


Copyright 2019 Google, Inc.

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