It is a modern Android app that uses SpaceX API to display all the Rockets, Launches, and Crew members. It uses Clean Architecture with Repository Pattern for robust local DB caching.
Download the debug APK from Releases.
MVVM (Model-View-ViewModel) Architecture combines the advantages of separation of concerns provided by MVP, while maintaining testability. This results in a pattern where the model drives as many of the operations as possible, minimizing the logic in the view.
Jetpack is a suite of libraries to help follow best practices, reduce boilerplate code, and write code that works consistently across Android versions and devices.
Android Architecture Components like ViewModel, LiveDataand Lifecycle-aware components are implemented in this app for a more robust, testable and maintainable codebase.
Dagger-Hilt is responsible for Dependency Injection throughout the app. It is used to inject dependencies like Room instance and ViewModels.
Coroutines is used to execute code in an asynchronous and non-blocking way. It is heavily used in the ViewModels and also to make databse requests to the Room instance.
Room persistence library provides an abstraction layer over SQLite to allow for more robust database access. It provides compile-time query verification, convenience annotations and less boilerplate code.
Navigation components is used to handle fragment transactions, and Up and Back actions correctly by default. It simplifies navigation and passing data between destinations in a type-safe way using Safe Args.
View Binding is used to ensure compile-time safety for accessing the view hierarchy. It creates an instance of a binding class that contains direct references to all views that have an ID in the corresponding layout.
Material Components provide beautiful UI elements with a lots of customizations. It is used as it defines the latest standards for design by Google.
Retrofit with Moshi for JSON serialization/deserialization is used for networking in the app to make API calls to the SpaceX API.
The OkHttp interceptor logs request and response information, and has been used to used to log all the body-level details related to the network calls for debugging purposes.
Lottie is an amazing library for easy animations in Android, iOS and Web. The animations seen in this app represent some of the states of the app: Loading, Error or No Internet.
Glide is the image library used in this app. It is fast and offers more fine-grained control over image loading.
Timber is a logger with a small, extensible API which provides utility on top of Android's normal Log class. It has been used for debugging purposes.
- Extract the business logic from
ViewModelsintoUseCasesas part of aDomainlayer in the Clean Architecture. This ensures an even better Seperation of Concerns among the components involved, and also aids testing. - As part of
Moshi, replace theReflectionbased adapters for Kotlin withCodeGenones. This can make the serialization/deserialization process between JSON and Data Models much faster.
Copyright 2021 Atri Tripathi
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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