Android Architecture Components Reach Stability
Written by Kay Ewbank   
Thursday, 09 November 2017

Google has released the 1.0 stable version of its Android Architecture Components. These are a collection of libraries that Google says help you design robust, testable, and maintainable apps.

The Architecture Components are designed to help your apps deal with the aggressive resource management of the Android OS. Aggressive resource management enables Android OS to work on such a wide variety of devices, but it does make it harder to build robust apps.

When Google launched the Android Architecture Components at Google I/O, Mike James was dubious about how useful they would prove to be, saying:

"With turbulent times in the Android world, now is probably not the moment for an architecture library and certainly not an under-developed and probably under-resourced one." 

A more upbeat analysis of the components can be seen in this video from Google:

 

 

The Architecture Components are made up of libraries for common tasks like lifecycle management and data persistence to help developers write modular apps with less boilerplate code.

Two of the component libraries - Room and Lifecyle - have now been launched in a 1.0 stable version.

Room is a SQLite object mapping library that can be used to convert SQLite table data to Java objects. It provides compile time checks of SQLite statements and can return RxJava, Flowable and LiveData observables.

Room has three main components - database, entity and DAO. Database contains the database holder and serves as the main access point for the underlying connection to your app's persisted, relational data. Entity represents a table within the database, and DAO contains the methods used for accessing the database.

The Lifecycle library provides tools for managing the state of components. It can be used to create lifecycle-aware components that manage their own lifecycles, reducing the possibility of leaks or crashes. The library provides classes and interfaces that let you build components that can automatically adjust their behavior based on the current lifecycle state of an activity or fragment.

Lifecycles are now also integrated with the Support Library, so you can use them with standard classes like AppCompatActivity.

The Lifecycle library is the foundation for other Architecture Components like LiveData, which is a lifecycle-aware observable that holds data and provides updates. The Lifecycle library is also the foundation for ViewModel, which separates ownership of view data and logic from lifecycle-bound entities like Activities and Fragments.

Other Architecture Components will become available in the coming months, probably starting with PagedList (which is currently in alpha). This is designed to handle large datasets better. 

 archcomp

More Information

Android Architecture Components

Related Articles

Android Gets Architecture Components 

Android Studio 3

Kotlin - New Language For Android

To be informed about new articles on I Programmer, sign up for our weekly newsletter, subscribe to the RSS feed and follow us on Twitter, Facebook or Linkedin.

 

Banner


Node.js 18 Adds Core Test Runner
26/04/2022

Node.js 18 has been released with improvements including the enabling by default of global fetch, and a core test runner module.



Dash Dash - Making Linux Documentation More Approachable
16/05/2022

Dash Dash is a new website that aims to prettify the ugly that is the Man Pages. What once felt like a maze of weird symbols and hyper intense colors, now are visually subdued and easier to understand [ ... ]


More News

 

pythondata

 



 

Comments




or email your comment to: comments@i-programmer.info

Last Updated ( Thursday, 09 November 2017 )