The document discusses 15 popular Android libraries that are useful for app development. It provides brief descriptions of libraries for networking (Retrofit), dependency injection (Dagger 2), image loading (Picasso, Glide), scanning (ZXing, CamView), view binding (Android data binding, ButterKnife), reactive programming (RxJava2), debugging (Stetho), drawing (HoloGraph, MPAndroidChart), testing (Espresso, Robolectric), and UI components (GravityView). The document encourages contacting the web and mobile app development company Concetto Labs for Android app development services.

1. 15 Android Libraries for App Development

2. As we know that Android libraries and frameworks are a set of
execution of code that is written in programming languages and have
a well-developed interface.
These libraries commonly involve configuration data, documentation,
message templates, pre-written code, help data, and subroutines,
classes, values, etc.
One of the significant reasons for using these Android libraries is to
facilitate the development process. This means to develop an
amazing app without any additional efforts. These libraries offer
developers with necessary pre-written codes and additional crucial
factors that can be used directly instead of performing these tasks
from scratch.

3. So, whether you’re learning about Android apps creation or want a
mobile app on Android, then knowledge of these popular libraries are
a must. These are, fortunately, the go-to tool of nearly every Android
app development company.
In this article, we’ll be sharing the top 15
Android libraries that one should know:

5. 1. Retrofit (Networking)
It is a type-safe REST client for Java and Android, effectively
mapping an API into a client interface with the help of commentaries.
Earlier, if you wanted to make a network request, you needed to
implement an Async task class. After that, you can use
HttpsUrlConnection to retrieve data, something that was not perfect
when dealing with APIs delivering large data. This is now fixed by
Retrofit.
Initiate the program by adding the dependency to your apps
build. Gradle file-:
● implementation ‘com.squareup.retrofit2:retrofit:2.3.0’

6. 2. Dagger 2 (Dependency Injector Library)
One of the best things about Dagger 2 is that it primarily depends on
practicing Java footnotes processors along with compile-time to
evaluate and analyze dependencies. On the other hand, different
Java dependency injection libraries experience restrictions such as
relying on XML, facing validating dependency issues at run-time or
acquiring performance penalties during startup.

7. 3. Picasso (Image loading)
Picasso is a trusted and extensively used Android image library,
which is managed by Square. He provides seamless image loading in
the application that you will often find in a single line of code.
Picasso.get().load(“http://i.imgur.com/DvpvklR.png”).into(imageView
);

8. 4. Glide (Image loading)
Glide is another most appreciated image loader, which is one of the
new Android libraries for developers, maintained by Bumptech. Also,
it’s recommended by Google as well. He not only offers animated GIF
support while managing caching and image loading, but also assists
in decoding, fetching, displaying video calls, GIFs, and images. It
also involves flexible API empowering developers to plug in any
network heap, as per its default HttpUrlConnection.

9. 5. Zxing (Scanning)
Abbreviation for ‘Zebra Crossing’, ZXing is a barcode image-
processing Android library that is executed in Java, with regards to
other programming languages. This library also assists in the 1D
industrial, 1D product, and 2D barcodes.
6. CamView (Scanning)
This is another option to the ZXing barcode scanner. It is an Android
camera that easily accesses the library with an installed QR scanner,
which is based on ZXing.

10. CamView library maintains a wide range of elements that adds layout
files, enabling developers to-
● Scanning barcodes with the help of ZXing’s built-in decoding
engine
● To perform your camera live data processing
● You can preview live video from the camera of Android devices

11. 7. Android data binding (View binding)
The Android Databinding library needs the most insignificant of
Android Studio Version 1.3 to work. This view-binding library for
Android does not use commentaries. It enables you to combine UI
elements in the layouts to data sources in the app with the help of
declarative form instead of programmatically.
In this, layouts are outlined in activities with code that needs UI
framework arrangements, i.e., look at the code below. It describes
findViewById() to find TextView widget while binding it to userName
property of the mutable viewModel.

12. 8. ButterKnife (View Binding)
ButterKnife was developed by Jake Wharton, which is a famous view
binding library assisting in assigning ids to views without any hassle,
therefore evading the excess of findViewByld. The major difference
between the two is that ButterKnife explanations are meant to
generate boilerplate code.
The code mentioned below shows that ButterKnife reduces the need
for things like onTouch and onClick while restoring them with auto
injected code.

13. 9. RxJava2 (React programming)
Are you are looking for a library that supports you in implementing
reactive programming? Look no further than RxJava! It is formally
defined as a library for compiling event-based and asynchronous
programs.
This library is recognized as unmatchable by Android app developers
as it streamlines the process to chain async operations, exposes a
more clear way to demonstrate how concurrent operations should
work. It also detects errors sooner than other libraries.

14. 10. Stetho (Debugging)
Stetho intends to be a refined debug platform for Android
applications. You can optimize this library boundlessly; it is not
restricted to Network inspection, JavaScript Console, Database
inspection, etc. When you opt for Android app development services,
they use this to access the Chrome Developer Tools features that are
typically a part of the Chrome desktop browser.

15. 11. Holo graph library (Drawing)
It is a new graphics library that is constantly growing and becoming
a favorite of many Android app development companies. This library
is amazing for adding elegantly designed charts and graphs into
Android applications.
<com.echo.holographlibrary.LineGraph
android:layout_width=”match_parent”
android:layout_height=”200dp”
android:id=”@+id/graph”/>

16. 12. Espresso (Testing)
Espresso is a crucial part of the Android testing support library, which
is an obvious test framework that empowers developers to build user
interface tests for Android purposes. Assuming that this library allows
you to write tests, it also checks whether the text of a TextView is
related to another text or not. It gives the impression of a real user
using the app.
Hence, to use this library, you need to add dependencies to the app
module build.gradle file.
● androidTestCompile
‘com.android.support.test.espresso:espresso-core:3.0.1’
● androidTestCompile ‘com.android.support.test:runner:1.0.1’

17. 13. Gravity view (UI Components)
It is a popular concept in the market. This is a library that is used for
image tilting by using sensors. Gravity View aims to optimize the
motion sensors of Android devices, enabling users to achieve certain
functions by rotating their device.
Find is the very first application in which this library was used and
since then it has continued to be everyone’s favorite. For using this
application one needs to use Android 3.0 and higher versions.

18. 14. Robolectric (Testing)
Robolectric is the second most unparalleled unit testing library after
Espresso. This library control inflation of resource loading, views,
including many other aspects. It has the ability to perform tests
created in the library more efficiently and impressively. To simply put
across, Robolectric imitates the Android SDK for the tests, reducing
the need for extra mocking frameworks like Mockito.

19. 15. MPAndroidChart (Drawing)
MPAndroidChart is an excellent Android chart/graph view library. It
sustains line, bar, radar, bubble, candlestick charts, pie along with
scaling, dragging, and animations.
Are you planning to hire android app developers for your next
android app development project? Contact us today at
info@concettolabs.com and we will get back to you within 24
business hours.

20. Web & Mobile App Development Company
https://concettolabs.com

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