Top 10 Android libraries for developers, here we list out the recommendation of our top 10 libraries for android developers.

1. Volley Library for Android

Volley is a HTTP library that makes organizing and networking operations across Android applications simpler and in particular, faster.

Volley offers the following advantages:

1. Scheduling of network requests are Automated.
2. Send multiple requests or network connection.
3. Memory response caching made easy with standard HTTP cache.
4. Provides support for request prioritization.
5. Cancellation of request made easier, you can cancel single requests or multiple requests with ease.
6. Customization at its best, provides retry and backoff mode.
7. Does everything in the background.
8. Error handling made easier.
9. Provides debugging tools to trace out the actual result of a Api Call.

and much more!

Sample Volley Code :

final TextView mTextView = (TextView) findViewById(R.id.text);

// Instantiate the RequestQueue.

2. Picasso Library for Android :

Picasso is a image loading library for Android. It’s maintained by Square, and takes into account image stacking,request handling and caching. It improves the procedure of displaying pictures from other sources and url’s much easier, and just a couple of lines of code is required to execute this flawless library.

Sample Picasso Code :

ImageView imageView = (ImageView) findViewById(R.id.imageView);

Picasso.with(this)
.load(“https://pbs.twimg.com/media/CR1T_3gVEAAZbGQ.jpg”)
.into(imageView);

3. RetroFit Library for Android :

“Retrofit turns your REST API into a complete Java interface.” It’s one of the most elegant solution to make API calls in your Android Application project. The request methods and relative Api Url’s are added as an annotation, thus making your code more elegant, simpler and cleaner. you can easily add a request body,and manipulate the actual URL or headers and add retrofit also provides a way to handle query parameters.

Retrofit also provides a callback mechanism which allows the application to detect if a Api request made using Retrofit was a success or a failure

Sample Retrofit code :

4. Gson Library for Android

Gson is a Java library for Android with a basic concept that is to convert Java Objects into their corresponding JSON representation and vice versa. GSON uses POJO classes to convert corresponding JSON to their corresponding POJO Classes and does not require Annotations

Few Goals which you can achieve using GSON are

Provide simple toJson() and fromJson() methods which helps in convertion of JSON to corresponding java objects and vice-versa
Supports Java Generics out of the box
Allows customizing representations for java objects

GSON is also supported by Volley

GSON GitHub Link

5. UNIVERSAL IMAGE LOADER for Android :

UNIVERSAL IMAGE LOADER is a library which is pretty much similar to Picasso in functionality, it provides asynchronous, loading and caching of images. and it’s pretty simple and straightforward to use:

imageLoader.displayImage(imageUrl, correspondingImageView);

Universal Image loader has an advantage over Picasso as it provides more customization. With the Universal Image loader configuration builder, everything can be configured and also supports caching of large images in which Picasso sometimes fail to do so.

6. EVENTBUS for Android
EventBus is a library which simplifies the communication in your application. For example, sending data across an Activity to a running Service is normally a costly operation and eventbus helps you reduce it out of the box, Eventbus also helps for easy interaction between two fragments.

7. ORM Lite for Android

Object Relational Mapping Lite is used to avoid complexity and overhead of SQLITE Databases and provides lightweight functionality thus avoiding Boilerplate codes, it supports Sqlite by making native calls to Android database Api’s.

8. ButterKnife for Android

ButterKnife provides field and method binding for android views and uses annotation processing, thus
simplifying the code and making it look clean

ButterKnife eliminates the use of findViewById calls by replacing it with @Bind on fields.
Group multiple views in a list or array. Operate on all of them at once with actions, setters, or properties.
Butterknife also eliminate usage of anonymous inner-classes for listeners(setOnClickListener) by simply annotating such methods with a simple @OnClick.

ButterKnife Sample Code :

class Activity extends Activity {
@Bind(R.id.username) EditText username;
@Bind(R.id.password) EditText password;

@BindString(R.string.error)
String errorMessage;

@OnClick(R.id.submit) void submit() {
// TODO make a call to server…
}

@Override public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.butterknifeactivity);
ButterKnife.bind(this);
// TODO Use fields…
}
}

9. Crashlytics (https://get.fabric.io/crashlytics)

Fabric – recently acquired by Twitter, Gives you the latest information about the crashes in your application and also gives the line number and the complete raw information of the root cause of the Crash.

10. PagerSlidingTabStrip

PagerSlidingTabStrip is an interactive paging indicator widget, that lets you customize the way a tab would look and it is also compatible with the ViewPager library from the Android Support Library.

PagerSlidingTabStrip Sample code :

You have to first include the PagerSlidingTabStrip as a widget in your layout, and should usually be placed just above the ViewPager it represents.

In your onCreate method (or onCreateView for a fragment), bind the widget to the ViewPager.

// Initialize the ViewPager and set an adapter
ViewPager pager = (ViewPager) findViewById(R.id.viewpager);
pager.setAdapter(new BasicAdapter(getSupportFragmentManager()));

// Bind the tabs to the ViewPager
PagerSlidingTabStrip tabs = (PagerSlidingTabStrip) findViewById(R.id.mytabs);
mytabs.setViewPager(pager);
(Optional) If you use an OnPageChangeListener with your view pager you should set it in the widget rather than on the pager directly.

// continued from above
tabs.setOnPageChangeListener(mPageChangeListener);

This fills up the list of must have Top 10 Android libraries for developers.