Whenever you plan to establish an Android App development company then essentially it is going to be the libraries that might provide you the backbone for building your mobile app developments. In general, the Android Frameworks and Libraries reflects a set of implementation of behaviors that are defined overwhelmingly through programming languages, despite their inherent nature of well-defined interfaces. Almost every library does include the documentation, configuration data, message templates, help data, and pre-written codes in order to function smoothly.

One main reason for accessing these libraries happens to be evident when changing the pace of the development process expedite and accomplishing a secure app without additional efforts. We have written this article for app developers who are interested in the creation of Android Apps utilizing the latest of libraries and contributing their best towards the Android App Development Company .

Dependency Injector Library

Generally, all business applications are built with two or more classes and they, in turn, collaborate one and another to perform a specific operation. The dependency injectors are used to create the instance of a dependent class object and thereby enable the mobile app to succeed with its operation. Eventually, on every occasion, the object class receives the dependencies at creation time by an external entity and later takes control of coordinating each object within the system. Here we have prepared the list of latest Android Libraries for dependency injection practices in 2020.

1. Dagger 2

Dagger 2 is the most powerful dependency injector that relies on Java annotation processors and quick compilation procedures. While other Java Libraries have the need to XML parse elements during compilation and so imposes the penalties in performance. Using the Dagger 2 injector results in building easy access to shared instances and allows in the development of a large application that requires zero maintenance.


public class MainActivity extends Activity {
   @Inject MyTwitterApiClient mTwitterApiClient;
   @Inject SharedPreferences sharedPreferences;

   public void onCreate(Bundle savedInstance) {
       // assign singleton instances to fields
       InjectorClass.inject(this);
   }

Networking

We have selected a few tools that might be required for establishing all sorts of network communications within the Android App.

2. Retrofit

Retrofit is normally a REST client for both Android and Java libraries that works amazingly well through mapping API’s within the client interface retrieving time-critical instructions from annotations. It allows the synchronous and asynchronous API calling and execution. In the earlier past, the network request was made through executing an Async Class followed by HttpsUrlConnection making the large data storage a feasible option.

<manifest xmlns:android="http://schemas.android.com/apk/res/android">
    <uses-permission android:name="android.permission.INTERNET" />
</manifest>

Start adding the following to your app/build.gradle file:

dependencies {
    implementation 'com.google.code.gson:gson:2.8.5'
    implementation 'com.squareup.retrofit2:retrofit:2.4.0'
    implementation 'com.squareup.retrofit2:converter-gson:2.4.0'  

}

Image Loading

The Image loading library is a strategic connector made to mitigate ‘out memory errors’ in the Android App and fetches multiple images to load at once instantaneously.

3. Picasso

Picasso was developed by Square for absolutely replacing the existing Android Image library. It allowed real-time image loading in an application without causing any time delays. One interesting fact about Picasso is that it can facilitate complex image transformation using only a minimal memory and thereafter allocate the vital memory and caching. Some of the significant features of using Picasso for the Android App Developments Services are:

  • Picasso can interface with the adapter quite efficiently and enable re-use policy
  • It can transform images and then fit them into a standard layout
  • There is also a custom transformation for achieving advanced effects
Picasso.get().load("http://i.imgur.com/DvpvklR.png").into(imageView);

4. Glide

Glide is also an image loader compatible to be included in android libraries. It provides the animated GIF support within libraries enabling the android app to fetch, decode, display in video calls. It offers the advantage to network connect API and allow developers and programmers to access images without distortions. Glide allows modification of images like move, resize and display remote images.

If you would be using Gradle, then add a dependency on Glide by using Mavencentral:

repositories {
  mavenCentral()
  google()
}

dependencies {
  implementation 'com.github.bumptech.glide:glide:4.11.0'
  annotationProcessor 'com.github.bumptech.glide:compiler:4.11.0'
}

Scanning

There are a lot of scanning libraries to integrate within an Android App and then enable the image capturing facility more accurately.

5. Zxing

Zxing is often referred to as Zebra Crossing and is a barcode image detector library that is found in Java with port extensions available for other languages. It has the ability to read 1D product, 1D industrial and 2D barcode images. Basically, all the barcode indexing in the google framework is aligned usingZxing libraries . It is also an essential element built-in with the Android Barcode Scanner App.

6. CAMView

CAMView is again a barcode scanner available for integrating to Android Camera library with options to QR Scan capabilities. CAMView library consists of a set of components for building a layout frame according to specifications and incites developers with immediate access to the following functionalities.

  • Enable the Video Feed directly from device camera
  • Allow scanning barcodes
  • Manually build the camera live data processing

View Binding

The view binding libraries were basically meant to reduce the redundancy of boilerplate codes and then free up the constraints arise in delegating views to different variables. Considering the vast availability of these view binding libraries we have jotted down only the two most prominent once for your interest.

7. ButterKnife

It is a popular android library for view binding purpose achieved through assigning specific ids for building views. This cancels the android findViewByld app functioning process and resembles a lot like how dependency injection procedure works. The uniqueness of the butter knife is that it reduces the use of boilerplate codes and replaces it indeed with auto-injection codes.

8. Android Databindingz

It is a primitive built-in library that can default bind views exceptionally on lower versions of Android Studio 1.3 Framework. This is because the Android Databinding library does not encourage annotations. It simply uses a declarative format to provide the UI component view binding transacted to XML data sources in the app and enables the display layout.

Debugging

Debugging is an indispensable stage in the Android App development process for converting them into an end product. Some of the useful android libraries are:

9.Stetho

Stetho is one of the most utilized debugging tools in Android Applications. It debugs just beyond repairing the Network, Database, and JavaScript Console to promote Google Chrome Apps developments. This proves Stetho libraries are powerful and have a variety of CLI commands to direct application internals.

Reactive Programming

Generally in Reactive Programming, the data is released from one component to another in an asynchronous manner known as Subscriber. Some of the Android App development libraries that help in transferring data to subscribers are:

10. RxJava2

RxJava2 library offers observable sequences for implementing reactive programming successfully and then compose every asynchronous and event-based program in a quick time. It can detect errors fast around the chained async operations and is much better a tool for concurrent operational practices.

Drawing

With over hundreds of libraries available it is demanding that a graphic library should prove its mettle in order to impress any android app developer.

11. MPAndroidChart

This library is impeccable at representing Android Chart/Graph views more accurately. MPAndroidChart library has wider options to include radar, bubble, line bar, pie, candlestick charts along with animations, scaling and drag features.

12. Holo Graph Library

Holo Graph Library is an open-source version of android app development that can display graphs and charts intriguingly and accurately. This library helps app developers to produce instant LineGraph view, BarGraph view, PieGraph view, and MultiSeriesDonutGraph views instantly.

UI Components

The User Interface is, however, a major impacting force in the Android App Development Company. In this way, the Gravity View library happens to be highly innovative and advancing in terms of UI Component designs.

13. Gravity View

Gravity View library makes use of the image tilting aspect that is governed by motion sensors prefixed in the Android devices. It can perform a set of functions for the mobile user by simply rotating the device. One such android app that made use of Gravity View library to become an instant success is Fynd Apps. This library can also be used across a non-gyroscope device with the help of an Accelerometer Sensor.

Testing

You always have to perform the testing procedures for your android app before competing for affront in the mobile apps market. There are some libraries that can effectively test any android app before submitting it over the app store.

14. Espresso

Espresso is an android test library that allows developers to prepare elaborate UI testing procedures and develop the android app with the best of securities. The performance of Espresso is simply great with inspecting app functions across real devices and emulators rigidly. Moreover, it requires the test library to add dependencies to the build.gradle file to experiment it and then synchronize it for a Quality Check approval.

15. Robolectric

Robolectric is a unit testing library that can debug the android app against inflation of resource loading, views, and other elements. Its expertise can be felt when reproducing a resilient testing environment where real devices can be tested for android framework dependency performances.

Start adding this to your build.gradle:

android {
  testOptions {
    unitTests {
      includeAndroidResources = true
    }
  }
}

dependencies {
  testImplementation 'org.robolectric:robolectric:4.3'
}

Add this gradle.properties:

android.enableUnitTestBinaryResources=true

Finally create your test with the Robolectric test runner:

@RunWith(RobolectricTestRunner.class)
public class SandwichTest {
}

These are the 15 best android libraries that will make your android app development process admirable and inspiring to progress smoothly. It should make you understand the Features, Functions, and Performances of Android App Developments and build applications faster and at moderate prices.

Author Bio:
This is Vigneshwaran, Senior Digital Marketing Executive at W2S Solutions. An enthusiastic blogger and writer having a keen interest in web and mobile app development technologies , startup ideas, and strategies.