Best Android Kotlin libraries for Developer.

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Android platform has grown rapidly since then. As you know, in the fast-paced field of software development. things change and evolve at lightning speed. That’s why we’ve decided it’s time for an updated list of the ultimate Best Android Kotlin libraries.

Android Kotlin Top 10 Library

Without further, let’s jump right into our list. We’ll kick off with one of the oldest, and I’d argue, one of the most useful Best Android Kotlin libraries.

Many popular libraries are written by Android Developers and local companies.

1. Retrofit

Retrofit is a type-safe HTTP client that allows you to define your REST API as an interface. You can manipulate the API requests’ body, headers, query parameters and much more via annotations, which makes everything clean and simple. Retrofit also allows synchronous and asynchronous API calls execution.

To top it off, Retrofit offers a separate Rx module. If you are using Rx, this module returns your API call as an Observable so you are able to chain. it with the rest of your application. These are just a few of the many reasons we at Infinium still love and use Retrofit.

2. Moshi

Moshi is a library that converts JSON into Java and Kotlin models. A lot of people refer to the Moshi as GSON 3.0. This library is superior to GSON in several aspects: it’s faster, it includes Kotlin support, it’s maintained, it throws predictable exceptions and it doesn’t use broken DateTime adapter by default. Plus, converting JSON to Java model (and vice-versa) is straightforward with Moshi.

We also admire Moshi for its JSON API support. JSON API is the specification for building APIs, and lot of APIs we work with are written using that specification. Moshi JSON API makes our life easier because it converts JSON API response into meaningful Java objects. Retrofit also has support for Moshi, and it all just clicks togethe

3. Glide

As you probably know by now, Android image loading and handling API is terrible. It’s a nightmare to even resize an image without getting “OutOfMemoryException.” Glide is an image loading library that exposes a nice API, allowing you to transform your image however you want.

This library allows you to easily load a remote image into your ImageView, define fallback images, cache and scale your images and much more. Try accomplishing all this without Glide, and you will quickly understand why this has become our core library. It even supports some common transformations like a circular image out of the box

4. Room

Room is an official Android ORM, and there are multiple reasons for that status. This library features a beautiful API that is similar to Retrofit. It also relies heavily on annotations and standard SQL syntax. Sqlite is also very popular. Room is a feature into JetPack by google.

Additionally, Room includes out of the box support for Rx and “LiveData,” so you can decide to use it however you like. The main benefit Room offers over other ORMs is its simplicity. Other ORMs come with much more complex APIs that require you to read all the documentation thoroughly before you can use them. Thanks to its standard SQL syntax, Room is incredibly easy to understand, allowing you to dive in without spending hours reading the documentation.

5. Android KTX

Android KTX is a set of Kotlin extensions that wraps Android API, making it more user-friendly. The whole purpose of this library is to make Android API more pleasant to use. It adds a lot of methods and cool new features of Kotlin, such as named parameters, lambdas, and default parameter values.

Android KTX features a lot of extension functions, and the only way to learn about them is by digging through library code to see how they improved Android API. This library changes the way we consume Android API—and for that reason, it should become the core of every Android application written in Kotlin.

6. GSON

Gson is a Java library used for serializing and deserializing Java objects from and into JSON. A task you will frequently need to do if you communicate with APIs. We mostly use JSON because it’s lightweight and much simpler than XML. Gson library is written also in android kotlin.

It also plays nice with the next library:

7. UNIVERSAL IMAGE LOADER

UIL is a library which provides asynchronous, out of the box loading and caching of images. It’s pretty straightforward to use:

Although Picasso has a nicer API, it lacks in customization. With the UIL configuration builder, almost everything can be configured (important for fetching and caching of really large images, which Picasso fails to do).

Good open source libraries will make your development a hell of a lot easier and faster. Popular libraries are often well tested and simple to use. In most cases you can easily import them into your Android Studio project from Maven. Add them into dependencies in your build.gradle file like this:

and after syncing you will be good to go to implement them into your app.

Note: Use latest version all the time.

Kotlin Multiplatform Library

To not lose time trying to create a project that not capable of publishing its artifacts to Bintray, I decided to fork an existing kotlin-multiplatform project: https://github.com/Kotlin/kotlinx-io

For my first library, I decided to implement a simple Logger, which will use Logcat on Android, and print on iOS. I will not implement the JVM version, either the JS on my libraries, I will only focus on these 2 mobile platforms

A lot of Best Android kotlin Libraries available on multiple platforms like GitHub Facebook groups

stack overflow a lot of others.

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