Making our Android Studio Apps Reactive with UI Components and Redux

As of late Netflix has begun building versatile applications to carry innovation and development to our Studio Physical Productions, the part of the business in charge of creating our TV shows and motion pictures.

Our absolute first portable application is called Prodicle and was worked for Android and iOS utilizing the equivalent responsive design in the two stages, which enabled us to construct 2 applications starting with no outside help in 3 months with 4 programming architects.

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The application helps creation teams sort out their shooting days through shooting achievements and keeps everybody in a generation educated about what is as of now occurring.

Here is a shooting day for Glow Season 3.

We’ve been trying different things with a plan to utilize responsive segments on Android throughout the previous two years. While there are a few structures that actualize this, we needed to remain extremely near to the Android local system. It

was critical to the group that we didn’t totally change the manner in which our specialists compose Android code.

We accept receptive segments are the key establishment to accomplish composable UIs that are versatile, reusable, unit testable and AB test inviting. Composable UIs add to quick designing speed and produce less side impact bugs.

Our present player UI in the Netflix Android application is utilizing our first emphasis of this componentization engineering. We accepted the open door with structure Prodicle to enhance what we realized with the Player UI, and fabricate the application without any preparation utilizing Redux, Components, and 100% Kotlin.

By and large Architecture

Parts and Activities

Having enormous Fragments or Activities causes a wide range of issues, it makes the code hard to peruse, keep up, and expand. Keeping them little assists with code embodiment and better detachment of concerns — the introduction rationale ought to be inside a segment or a class that speaks to a view and not in the Fragment.

This is the means by which a perfect Fragment looks in our application, there is no business rationale. During the onViewCreated we pass pre-expanded view holders and the worldwide revival store’s dispatch work.

UI Components

Segments are in charge of owning their own XML format and blowing up themselves into a holder. They actualize a solitary render(state: ComponentState) interface and have their state characterized by a Kotlin information class.

A segment’s render strategy is an unadulterated capacity that can without much of a stretch be tried by making a stage of potential states changes.

Dispatch capacities are the manner in which parts fire activities to change application state, make system demands, speak with different segments, and so on.

A segment characterizes its own state as an information class in the highest point of the document. That is the manner by which its render() work will be conjured by the render circle.

It gets a ViewGroup compartment that will be utilized to blow up the part’s very own design document, R.layout.list_header in this model.

All the Android perspectives are instantiated utilizing a languid methodology and the render capacity is the one that will set every one of the qualities in the perspectives.


These segments are autonomous by structure, which means they know nothing about one another, however some way or another we have to design our parts inside our screens. The engineering is entirely adaptable and gives various methods for accomplishing it:

Self Inflation into a Container: A Component gets a ViewGroup as a compartment in the constructor, it blows up itself utilizing Layout Inflater. Valuable when the screen has a skeleton of holders or is a Linear Layout.

Pre expanded perspectives. Segment acknowledges a View in its constructor, no compelling reason to expand it. This is utilized when the design is possessed by the screen in a solitary XML.

Self Inflation into a Constraint Layout: Components expand themselves into a Constraint Layout accessible in its constructor, it opens a getMainViewId to be utilized by the parent to set imperatives automatically.


Revival gives an occasion driven unidirectional information stream engineering through a worldwide and concentrated application express that must be changed by Actions pursued by Reducers. At the point when the application state transforms it falls down to every one of the subscribed components.

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