Android is an open source versatile stage sent off by Google in 2008 and since it turned into the #1 for individuals and engineers all over the planet. Android is Linux based multiprocess and multithreaded OS. Google’s Android OS isn’t restricted to telephones yet you can utilize it to fabricate a DVR, a handheld GPS, a MP3 player and so forth.

In spite of the fact that Android stage is an open source and adjustable, Android clients and engineers have become ongoing to the builds created by Google for Android gadgets. The utilization of these Android ideas is indispensable for fostering an application rapidly.

Key Concepts of Android are:-
Applications and APK Files
Exercises
Parts
Sees and ViewGroups
Design XML Files
Aims
Gadgets
Administrations
Sensors

I’m providing you with an outline of the Android key ideas. In the wake of having an essential comprehension of Android’s key ideas you can go further into the different various subjects.

Applications and APK Files

An Android application is an Android Application. An application is bundled in an APK record for example Android application bundle. The APK record contains the aggregated Java code and different assets like pictures and texts for the Android application

Exercises

An Android action is a GUI part. You can figure out it as a window in a work area application. As cell phone screens are little, an action takes up the entire screen. On the off chance that you open various exercises, they are stacked on top of one another. You can’t orchestrate exercises one next to the other like you can do with work area windows.

Exercises are interesting, centered moves which a client  radio manele can make. As it is challenging to scroll, zoom in or click joins on a little screen consequently it is suggested that an application show just a single movement for every screen. This will introduce the most significant data to the client and permits them to send off another screen for extra data or snap the back button to see the past movement. The screen can uncover various undertakings yet it ought to assist the client with finishing only each action in turn.

Parts

In Android, a part is a piece of an all out UI. A piece just takes up piece of the screen. Parts are utilized in the exercises. Parts can likewise be utilized inside various exercises. Parts contain Views and ViewGroups inside them.

View and ViewGroups

Android GUI components come into three classifications for example Exercises, Views and ViewGroups. Exercises are the windows/screens. Sees are the singular GUI components, similar to a TextView which shows a text, a Button that clients can tap on and so forth. ViewGroups are holders for Views. A ViewGroup really gathers an assortment of Views together. Sees and ViewGroups can be settled inside an action or inside even a piece which is settled inside a movement.

Design XML Files

Exercises, parts and ViewGroups can utilize XML documents to characterize their design and items. The format XML records tell which GUI parts a movement or piece contains and furthermore the styling of the GUI parts for example The size, edges, cushioning and so forth.