TOP 10 Most important Android Interview Questions and Answers

Before going to start our first android app, we need to know some of the terms or questions related to android that are generally asked during interviews.

So, let’s discuss some of them.

Question 1: What is Android? What is the latest version of Android? List all the versions of Android.

Android is a mobile operating system developed by Google. Android is based on Linux Kernel and designed generally for smartphones and tablets.

The latest version of Android is ANDROID 10, releases on September 3, 2019.

List of all android versions:

• Android 1.5 — Cupcake — 2009
• Android 1.6 — Donut — 2009
• Android 2.0–2.1 — Eclair — 2009
• Android 2.2–2.2.3 — Froyo — 2010
• Android 2.3–2.3.7 — Gingerbread — 2010
• Android 3.0–3.2.6 — Honeycomb — 2011
• Android 4.0–4.0.4 — Ice Cream Sandwich — 2011
• Android 4.1–4.3.1 — Jelly Bean — 2012
• Android 4.4–4.4.4 — Kitkat — 2013
• Android 5.0–5.1.1 — Lollipop — 2014
• Android 6.0–6.0.1 — Marshmallow — 2015
• Android 7.0–7.1.2 — Nougat — 2016
• Android 8.0–8.1 — Oreo — 2017
• Android 9.0 — Pie — 2018
• Android 10–2019

Question 2: What is an Activity?

An Activity is the screen representation of an application in Android. It basically uses as the entry point of the user’s on the application. Each activity has a Layout file in the XML form, where you can design your UI (User Interface). An activity is implementing as the subclass of the Activity.

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