Android Operating System Interview Questions And Answers Pdf

android operating system interview questions and answers pdf

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The Android mobile Operating System developed by Google was initially released in , and saw its latest release in August , with 9.

Top Android Interview Questions and Answers

These days everyone is aware of android because it has a huge market all over the globe. Google, the parent company of Android, hire developers from across the world for further Android development. Even the Android which has an infinite number of Applications on its play store promising a bright future to its developers. Many techs and non-tech companies are releasing their own Android applications to increase their reach in the market. Now having an android application has become like having a website for your company.

If you are an android developer and preparing for an upcoming interview, we suggest you go through these Android interview questions and answer, so you could ace the interview.

Here in this article, we have provided the technical answers of Best Android interview questions, which you might face during the interview. Answer: Android is an open-source Operating System used by touch screen mobile devices and tablets and it is based on Linux Kernel. Answer: Q Android Answer: Android SDK Software Development tool is a tool used by the Android developers to create an application for the android platform, basically, it is used to emulate an Android environment.

This is a very handy tool you can test how would your application run on Android mobile devices. Answer: In Google has announced Kotlin as its Official language for Android development before that there was no official language for Android and developers would use Java to develop Android application.

Android support both Java and Kotlin. APK Android Application Package which is also known as the android app file extension, it is a compressed file format which contains all application code, resource files, certification and other files. All the application files are compressed in once so that it is easy to distribute and install. Answer: An activity is defined as the GUI of a single screen which performs an action on the screen, a complete application is made up of many activities.

For example, if we have created an email application so its inbox interface would be an activity and its Draft interface would be another. Answer: It is one the most important layer of Android architecture which provides many high-level services to the application in the form of Java Classes some of these services are Activity manager, Content Provider, Resource Manager, Notification Manager, View System and lots more.

Answer: When the user rotates the screen the instance of the current activity gets terminated and a new instance gets created simultaneously. Answer: Intent aka intention, is used to perform actions. It is an object that sends message to the other components of the application and request for some action. Implicit Intent: In implicit intent, the android decides which component to target based on the evaluated data. Answer: Implicit intent used when a user performs an action, for example, send a message, dial a number on the dial pad.

Answer: Containers, as the name itself implies, holds objects and widgets together, depending on which specific items are needed and in what particular arrangement that is wanted. Containers may hold labels, fields, buttons, or even child containers, as examples.

Answer: ANR stands for Application Not Responding, this is used when the application main activity does not respond for a while. It depends on some conditions like if there is no response to input after 5sec or the broadcast receiver is not done executing within 10 seconds. Answer: AAPT stands for Android Asset Packaging Tool, it helps the developer to handle zip-compatible archives, that can create, extract and view the contents.

Answer: We use HashMaps like structure such as Bundles to carry trivial data from one activity to its sub-activities. Answer: WebView is a window or view which is used to show web pages inside an android application, it gives a browser look to the application. WebView uses WebKit rendering engine to display web pages and it also includes some navigation tools like forwarding, backward and history.

Answer: Context is a class that handles the current state of the running application, it provides services like resolving resources, get access to the database and so on.

Question: How can we clear the back stack of Activities when a new instance of an activity is called? The content provider is used to providing data from one application to another when it requested. It manages the structured set of data and also provides data security. Answer: No, but we can compress it into Android Package. Answer: A fragment is a modular form of activity and it can also be understood as a part of Activity which can combine with other fragments in a single activity which makes it reusable.

Answer: Dalvik is a virtual machine in android which executes the code and runs the application it can also execute the multiple virtual machines. Answer: Android Service is used to perform the operation in the background such as playing music, though it does not provide any User interface. Toasts come useful when there is an ongoing process and we want to show the processing message without affecting the current activity and display. An android framework consists of various tools which include UI designing, and System tools.

Question: Explain the various important files and folders created during the new app. To perform a sticky intent we use the sendStickyBroadcast method. It got its name because the intent will stick around even after the broadcast is complete. Activity: Activity can be treated as a signal which deals with operations performed by the user such as dialling a number, clicking a picture, sending mail, etc.

And a fragment can be affected by its parent activity. Question: Why it is recommended not to change the application name after deployment? However, in the development and deployment process doing so is not recommended because it can affect some of the application functionality which could result in application failure and break. Similarly to its predecessor Dalvik, ART was designed specially for android projects.

It is capable of executes the Dalvik Executable format and Dex bytecode specification. The activity gets created and destroyed according to the triggered events.

A dailog window does not cover the screen completely, and simply provide a popup small window for decision and input entry. Answer: Orientation is an activity which is used to represent the layout of a screen display in the form of row and columns. The main reason why every device does not get the latest version is because of its hardware specification. With this, we have reached at the end of our top Android interview questions.

We hope you like this article, and you get to know something new. If you have ever been in an Android job interview please comment down the technical questions you faced during the interview, and we try to answer them.

We hope these Android questions help you to crack the interview. Your email address will not be published. Appium Installation Process. How to make an App. Leave a Reply Cancel reply Your email address will not be published.

If an application stop executing it is not necessary that service will also stop its execution.

Android Interview Questions

Android programming is growing day by day. The questions asked by interviewers in android is given below. A list of top android interview questions and answers:. Android is an open-source, Linux-based operating system used in mobiles, tablets, televisions, etc. It makes the performance faster. It should be used with Android SDK.

Top 50 Android Interview Questions You Must Prepare In 2021

Dear readers, these Android Interview Questions have been designed specially to get you acquainted with the nature of questions you may encounter during your interview for the subject of Android. Android is a stack of software for mobile devices which includes an Operating System, middleware and some key applications. The application executes within its own process and its own instance of Dalvik Virtual Machine. Activity performs actions on the screen.

Android Interview Questions

These days everyone is aware of android because it has a huge market all over the globe. Google, the parent company of Android, hire developers from across the world for further Android development. Even the Android which has an infinite number of Applications on its play store promising a bright future to its developers. Many techs and non-tech companies are releasing their own Android applications to increase their reach in the market. Now having an android application has become like having a website for your company.

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Tom M.

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It is an open-sourced operating system that is used primarily on mobile devices, such as cell phones and tablets.

Sven F.

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Rachael J.

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There are four Java classes related to the use of sensors on the Android platform.

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