Becoming an Android developer is not a piece of cake. The demand for competent Android developers is increasing immensely. Therefore, you must prepare well for the Android interview questions that will be asked in your final interview. It also includes Android studio interview questions you must prepare well before sitting for your final interview.
Although you cannot achieve 100% success of the time, you may increase your chances by getting familiar with some of the most important mobile application development interview questions. An excellent selection of Android basic interview questions covering all difficulty levels are in this post. You may improve your confidence and appearance by being familiar with the following inquiries.
Continue reading and exploring to discover the best cheat Android developer interview questions you must prepare for guaranteed employment.
Table of Contents
Who is an Android Developer?
Concerning online apps, creating a mobile application is a more complex undertaking. The operating system has an impact on the creation of Android apps as well. For instance, mobile apps for iOS and Android are completely different. Three main categories of mobile apps exist. Android Studio for Python, the Android Software Development Kit (SDK), Windows, the Android SDK Mac, and Android SDK Linux are a few of the main tools for Android programming.
Developers design native applications for Android to run on specific operating systems like iOS or Android, using the available languages and tools of each operating system. You can create these apps using the operating system’s available languages and tools. For instance, Android utilizes Eclipse and Java, whereas iOS utilizes Objective-C and Xcode.
Applications built using HTML5, CSS, and JavaScript may be created and executed on any platform. They have to do a minor tweak to adapt to every operating system. Hybrid applications: HTML, JavaScript, and CSS are used to create hybrid applications. They are referred to as the native browser’s programs. Let’s discuss the benefits and drawbacks of Android before discussing Android interview questions.
Benefits of Android
- Open-source refers to the absence of development, licensing, and distribution costs.
- The Android SDK and studio development platforms are independent of platforms. Developers can create Android apps for any operating system using the Android development environment and Android SDK.
- Android highly optimizes the Dalvik Virtual Machine (DVM), which it uses on mobile devices.
- Starting with Android Lollipop 5.0 (API level 21), Android has implemented the Android RunTime (ART) virtual machine to execute apps, replacing the DVM virtual machine.
- Millions of applications are accessible: You can download and install millions of Android applications on the smart mobile from the Google Play application store and other third-party shops.
Also Read: Mastering the Android Developer Jobs: Essential Questions and Best Practices
Drawbacks of Android
- Several programs aren’t real and can try to steal your data once they’re installed.
- Different Android operating systems are perhaps more significant than screen sizes and shapes regarding the variety of Android smartphones on the market.
- A program that functions well on one Android OS version may malfunction on another.
- Most Android apps operate exclusively in the background and only sometimes appear at the front of the screen. Apps operating in background mode now have restrictions on how much access they can have to background services as of Android 8.0.
- Few apps use mobile batteries in the background, which causes your device’s battery to drain rapidly.
- Alarming internet speed and excessive data use are caused by the numerous background operations that Android phones conduct, which can lead to a bad data connection. It may be rather frustrating at times.
Top 20 Android Interview Questions in 2024
The first step is not preparing your CV and seeking employment as an Android developer; it’s passing the interview and effectively showcasing your skills. Here are 20 typical questions from mobile application development interview questions to help you get ready for your examination:
Which Android Version Is The Most Recent? Enumerate All Of The Android Versions
August 15, 2022, saw the introduction of the most recent version, Android 13, while the newly released Android 12.1/12L brings new features for Chromebook devices, tablets, desktop displays, and foldable phones. Google created the Android smartphone operating system. It is primarily made for touchscreen handheld gadgets such as tablets and smartphones and depends on the Linux kernel. The names of all other Android versions are either sweet or dessert-related.
Also Read: Android Version List: A Complete History and Features
Concerning Emulators, What Makes Having One Available To Developers So Crucial?
Developers have an excellent dedicated “sandbox” to securely design, modify, test, and debug new programs, seeing how they would perform on an actual device without risking a real device, as emulators work like an actual mobile device.
What Functionalities Does Android Offer?
By releasing a product that enhances everyone’s mobile experience, Google has transformed everyone’s life. Android offers a variety of options, such as launchers, themes, and wallpapers that radically alter the appearance of your device’s interface to help it learn your preferences and needs.
Android is feature-rich. Here are a few of the features:
- Adaptable operating system
- You can create numerous applications.
- Lowers the overall level of complexity
- Supports media, web browsers, messaging services, storage (SQLite), connection, and other features
NOTE: This is one of the most common and most popular Android interview questions.
Why Does Android Frontend Development Require XML?
Extensible Markup Language is also known as XML. Comparable to HTML, XML is a markup language employable to describe data. Computers and people alike can easily read the XML itself. It is also easy to create and scale. Because XML is a compact language that doesn’t add weight to our layouts, we use it to build layouts on Android.
Also Read: Android Developer VS Web Developer: Which is the Best Choice to Make More Money
Which Languages Are Most Often Used On Android?
This one is one of the more straightforward Android interview questions for Android developers. Be prepared with a list of your familiar languages, such as Java, Kotlin, C#, Python, and Groovy. You may add Integrated Developmental Environments (IDEs) like Eclipse, Net Beans, IntelliJ, and Android Studio to your list for bonus points.
An Activity: What Is It?
In Java, an activity is one window that serves as a GUI (Graphical User Interface) that users may interact with to do various tasks, such as viewing emails and making phone calls.
One instance of such activity is the Facebook start page, where you must enter your password and email address to log in.
What Does An Android Service Mean?
A service is an element of an application that makes it possible for an application to operate in the background and carry out laborious tasks without requiring user input. Even if the user closes a program or opens another, a service can continue to operate in the background.
In The Context Of Android, What Is An Intent? Explain The Many Kinds
A component sends a communication, together with the desire to act. Intent requests a distinct component’s activities, such as sending an email, accessing a webpage, or starting an activity. There are two categories:
- Implicit Intent: In this case, the Android system must evaluate the components because the intent does not specify the target component.
- Explicit Intent: Conversely, the target component is identified directly by the express aim.
Also Read: AI Apps: Apps Shaping the Digital Landscape
What Does The APK Format Mean?
It is also one of the most important Android interview questions you must prepare. An APK file or Android application package is the compact file format used to distribute and install middleware and app software on Google’s Android operating system. The file, which has the .apk extension, contains the compressed app code, resource files, documents, and other files.
What Is The Android Activity Life Cycle?
The user switches between screens and applications, which occur at different life cycle stages. Thus, an Android.app activity lifecycle has seven distinct methods.Class activity, i.e.
- onCreate(): The activity starts at this point.
- onStart(): This callback function triggers as soon as the user can see the action.
- onResume(): The user can engage with the activity when it is in the forefront.
- onPause(): A portion of the activity can hide through another activity. There is more foreground action that is semi-transparent.
- onStop(): The user cannot see or access the activity.
- onDestroy(): This function eliminates and expunges the activity from memory.
What Does An Android Adapter Mean?
In Android, an adapter serves as a link between an AdapterView and the view’s underlying information. The data has a storage on the adapter and is sent to the adapter view. The view then uses the data from the adapter view to display the data in various ways, such as a grid view, list view, spinner, etc.
Also Read: Coding Careers: Top 5 Interview Questions and Expert Answers
What Is AAPT?
Android Asset Packaging Tool has become known as AAPT. With this build tool, developers may browse, generate, and update ZIP-compatible packages (zip, jar, and APK). The resources are parsed, indexed, and assembled into an Android platform-optimized binary format.
Which Four Vital Activity States Are There?
This is also one of the most important Android interview questions you must prepare. The following four states are:
- Active: The activity operates at the forefront and the top of the stack.
- Paused: The background activity remains visible, but the user cannot accept events.
- Stopped: Because the action cannot be seen, it is suspended, covered up, or hidden by another activity.
- Destroyed: The action has stopped, finished, or ended.
Describe DDMS. List A Few Of Its Functions
The Dalvik Debug Monitor Server (DDMS) is pre-installed on Android devices. It offers several debugging capabilities, such as:
- Services for port-forwarding
- Screenshot
- Information in a thread and heap
- Monitoring of network traffic
- Spoofing incoming calls and SMS
- Modeling latency, speed, and status of the network
- Location data spoofing
Also Read: Application Server: Understanding Their Role In Modern Tech
What Distinguishes An Android File, Class, And Activity From Each Other?
The following are their differences:
- A file is an arbitrary chunk of data or a resource used to store data. You can use any file.
- Android employs a compiled Java file class to create an executable APK.
- In GUI toolkits, an activity is a Frame or Window. It is only a class that may expand in Android to load UI components on view; it is neither a file nor a file type.
What Does Android’s Toast Mean?
A toast is a brief alert message appearing on the Android screen. When we take any action in our app, Android Toast is a brief pop-up notice that shows information. It vanishes on its own. A notification is used if the user wants the message to be displayed at all times.
What Does Android’s PendingIntent Mean?
A PendingIntent gives an application that handles the execution of future intent. Because they may define actions to another app, pending intents are an essential component of the Android architecture. It’s a good idea to discuss implementation specifics and the new mutability-related improvements in Android 12 in your response to Android interview questions.
Also Read: App Marketing: Strategies to Boost Your Downloads
A Content Provider: What Is It?
Content suppliers between various Android applications share information. They make data accessible to consumers through an application. Examples include music, videos, pictures, and contact details.
Describe ANR
This stands for program Not Responding, a pop-up or message that appears when the user experiences lag time in the program due to too many functions running simultaneously.
A Sticky Intent: What Is It?
The transmit sticky broadcast() function is currently used for this broadcast. After the broadcast, the intention endures, enabling others to get information from it.
Conclusion
The above-mentioned Android interview questions are the best and most asked questions in every Android developer interview. It concludes our discussion of Android interview questions in this blog. The most in-demand skill sets employers seek in an Android developer are the ones you learned about in our post on Android developer interview questions. You will undoubtedly ace your job interview with this collection of mobile application development interview questions. We hope your interview goes well! Moreover, if you are experiencing difficulties answering these Android basic interview questions, kindly share your thoughts in the comment section below.