Mobile App Developer Interview Questions

Do All Mobile Phones Support The Latest Android Operating System

Some Android-powered phone allows you to upgrade to the higher Android operating system version. However, not all upgrades would allow you to get the latest version. It depends largely on the capability and specs of the phone, whether it can support the newer features available under the latest Android version.

Mobile App Developer Interview Questions And Answers

Learn what skills and qualities interviewers are looking for from a mobile app developer, what questions you can expect, and how you should go about answering them.

Mobile app development is a rapidly growing field, and companies are always on the lookout for talented developers who can create innovative and user-friendly apps. If youre looking for a job in mobile app development, youll need to be prepared to answer some tough interview questions.

In this guide, well provide you with a list of common mobile app developer interview questions and answers. Well also provide tips on how to prepare for your interview and showcase your skills and experience.

Are you comfortable working with a team of developers to create a single product?

This question can help the interviewer determine how you might fit into their company culture. Teamwork is an important skill for mobile app developers to have, so its likely that your potential employer will want to know that youre willing and able to work with others on a project.

Example:Ive worked in teams of up to five other developers before, so Im comfortable collaborating with others to create a single product. In my last role, I was one of two lead developers who managed the entire development process from start to finish. We had weekly meetings where we discussed our progress and any challenges we were facing. This helped us stay organized and ensure that we met all deadlines.

How Can Sensitive Data Like Contacts Or Access To The Camera Be Secured In The World Of Mobile Apps

Access to a users data or sensors is restricted by a permissions system. That means that when the app wants to use a feature like GPS, it has to ask the user for permission and explain why this permission is necessary.

The user can agree, or reject the request. The developer must foresee rejecting and provide a way to still use some of the apps features, which can work without the rejected sensor or data. Permissions can be granted or denied not only when the app is run but also from the users settings, so the app has to always check for it.

The permissions mechanism can change between OS versions, so the developer has to be aware of that. For example, on Android below version 6.0 , permissions were declared in AndroidManifest.xml, and users granted all of them during the apps installation.

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Tell Me How You Go About Designing A Menu And How The User’s Device Interprets It

How to Answer

When designing menus used by applications native to a computing platform or web browser, the developer has a great deal of latitude due to the user interface’s size and flexibility. This changes when developing applications and menus for mobile devices. Your face is generally smaller, so the information needs to be provided in a specific manner. This question incorporates both technical and operational elements of mobile application development. Remember to keep your answer brief and to the point and anticipate follow-up questions if the interviewer wants to explore this topic in more detail.

Written by William Swansen on September 5th, 2021

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Give Me Examples Of When You Elect To Use Infinite Scroll And Pagination

How to Answer

Another way an interviewer can ask you a technical or operational question his request that you provide examples. The answer to this question is similar to when you are asked to discuss or describe a technique or methodology. If possible, you should try to provide examples similar to the features of the applications you are likely to be working on for the organization. Remember to keep your answers brief and to expect follow-up questions from the interviewer.

Written by William Swansen on September 5th, 2021

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Top 35 Android Interview Questions And Answers

Basic Android interview questions for freshers and experienced developers and testers:

In this technological era, there is a huge demand for Android Application developers and it is one of the highly paid jobs too.

Hence many tech-savvy people are trying to make their way into this career. There are several tricky interview questions that are asked in many MNCs and some small scale companies. And this article includes a set of such Android interview questions and answers that will be helpful to millions of job seekers.

Lets Explore!!

This article includes a set of most commonly asked android interview questions and answers covering almost all the important concepts in simple terms in order to enable any job seeker to clear the interview successfully.

Explain To Me What Anr Is And How You Plan To Sidestep It

The term ANR means the application is not responding. It pops up when a mobile app stops responding for more than 10 secondswhich notifies through a dialog box.

One way to avoid this is to lessen the number of activities performed by the core UI thread. Hence, it has become standard practice among developers to build separate threads for resource-draining activities. So, the applicant should have this knowledge in their repertoire.

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How Will Maintenance Of The App Work

Remember we mentioned the part about not being in communication with your mobile app developer? If all goes well, you will have hired a professional mobile app developer with whom you can establish a professional working relationship. More importantly, they will be there for you long after the app is sent to the app store.

Keeping users engaged, keeping up with bug fixes and updating app versions is part of the maintenance process. No one knows the ins and outs of your app better than your mobile app developer.

Ask them how maintenance support programs are structured, and how they will address changes to the app as needed. Also, find out how much it costs. Most developers will charge by the hour.

Why Hire An Ios Mobile Applications Developer

Is it possible to imagine our lives without our favorite apps? Agree or not, they are a part of our life now. But hiring an iOS Mobile Applications Developer is certainly not a cakewalk. Industry stats say that skilled iOS Developers are extremely rare to find in the job market. Thats why we have the job easy for hiring managers.

According to CNN Money, Mobile App Development is the best job in the United States. But how to hire a good Mobile App Developer? Through this blog, we answer everything you need to know about hiring top talent in this field. Read on to reinvent the way Mobile Applications Developers are hired.

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What Are Your Insights On Cross

Youre listing the popular tools when it comes to cross-platform app development. And this question will gauge the applicants knowledge on these tools, which can make or break your success. So make sure to stir out specific answers from the professional to see how they can incorporate their knowledge directly into your project.

Applications Developer Interview Questions

Question: Tell me how would you explain object-oriented programming to a person who didnt have a technical background?

Explanation: This is a general question that the interviewer will use to start a conversation, collect some information about you, and gain a better understanding of your background. General or opening questions provide you with the opportunity to steer the interview in a direction that you would like it to take. Your answer can prompt the interviewer to ask additional questions which you should be able to answer easily.

Example: “I find the best way to communicate with anybody, regardless of their background, is by using clear and easy-to-understand language. When explaining technical ideas to somebody without a scientific background, I go out of my way to break the topic down into easily understandable concepts without using acronyms or industry-specific terms. I would explain object-oriented programming as a technique that saves time and simplifies programming by utilizing common functions. For example, a program to fill in a form can borrow code from a program that creates general documents.”

Question: What APIs do you have experience with that will apply to the programming you will do in this role?

Question: What are the resources you use when researching a solution to a complex programming issue?

Question: Can you discuss the agile methodology of software development and talk about its advantages and disadvantages?

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Tell About A Time When You Worked On A Project To Improve An Existing Application

How to Answer

An interviewer will ask you this question to learn about your ability to analyze existing applications and identify issues or improvement opportunities. Many developers are skilled at writing their own code but struggle when analyzing code written by somebody else. Programming is as much of an art as it is a science. Every developer has their own style and uses a different approach to creating software, even though they use the same language and platforms. When answering a question like this, you should be specific and provide an example to illustrate your answer.

Written by William Swansen on September 5th, 2021

1st Answer Example

“In my last job, one of my first assignments was to analyze a program the company had already released to the market and determine what improvements could be made. This required me first to understand the programming style of the team that originally wrote the program, so I could determine their approach to accomplishing the functions of software performed. I was then able to find ways to make the code more efficient and enhance the user experience. This resulted in a new revision of the program, which created new revenue opportunities for the organization.”

Written by William Swansen on September 5th, 2021

Behavioral

What Are Your Fees Rates And Terms

Listen for how they want to set up the project. Is it time and materials or flat-rate? Be very careful if they want to go flat-rate with you. At Ascendle, we always set projects up on a time and materials basis because it allows the flexibility you need in mobile development especially when your needs change halfway through.

Follow-up questions:

• For what reasons do you bill based on time and materials ? What happens if my needs or requirements change during the project?
• How are your fees tied to milestones and performance?
• What if Im not satisfied with the projects outcome or how the project is proceeding? How will you / we resolve this?

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When Do You Choose A Hamburger Menu And How This Is This Pattern Interpreted By The User

Due to the fact that mobile design is constrained by the small size of mobile devices and their displays, its of vital importance that we present the information properly, and adequately prioritize content. It is very important to make sure this is done at this stage, before we proceed to mockup design, because thats a matter of UX rather than UI design.

Its also important to decide which information we provide first and which one will remain hidden. In order avoid hiding content, we can use different patterns like tabs, filters, and so on, while still providing the user with the most important information at the time. Its a bad practice to use hamburger menu even though sometimes we are forced to use it due to the massive amount of data that needs to be displayed. Based on research, we can conclude that the hamburger icon easily gets lost in the design, because many users tend to start scrolling immediately. Its in our nature to scroll and that why its important to make sure everything important is presented to the user at a glance.

According to a study by Nielsen/Norman Group, a global leader in user experience research, training, and consulting, hidden navigation patterns decrease content discoverability by 21% and increase the amount of time it takes to actually use navigation by 2 seconds on average.

An example of tabs

What Are Your Preferred Content Management Systems

Most candidates will have experience with a popular content management system like WordPress or Joomla. If so, ask them to tell you about any themes or modules they built. Some candidates might have experience with headless CMS, which does not have a front-end interface, or decoupled CMS, where the front-end and back-end communicate through an API layer.

Experience in headless or decoupled CMS sends a strong signal that the candidate has advanced web development skills.

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What Are The Differences Between Quality Assurance And Quality Control

Similar to the previous question, this is also asking for definitions of technical terms related to the development process. A well-explained answer here further shows they understand the software development process. This also shows that they are able to measure quality properly throughout the project. The ideal candidate can explain both of these quality testing processes and how they differ when answering this mobile testing question.

Can You Explain The Different Uses For Manual Tests And Automated Tests

Understanding when to use each of these tests is important because it can save time and produce more accurate results. Describe what the primary uses are for each test in your answer.

Example:”Professionals typically use automatic tests when they need to complete multiple mobile app regression tests. This can save a significant amount of time, especially in critical scenarios. However, if an application only requires a few rounds of tests, many professionals opt to use manual testing methods instead. For example, if I need to test a new function for an existing application, I might choose to run manual tests instead of automating them.”

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Additional Applications Developer Interview Questions

• What projects have you worked on independently? What projects have you undertaken as part of a team?

• What coding languages do you use? How do you keep up to date with current technologies and practices in your field?

• What is your experience in presenting your work to clients?

• How do you ensure an application will be user-friendly?

• Are there any particular types of applications that are your specialty?

• What is an application you use that you would have liked to have worked in the development process for?

• What is your least favorite application? Why? How would you go about fixing it?

• What previous work are you the proudest of? Explain why.

• Describe a time when you had to work with a difficult team member. How did you work through disputes?

• If you were to lead a team of developers, how would you motivate them?

What Are The Biggest Challenges Of Working On The Front End Of An Application

Web developers work closely with the rest of the development team. They understand how data is structured, what functions are available, how APIs are called and how web services are configured. This interview question will help differentiate between a developer and someone who is more of a designer.

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Whats An Intent In The Context Of Android Describe The Different Types

Much what it sounds like, its the intention to perform an action, a message that is passed between components. Intents request actions from a different component, such as sending an email, opening a web page, or launch a given activity. The two types are:

• Implicit Intent

  This is where the intent doesnt define the target component, requiring the Android system to conduct an evaluation of the components.

• Explicit Intent

  On the other hand, the explicit intent directly identifies the target component.

What Types Of Tests Do Professionals Typically Perform When Following The Standard Android Strategy

It’s important for mobile app testers to be familiar with how to test applications on different operating systems. A hiring manager may ask you this question to assess how familiar you are with apps specifically designed for Android devices. List each of the tests you’d typically perform to answer this question.

Example:”The standard Android strategy involves four primary tests. These tests include the integration test, the unit test, the system test and the operation test.”

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Interview Questions With Sample Answers

Though it’s important to consider the questions a hiring manager might ask you during an interview, it’s also important to review sample answers. These sample answers can give you a starting point for answering the interview questions based on your own experience and knowledge. Here are some developer interview questions and sample answers for your consideration:

How Do You Deal With Input Fields On Mobile Designs Why Are They Important How Do They Affect The End

Input fields are a very important aspect of mobile design. We tend to take them for granted, especially when designing small websites or mobile apps.

When we need to design a corporate website where we have more than one contact form, then we should reconsider and reimagine these small elements. The whole point of doing this makes them invisible to the end-user, allowing users to focus on more important things. We dont want our users to leave at a crucial point in their journey, when they need to input information or maybe even make a purchase. This usually happens on e-commerce websites when the user is required to fill in too many fields in order to complete the transaction. The trend is to streamline the process, and big players are getting involved with mobile wallet solutions as well.

For mobile design, it is important to provide clear, always visible labels for each input field. Clear labels make users feel more confident that they understand information in the right way, promting them to take action.

Data comes in many formats. Of course, we think that you should always try to design input fields in a way that resembles how users typically enter information. For instance, the phone number field can be auto-formatted. This eliminates any formatting ambiguity the customer may have had.

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