Top 10 Mobile App Developer Interview Questions You Should Be Asking Your Applicants

It is possible to mobile developer several instances for the same activity. This launch mode generates an activity’s new instance in the task from which it originated. An Explicit Intent is where you inform the system about which activity should handle this intent. This application context is attached to the lifecycle of an application. Class is a compiled form of a .java file that Android uses to produce an executable .apk file. Android Applications – Applications like home, games, contacts, settings, browsers, etc. uses the Android framework that will make use of Android runtime and libraries. Explain about java classes related to the use of sensors on Android.

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Most apps must be available on more than one OS, so experience reconfiguring or migrating an app from one platform to another is a very valuable treat. Tell about your experience in this field and detail the apps you have reconfigured and the solutions you have found to do it. If you don’t have any experience, expose the reasons why you think you are technically prepared to do it. If your app will be free for the first little while, then your developer should have an understanding of mobile advertising networks. One of the fastest ways to grow as a developer is to have other people read and comment on your code. Frequent code reviews mean the team is committed to getting better. The foreground activity, being the most important among the other states, is only killed or terminated as a last resort, especially if it is already consuming too much memory.

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Your program continues to run, and a “callback” function is then called when the server responds to the call. The weaknesses of Android stem from one of its strengths, namely that it is available everywhere and can run on a wide variety of devices. Here, the intent does not define the target component, requiring the Android system to evaluate the components. Android mainly uses Java and Kotlin but also supports C / C ++, which will run faster when used with the Android SDK. SQLite, a standalone open-source serverless database, is built into Android by default.

  • Things do not happen “automagically”, nor is working with raw NSDictionaries appropriate and maintainable.
  • Interview questions and answer examples and any other content may be used else where on the site.
  • The current version of Android is 9.0, also called Android Pie, and it came out in August of 2018.
  • If you have previous experience working with multiple operating systems, explain what you like about each one.

We’ll also provide tips on how to prepare for your interview and showcase your skills and experience. Push notifications within a mobile application are a double-edged sword. They can be useful to notify the user of issues they need to be aware of, input the application requires, and other actions the user needs to take.

What is your experience developing Progressive Web Applications or PWAs?

Interview questions and answer examples and any other content may be used else where on the site. We do not claim our questions will be asked in any interview you may have. Our goal is to create interview questions and answers that will best prepare you for your interview, and that means we do not want you to memorize our answers. You must create your own answers, and be prepared for any interview question in any interview.

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Working with the iOS platform, developers should be familiar with techniques, architecture, and design patterns commonly used on iOS. We might think the apps we build are something special because they cover a unique use case. But your typical iOS application is just a giant, glorified run loop. It waits for user input and gets interrupted by external signals such as phone calls, push notifications, home gestures/button presses, and other app life cycle events. Employers ask this question to learn more about your skills and experience.


The first response will help the employer perceive that your preferences are the same as theirs. The second will demonstrate that you can bring new ideas to its programming environment. 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. 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. One app that runs on this particular version of Android OS may or may not run on another version.

You may want to follow up your answer with a question, asking the interviewer what continuing education programs and opportunities the organization offers to its software development team. When responding to a behavioral question, you can use the STAR framework. State the situation, describe the task you were trying to achieve, discuss the actions you took, and then talk about the results. Your due diligence is important when hiring mobile app developers. The trouble is, if you’re not familiar with mobile app development, you might not know which questions to ask.

  • As a conversation partner, you need to be willing to present yourself in a good light, which is really difficult to do within an hour or so of the conversation.
  • This is a fundamental design pattern Apple keeps pushing onto iOS developers.
  • Expect this question either on Swift features, or as a bigger architectural and conceptual discussion question.
  • Even though some mobile developers will readily admit that they work best on their own, organizations prefer developers who are good at collaboration.