However, they can also be intrusive, distracting the users and degrading the user experience. Since you don’t know how the interviewer views push notifications, you should answer this question directly and honestly, based on the experience you’ve had developing other mobile applications. It would be best to emphasize that you try to maintain a delicate balance between useful and annoying push notifications. Your answer should also include how you and enable end-users to disable certain types of push notifications. Audio in mobile applications is becoming more prevalent due to advances in mobile devices’ audio technologies. Even if you have not used the audio in your applications, you should be prepared to speak about it and discuss how it enhances the user experience. Even though the interviewer did not ask for examples, you should feel free to provide them to illustrate your answer and make it clearer.

Apple and iOS devices continue to have a loyal customer base, helped in part by innovative new devices such as Apple TV and Apple Watch. You want to hire someone for your company who fits well with your team, and you don’t have much time to get to know that person. You need to know what to ask about and how to behave – you don’t want the other person to feel uncomfortable, as this could lead to judging someone wrong and missing out on a great developer. My Interview Practice offers a simulator that generates unique questions each time you practice, so you’ll never see what’s coming. There are questions for over 120 job titles, and each question is curated by actual industry professionals. You can take as many interviews as you need to, in order to build confidence.

Top 10 Mobile App Developer Interview Questions

Explore, practice, and do not forget to skim through our list of top iOS interview questions before your next interview. Android system gives a platform for a developer from which they can display the applications to smartphone users and find potential customers out of them. It also provides paid and free applications for the users that could secure their data serves as a platform for information and gives various services as per the needs of the customers. Android programs are compiled into a .dex file by DVM, which are then zipped into a .apk file on the device. Android is an open-sourced operating system that is used on mobile devices, such as mobiles and tablets. The Android application executes within its own process and its own instance of Dalvik Virtual Machine or Android RunTime. Top 5 Applications Engineer interview questions with detailed tips for both hiring managers and candidates.

• You can use this information when structuring your responses to other questions.
• And this question will gauge the applicant’s knowledge on these tools, which can make or break your success.
• TDD is a technique and a discipline where you write failing tests first before you write production code that makes them pass.
• Implement the interface, which involves extending the inner abstract Stub class as well as implanting its methods.
• You then drag it downwards to the lower part of the screen where a remove button appears.

There are other design patterns that can help you remedy this, such as MVVM, MVP, and Coordinator. And there are archictures such as VIPER and RIBs that were made specifically for the purpose of scaling iOS code and avoiding Massive View Controller problem. Typically developers think of iOS apps as the MVC code they write and the complex intricate details of the implementation, which is true.

Over 150 iOS interview questions

Localization (“l10n”), on the other hand, is the process of preparing the content of the app to be available in different languages. This includes translating most of the app’s resources, like texts, images, and sounds. Resources for different languages are usually kept in different files or directories, and the OS chooses the right one based on user settings. While creating the job ad, you already have a list of soft skills you’re looking for in an applicant. Thus, if the candidate meets your requirements, it’s a win for both of you.

how to become a mobile developer is a compiled form of a .java file that Android uses to produce an executable .apk file. An application that runs smoothly on one version of the Android OS might crash on another Android OS. Explain about java classes related to the use of sensors on Android. Both Google Play and the App Store require images, an app description, and a unique identifier.

Language/Role

You can determine this by researching the employer’s current applications or conversing with their current or former application developers. The alternative is to state your preference even if it is not the same as that of the employer. The first response will help the employer perceive that your preferences are the same as theirs.

• Emulators are a safe place for testing codes especially if it is in the early design phase.
• That means that when an iOS developer says that an image is 80 pt x 80 pt, the real size in pixels will be 80×80 on some very old devices (e.g., the iPhone 3G), 160×160 on the iPhone 6, and 240×240 on the iPhone X.
• What if the relationship doesn’t work out, or they go out of business, or they don’t have the capacity to work with you when you need it?
• App ID is used to identify one or more apps from a single development team.
• You’ll want to interview the product managers who were in charge of the app in the first place, and ask about how the developer managed the app development and worked with internal teams.

Thankfully, you don’t have to come up with the right questions on your own because we’ve already done that for you. We want you to ask the right questions in order to get the answers you’re looking for. This externalized state can be later restored without violating encapsulation and maintaining the privacy of data. IOS has specialized implementations of the pattern and uses it as a part of State Restoration. Reflection is used during the process and many additional objects are created.