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iOS Developer Interview Questions

What class would you use to play a custom sound in your app?

Suggested approach: An easy answer is AVAudioPlayer, as long as you're clear about keeping the object alive while its sound plays. If you were feeling more confident you could discuss the pros and cons of using AudioServicesCreateSystemSoundID() instead – it's a slightly odd API, but it definitely works.

  Estimated difficulty: Intermediate

Important notes

  • There are over 150 interview questions in the system. Once you've read the question and come up with a suitable answer, try reading my suggested approach and see if it helps you add more detail.
  • These questions are not designed to be hard; a good interviewer is more interested in generating discussion that lets your ability and interests shine through.
  • If you answer a question with "yes" or "no" you've missed the point – interviewers prefer you to provide reasoning, explanation, or detail, so try to elaborate with examples!
  • If you're looking for detailed technical questions about the language, you should try my Swift tests instead – there are multiple challenges that will work your brain hard.
  • For a whole series of coding challenges, I wrote the perfect book for you: Swift Coding Challenges.

Related questions

See the full list of iOS interview questions

 
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