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iOS Developer Interview Questions

When would you use CGAffineTransform?

Suggested approach: There are lots of ways of using these to manipulate the frame of a view, but an easy one is animation – you might make a view scale upwards, rotate, or grow larger over time for example.

For bonus points, you might want to move on to discuss that affine scale transforms don't cause views to redraw at their larger size, which means that text is likely to appear fuzzy.

  Estimated difficulty: Easy

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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