iOS Developer Interview Questions
What are the pros and cons of using viewWithTag()?
Suggested approach: The only real pro is that it’s an easy fix to finding a view, used particularly when you don’t want to bother creating a custom table view cell class. However, it’s obviously flaky because the tag number might change in the future, and it’s never nice having magic numbers in your code. Use with care!
Estimated difficulty: Easy
See the full list of iOS interview questions
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
- How does a view's intrinsic content size aid in Auto Layout?
- What is the purpose of reuse identifiers for table view cells?
- What is the difference between aspect fill and aspect fit when displaying an image?
- What are the benefits of using child view controllers?
- Which parts of UIKit are you least familiar with?
