iPhone interview questions

1) What is Xcode and iPhone SDK?
2) What is the difference between retain and release?
3) Difference between retain and copy ?
4) Difference between delegate and datasource?
5) Any five delegate and datasource method of UITableView with their explanation ?
6) Explain delegation, categories, and subclassing. What are their pros/cons? Can you give examples where you would use one over the other?
7) Difference between sax parser and dom parser ?
8) What is atomic and non atomic ?
9) XML parsing procedure (NSXMLParser).
10) What is @synthesize?
11) Explain deep copy and shallow copy ?
12) Difference between pass by value and pass by reference ?
13) Write a simple prog to add data using SQLITE?
14) Write a simple prog to parse an xml file (xml file structure will be provided by the company)
15) What is a class difference between a class and a structure ?
16) Difference between table view and picker view?
17) Write a program, if u have two classes A and B. A contain some class and instance method and you have to invoke this method in B. Do it without using inheritance?
18) Difference between UIView and UIViewController ?
19) Steps to deploy an app into the device ?
20) Difference between protocol and delegate ?
21) Difference between C++ and Objective C ? (link to my another blog on iPhone)
22) Explain stack and heap?
23) Why dynamic memory allocation is required?
24) Explain the types of Notification in iPhone ? and how to use them ?
25) Few Questions on your iPhone Project (if any)
26) Given an object of an unknown type, how would you determine its class? How would you check to see if it conforms to a given protocol? How would you check to see if it responds to a given message/selector?
27) Difference between frames and bounds ?
28) what is the difference between a synchronous and an asynchronous request ?
29) How to display different image from the server inside the table view ?
30) Difference between release and autorelease ?

Few other links to iPhone interview questions


1) http://www.moszi.net/dev/?p=17
2) http://www.applausible.com/blog/?p=654
3) http://www.techipost.com/2011/08/11/iphone-interview-questions/
4) http://anujbansal1810.blogspot.com/2011/08/c-is-sea.html
5) http://yoursiphone.blogspot.com/2010/08/interview-questions-part-2.html
6) http://placementpapers.net/helpingroot/Oops/Important-Interview-Questions-On-Object-Oriented-Programming-Concepts


I hope the above interview questions for iPhone help you to crack the interview and if they do then please let me know via comments or via mails, until then happy iCoding and have a great Day. 

Comments

  1. Sunil BhosaleSeptember 20, 2011 at 2:42 AM

    These questions really helped me to crack interview :)

    ReplyDelete
    Replies
    1. AnonymousFebruary 20, 2012 at 9:19 AM

      I HOPE IF U CAN SHOW THE ANSWER LIST OF THESE QUESTIONS

      Delete
  2. Sanjit Kumar MishraNovember 15, 2011 at 12:36 AM

    Very Use full Information
    Hope you too like the below link of my blog..
    http://theworldrotation.blogspot.com/2011/10/tips-of-steve-jobs-on-education-india.html

    ReplyDelete
  3. Archana ChaurasiaDecember 6, 2011 at 3:18 AM

    Hi, It will be more useful if you will post answers with question.

    ReplyDelete
  4. AnonymousDecember 13, 2011 at 10:17 PM

    hello sir,

    do you have any idea of implementation of effects on video recording on iphone.
    see this link:
    http://itunes.apple.com/us/app/id390530940?mt=8

    if u have any code related to this please help me
    my email id:
    mahendrachouhan1@gmail.com

    thanks.

    ReplyDelete
  5. JituDecember 29, 2011 at 5:40 AM

    Hi sir,
    plz help me about , match the pair how can use the 1-a,2-d .... in objective c

    ReplyDelete
  6. UnknownJanuary 8, 2012 at 10:48 PM

    I want answers above all

    ReplyDelete
  7. RanjaniJuly 17, 2012 at 9:30 AM

    iphone questions and answers i suggest this is the best link http://www.iphoneinterviewquestions.info/ and Ranga reddy you have the answer also on same site http://www.iphoneinterviewquestions.info/

    ReplyDelete
  8. krishSeptember 6, 2012 at 9:10 PM

    Great. This will be helpful for the iOS dude's to get the jobs. I hope the list have some more iOS interview Questions.

    ReplyDelete
  9. venkatSeptember 13, 2012 at 5:18 AM

    Very Useful tutorial.
    I too created some ios topics here:

    http://iosfordummies.blogspot.in/

    ReplyDelete
  10. AnonymousJune 13, 2013 at 3:39 AM

    Thanks for your tuts. You covered Very imp. topics for iOS developers.

    By,
    Gajendrasinh Chauhan

    ReplyDelete
  11. WillimJuly 19, 2021 at 3:00 AM

    Nice! Also, know about ubereats clone app.

    ReplyDelete

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