Apple iOS Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Apple iOS Interview Questions

Questions Answers Views Company eMail

Are document objects required for an application? What does they offer?

1 2250

Which is the super class of all view controller objects?

1 5379

What is the purpose of UIWindow object?

1 2627

. How do you change the content of your app in order to change the views displayed in the corresponding window?

1 2280

Define view object.

1 2109

You wish to define your custom view. Which class will be subclassed?

1 2452

. Apart from incorporating views and controls, what else an app can incorporate?

1 2606

What are layer objects and what do they represent?

1 3000

Explain what is the stack of autorelease pools. How autorelease pool work under the hood?

1448

How to debug a crash in the auto-release pool?

1 2490

How will you implement sets and the intersection operation? Complexity?

1365

what is your preferred programming language? Why? How long will it take you to learn a new programming language?

1346

What happens when you invoke a method on a nil pointer?

2527

Explain your process for tracing and fixing a memory leak

2489

Explain how an autorelease pool works at the runtime level

2746

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Un-Answered Questions { Apple iOS }

When to use nsmutablearray and when to use nsarray?

814

Explain what is the stack of autorelease pools. How autorelease pool work under the hood?

1448

What is ios selector?

858

what is your preferred programming language? Why? How long will it take you to learn a new programming language?

1346

How we can do multithreading in ios?

910

What is delegate in ios objective c?

881

What is nspersistentstore? Is it thread safe?

995

Explain "private", "protected" and "public"?

846

What are the viewcontroller lifecycle in ios?

936

What is gcd in ios?

949

Define decoding or deserialization and encoding or serialization?

866

What language is ios based on?

886

is code completion is active by default in iphone development?

854

What’s the difference between an “app id” and a “bundle id” and what is each used for?

943

How to add an iphone os user to your team as a tester?

810

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