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 2154

Which is the super class of all view controller objects?

1 5290

What is the purpose of UIWindow object?

1 2548

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

1 2213

Define view object.

1 2017

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

1 2384

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

1 2532

What are layer objects and what do they represent?

1 2921

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

1403

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

1 2405

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

1331

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

1292

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

2477

Explain your process for tracing and fixing a memory leak

2440

Explain how an autorelease pool works at the runtime level

2703

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Un-Answered Questions { Apple iOS }

Explain the working of manual memory management?

918

is code completion is active by default in iphone development?

799

What is the ? In swift?

863

What persistent storage core data uses to save data?

790

What is the difference between atomic and non-atomic properties? Which is the default for synthesized properties? When would you use one over the other?

757

What is the difference between viewdidload and viewwillappear?

825

What is the difference between copies & retain in iOS operating system?

858

What is an ios framework?

824

Define encoding or serialization??

863

Explain parent-child context setup?

770

What are all the difference between categories and subclasses in iOS operating system?

761

How to parse xml? Explain

856

Which are the app’s state transitions when it is launched?

780

What is ipad screen size?

854

Tell me what is iphone os?

798

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