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

Apple iOS Interview Questions

Questions Answers Views Company eMail

Which is the framework that is used to construct application’s user interface for ios?

810

What is the difference between atomic and nonatomic properties? Which is the default for synthesized properties?

818

When would you say that an app is not in a running state?

1043

Which is the default for synthesized properties?

932

What is cocoa and cocoa touch?

897

When is an app said to be in active state?

813

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

836

Differentiate between ‘assign’ and ‘retain’ keyword.

929

What is swift and what is objective-c?

853

What is the difference between atomic and nonatomic properties?

910

What is cocoa touch?

833

What are layer objects?

904

Explain the different types of ios application states.

859

Explain me what is polymorphism?

882

Do you know any other changes to ios 7 since wwdc?

842

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Un-Answered Questions { Apple iOS }

What is meaning of 'retain' keyword?

927

Explain what is iphone architecture?

872

Explain steps for using coredata?

991

Explain how an autorelease pool works at the runtime level in iOS

984

Name the app sate which it reaches briefly on its way to being suspended in iOS operating system?

911

Difference between release and autorelease ?

865

What’s the difference between not-running, inactive, active, background and suspended execution states?

823

What is id in ios?

861

How does the runtime handle message passing? What is message forwarding?

930

What is arc ? How it works?

1016

What is the purpose of using ibaction and iboutlet?

809

Does objective-c contain private methods?

847

What is Automatic Reference Counting (ARC) in iOS operating system?

865

Explain the difference between coredata & sqlite?

844

How to hide images in ios?

910

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