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

Apple iOS Interview Questions

Questions Answers Views Company eMail

What are the tools required to develop iOS applications?

B-Ways TecnoSoft,

1 2444

. Name the framework that is used to construct application’s user interface for iOS.

1 2229

Which API is used to write test scripts that help in exercising the application's user interface elements?

1 3294

. Why an app on iOS device behaves differently when running in foreground than in background?

1 2735

How can an operating system improve battery life while running an app?

1 2851

Which framework delivers event to custom object when app is in foreground?

1 2992

. When an app is said to be in not running state?

1 3188

. Name the app sate which it reaches briefly on its way to being suspended

1 2375

An app is loaded into memory but is not executing any code. In which state will be in?

1 2106

Assume that system is running low on memory. What can system do for suspended apps?

1 2471

How can you respond to state transitions on your app?

1 2613

. List down app's state transitions when it gets launched.

1 2222

What is the use of controller object UIApplication?

1 3118

How is the app delegate is declared by Xcode project templates?

1 3134

Which app specific objects store the app's content?

1 3425

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Un-Answered Questions { Apple iOS }

What is singleton class in ios?

756

What is synchronous web request and asynchronous ?

862

What are the requirements for developing iphone apps?

800

Differentiate between ‘assign’ and ‘retain’ keyword.

883

What is a thread in ios?

719

Garbage collector in iphone?

890

Will iphone 6s get ios 14?

758

Is ios written in c?

803

Explain xctest test case code.

808

Tell me what is iphone os?

802

Explain the difference between viewdidload and viewdidappear?

834

Explain arc?

859

What is a retain cycle?

761

What size is 1x and 2x?

739

What is the 'interface' and 'implementation'?

843

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