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 is advantage of categories? What is difference between implementing a category and inheritance?

696

What is an iphone app?

806

What are the requirements for developing iphone apps?

760

What is push notification?

877

Assume that your app is running in the foreground but is currently not receiving events. In which sate it would be in?

839

When to use nsmutablearray and when to use nsarray?

733

Describe the functionality of accelerometer of an iphone ?

784

What is cococa and cocoa touch?

876

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

745

What is latest mac os version?

851

What is meaning of 'synthesize' keyword ?

819

What is meaning of 'retain' keyword?

840

What is the meaning of 'weak' keyword?

789

What are the viewcontroller lifecycle in ios?

859

What is difference strong and weak reference ? Explain.

796

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Un-Answered Questions { Apple iOS }

Explain interfaces?

827

What is closures in ios?

735

Explain difference between release and autorelease?

788

Explain the difference between strong and retain.

726

What is dependency injection in ios?

861

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

843

Explain formal protocols?

757

What is ios realm?

845

Explain app's state transitions when it gets launched?

697

What are the features is ios 12.1?

808

What is variable in ios?

767

Explain your process for tracing and fixing a memory leak iOs?

829

What is dynamic in iOS operating system?

935

What size is 1x and 2x?

703

What do you mean by rest?

759

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