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Apple iOS Interview Questions
Questions Answers Views Company eMail

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

 378

What is an iphone app?

 472

What are the requirements for developing iphone apps?

 443

What is push notification?

 526

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

 529

When to use nsmutablearray and when to use nsarray?

 448

Describe the functionality of accelerometer of an iphone ?

 476

What is cococa and cocoa touch?

 540

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

 443

What is latest mac os version?

 518

What is meaning of 'synthesize' keyword ?

 514

What is meaning of 'retain' keyword?

 530

What is the meaning of 'weak' keyword?

 510

What are the viewcontroller lifecycle in ios?

 516

What is difference strong and weak reference ? Explain.

 481

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Un-Answered Questions { Apple iOS }

What is iphone os?

493

What is a background thread?

514

Explain the application lifecycle in ios?

440

How to switch off predictive text?

467

What is swift and what is objective-c?

468




What is cocoa touch?

436

Explain difference between sax parser and dom parser?

418

What is ios selector?

422

How can mobile application errors be prevented?

447

DB updation when app new version comes ?

896

What is a serial queue?

457

What is plist file and explain about it is usage in iOS operating system?

476

What is arc in ios?

439

Is appdelegate a singleton?

485

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

378

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