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?

372

What is an iphone app?

463

What are the requirements for developing iphone apps?

433

What is push notification?

517

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

519

When to use nsmutablearray and when to use nsarray?

438

Describe the functionality of accelerometer of an iphone ?

466

What is cococa and cocoa touch?

532

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

431

What is latest mac os version?

510

What is meaning of 'synthesize' keyword ?

503

What is meaning of 'retain' keyword?

524

What is the meaning of 'weak' keyword?

499

What are the viewcontroller lifecycle in ios?

504

What is difference strong and weak reference ? Explain.

474

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Un-Answered Questions { Apple iOS }

How to convert MVC design pattern to MVVM design patterns

1052

What is uikit in ios?

463

Which class will be subclassed in iOS operating system?

455

What is shared instance in ios?

460

What is nspersistentstore? Is it thread safe?

511

What is the meaning of 'weak' keyword?

499

how you can delete a smart group created in Xcode?

456

Explain how to delete images in ios?

453

What is auto-layout?

523

Why do we override drawrect: method? How to explicitly call it?

383

What is difference between nsnotification and delegate?

419

What are most ios apps written in?

446

Explain layer objects?

481

Explain the difference between bounds and frame?

400

Is realm db free?

470

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