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Mobile OS Interview Questions
Questions Answers Views Company eMail

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

 481

What is a category and when is it used?

 502

What are “strong” and “weak” references? Why are they important and how can they be used to help control memory management and avoid memory leaks?

 429

What are the limits of accessibility ?

 470

Explain the characteristics of ios?

 456

Explain place holder constraint

 432

Explain differences between foundation and corefoundation

 479

What is auto-layout?

 523

What is the difference between let and var in swift?

 484

What is the difference between atomic and non-atomic properties? Which is the default for synthesized properties? When would you use one over the other?

 419

Explain the difference between copy and retain?

 551

What is the difference between synchronous & asynchronous task ?

 435

Why do you generally create a weak reference when using self in a block?

 476

what’s accessibilityhint?

 473

What is made up of nserror object?

 461

Un-Answered Questions { Mobile OS }

Which types of flags are used to run an application on android?

506

What is the database used for android platform?

503

is code completion is active by default in iphone development?

412

What is a weak var?

473

What is the difference between android and android go?

470




Can you please explain the difference between nsarray and nsmutablearray?

404

What is a serial queue?

451

what is the difference between bounds and frame?

460

What is the best android phone?

460

Why android is most popular operating system in the world?

469

What is strong and weak in ios?

411

Is uikit thread safe?

471

What are the names of the specific logcats?

516

What is android on cell phones?

480

In a single model, can I have few entities in one sqlite db file and remaining in another sqlite db file?

418

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