Mobile OS Interview Questions
Questions Answers Views Company eMail

If you run an application on device , which has location services.Which location it will show first ?

1 777

If you use location services in your app, will it drain your battery.if yes? How can we avoid?

389

Did you used CLRegion? How its working?

1 720




what is dispatchQueue?

1 841

Find the letter count in UItextfield? Including first character?

550

Tell about block and GCD

1 1032

Difference between retain and assign ?

1 931

How can we use NSOperation queue? what is the advantage of using it ?

1 777

How to fix tableviewcell dequeue issue ?

466

Difference between ScrollviewdidScroll and didendDecelerating delegates?

1 964

Major difference between delegate and notification?

1 883

Push notification working in ios?

1 746

A tableview with while tapping on cell show a popOver. and tapping on it move to another view controller, is it possible if yes? then how?

1 778

Bundle & document directory, sandbox ?

1 636

Difference b/w collectionView & uitableview?

809







Un-Answered Questions { Mobile OS }

How to fix tableviewcell dequeue issue ?

466


What is the correct way to check if a Compass sensor is present on the system? Explain your answer.

807


Explain @synchronized ,@dynamic

710


Difference b/w collectionView & uitableview?

809


When dealing with property declarations, what is the difference between atomic and non-atomic?

521






DB updation when app new version comes ?

333


Explain what is the stack of autorelease pools. How autorelease pool work under the hood?

454


Describe the SmsManager class in android.

463


What is the methods for unzip file in AFNetworking

860


How to get the geolocation data on a picture?

461


Difference between iOS 3 , iOS4, iOS 5, iOS 6, iOS 7 and iOS 8 (What are the new features)

593


How to convert MVC design pattern to MVVM design patterns

481


Explain in brief about the important file and folder when you create new android application.

644


What does Ubuntu mean?

465


How do we do compliance for Ubuntu?

407