Mobile OS Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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 2387

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

1350

Did you used CLRegion? How its working?

1 2296

what is dispatchQueue?

1 2501

Find the letter count in UItextfield? Including first character?

1564

Tell about block and GCD

1 2766

Difference between retain and assign ?

1 2871

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

1 3081

How to fix tableviewcell dequeue issue ?

1481

Difference between ScrollviewdidScroll and didendDecelerating delegates?

1 3038

Major difference between delegate and notification?

1 2388

Push notification working in ios?

1 2267

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 2328

Bundle & document directory, sandbox ?

1 2212

Difference b/w collectionView & uitableview?

2355

Un-Answered Questions { Mobile OS }

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?

819

What is bridging header in swift?

844

Explain app bundle?

937

What is the benefit of using guard statement in swift?

887

What is nsoperation and nsoperationqueue?

845

Why do we use synchronized ?

866

What is android os used for?

941

What are the names of the specific logcats?

968

What is the role of orientation?

978

What are the control transfer statements used in swift?

858

What is difference between activity & service?

964

What are the dialog boxes that are supported in android? Explain.

973

Does ios supports multi-tasking functionality?

965

how to update ui from a service?

1087

What is the core work of intent filter?

977

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