Why uicontrol is provided if we can create custom uiview?
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Explain ios multitasking?
What is nsuserdefaults?
Assume that an app is not in foreground but is still executing code. In which state will it be in?
What kind of database is realm?
What are the delegate methods of mkmapview?
Explain the difference between viewdidload and viewdidappear?
What is plist?
Difference between categories and extensions?
What is completion handler in ios?
Explain differentiate between release and pool drain?
Which object is create by uiapplicationmain function at app launch time?
What is an NSOperationQueue and how/would you use it in iOS operating system?