How to start a selector on a background thread.
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When an app is said to be in active state?
. How do you change the content of your app in order to change the views displayed in the corresponding window?
Explain the difference between 'protocol' and 'delegate'?
What is mvc pattern in ios?
What is synchronized() block in objective c? What is the use of that?
What is ios image?
What is atomic and non atomic in ios?
What is plist?
Explain about design patterns in iOS
What is latest xcode version?
Explain concept of notification center, local and remote notifications.
What is xcode used for?