Explain about Viewcontroller lifecycle.
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Explain shallow copying and depth copying.
Who calls the main function of you app during the app launch cycle in iOS operating system?
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When is an app said to be in active state?
What is ios selector?
Outline the class hierarchy for a UIButton until NSObject.
Push notification working in ios?
What are the features of iphone 3gs?
How many bytes we can send to apple push notification server?
Whats the difference between frame and bounds?
What is the meaning of 'weak' keyword?
Explain @property ,@synthesize
What are blocks in ios?