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What is the use of viewDidUnload and didReceiveMemoryWarning methods?
When they actually get called?
what are the difference between dealloc, viewDidUnload and didrecievedmemorywarning?
viewDidUnload: It is called when viewcontroller recieves the low memory warning.
dealloc: It is called when the object/viewController is released.
didRecieveMemorywarning: Also called when the controller recieves the low memory warning.
So Whats the difference between viewDidUnload and didrecieveemoryWarning?
viewDidUnload is the place where you need to clean up the UI related things i.e., outlets.
didRecieveMemoryWarning is a place where you need to clean up the other objects which are holding memory and not used frequently.