Auto layouts introduced in iOS6 with which we can support different screen resolution. Also it makes it easier with internationalization we don't need different xib or storyboard for every language.
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provides a mechanism for broadcasting information within a program, using notification we can send message to other object by adding obser...
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Abstract Factory Pattern Its a creational design pattern. It's extension to factory method. It creates more level of abstraction t... -
An IPA has a built-in structure for iTunes and AppStore to recognize, The example below shows the structure of an IPA, /Payload/ /Pay...
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reference:- http://www.techotopia.com/ iOS Architecture Application runs above the Cocoa Touch layer. Application can call an... -
Prototype Pattern Its a creational design pattern. Its normally used to create duplicate objects. This pattern is used normally when th... -
Watchkit is extension to you iOS app. To add watchkit to app follow below steps(1.File new target watchkit app which will add wathkitap...
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Objective C 2.0 introduces garbage collection to take care of memory. Reference Counting/Retain counting:- Every object has an integ...
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Singleton Design Pattern Its creational design pattern. Singleton pattern is to ensure that a class has only one instance and provides ... -
NSAutoreleasePool:- The NSAutoreleasePool class is used to support Cocoa’s reference-counted memory management system. An autor...
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layoutSubviews is a method that is called automatically during view size changes. It can be used by a custom view to perform addit...
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