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Xcode 4 iOS Development by Steven F. Daniel

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iPhone OS4 SDK new features

The iOS4 SDK comes with over 1,500 APIs that contain some high quality enhancements and improvements which allow endless possibilities for developers to create some stunning applications. The table below provides an overview of these features:

FEATURE

DESCRIPTION

Multi-Tasking

This is perhaps the most awaited feature. It is an assortment of seven different services: Audio, VoIP, location, local and push notifications, task completions, and fast app switching that will make it possible and simple enough to use many applications at the same time. This will allow you to play the audio continuously, receive calls while your device is locked or other apps are being used. Location-based applications will continue to guide ...

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