Multitasking (iOS): Difference between revisions

Revision as of 23:23, 23 November 2013

Revision as of 01:53, 18 January 2014

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Before iOS 4, multitasking was limited to a selection of the applications Apple included on the device. Users could, however "jailbreak" their device in order to unofficially multitask.<ref>{{cite web|last=Ritchie |first=Rene |url=http://www.imore.com/ios-4-walkthrough |title=iOS 4 walkthrough |publisher=iMore |date=2010-06-14 |accessdate=2013-09-14}}</ref> Starting with iOS 4, on third-generation and newer iOS devices, multitasking is supported through seven background APIs:<ref>{{cite web|last=Ritchie |first=Rene |url=http://www.imore.com/apple-announces-multitasking-iphone-40 |title=Apple announces multitasking for iPhone OS 4 (iPhone 3GS/iPod touch G3 only) |publisher=iMore |date=2010-04-08 |accessdate=2013-09-14}}</ref>

# Background audio – application continues to run in the background as long as it is playing audio or video content<ref>{{cite web|url=https://developer.apple.com/library/ios/documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/ManagingYourApplicationsFlow/ManagingYourApplicationsFlow.html#//apple_ref/doc/uid/TP40007072-CH4-SW20 |title=iOS App Programming Guide: App States and Multitasking |publisher=Apple Developer |accessdate=2013-09-14}}</ref>

# Voice over IP – application is suspended when a phone call is not in progressprogress<ref name="AppleDev1" />

# Background ___location – application is notified of ___location changes<ref name="AppleDev1" />

# [[Apple Push Notification Service|Push notifications]]