iOS feature that allows multiple applications to run and perform tasks at the same time From Wikipedia, the free encyclopedia
Multitasking is a feature available on iOS that allows multiple applications to run and perform tasks at the same time. It is available in iOS 4 or later. Multitasking features for iPad were added, including Spilt View and Picture in Picture, since iOS 9.
Multitasking was first released in June 2010 with the release of iOS 4.0.[1][2] Only iPhone 4, iPhone 3GS, and iPod Touch 3rd generation were able to use multitasking.[3] The iPad did not get multitasking until iOS 4.2 was released in November 2010.[4] Multitasking is currently supported on iPhone 3GS or newer, iPod Touch 3rd generation or newer, and all iPad models.[5]
Fast app switching lets apps to pause and resume themselves quickly and easily change to other apps.[6]An app that is on the screen is "running". An app that is not on screen but is still in memory is "suspended".[7] All apps that are built with iOS 4 SDK support fast app switching if running on iOS 4 and a compatible device.[8] Users can use fast app switching by opening the multitasking bar. The multitasking bar can be displayed by double-tapping the home button.[7][3]
Task completion lets apps continue a certain task after the app has been suspended.[9][10] Apps can ask for up to ten minutes to complete a task in the background in iOS 4.0 or later.[11]
Apps can run in the background by using background APIs. The following are available in iOS 4.0 or later:[12][13]
The following two APIs were added in iOS 5.0:[14]
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