Local notifications - application schedules local notifications to be delivered at a predetermined time.Background location - application is notified of location changes.Voice over IP - application is suspended when a phone call is not in progress.Background audio - application continues to run in the background as long as it is playing audio or video content.Starting with iOS 4, on 3rd-generation and newer iOS devices, multitasking is supported through seven background APIs: And if you touch a received notification, you go to the application that sent the notification.īefore iOS 4, multitasking was limited to a selection of the applications Apple included on the devices. Notifications now collate in a window which can be dragged down from the top of the screen. In the iOS 5 update, the notifications feature has been completely redesigned. A title for the folder is automatically selected by the type of applications inside, but the name can also be edited by the user. When applications are in "jiggle mode", any two can be dragged on top of each other to create a folder, and from then on, more apps can be added to the folder using the same procedure, up to 12 on iPhone and iPod touch and 20 on iPad. With iOS 4 and for iPod touch 4.2.1 came the introduction of a simple folder system. The rest of the screen is devoted to the current application. The screen has a status bar across the top to display data, such as time, battery level, and signal strength. The home screen appears whenever the user switches on the device or presses the "Home" button (a physical button on the device). The home screen (rendered by SpringBoard) displays application icons and a dock at the bottom of the screen where users can pin their most frequently used apps. To avoid any potential lawsuit, Apple licensed the "IOS" trademark from Cisco. The trademark "IOS" had been used by Cisco for over a decade for its operating system, IOS, used on its routers. In June 2010, Apple rebranded iPhone OS as "iOS". On January 27, 2010, Apple announced the iPad, featuring a larger screen than the iPhone and iPod touch, and designed for web browsing, media consumption, and reading iBooks. Apple also sold more than one million iPhones during the 2007 holiday season. Many people have also called the iPod touch "an iPhone without the phone". The previous September, Apple had released the iPod touch, which had most of the non-phone capabilities of the iPhone. On March 6, 2008, Apple released the first beta, along with a new name for the operating system: "iPhone OS". Steve Jobs argued that developers could build web applications that "would behave like native apps on the iPhone.On October 17, 2007, Apple announced that a Software Development Kit (SDK) was under development and that they planned to put it "in developers' hands in February". Initially, third-party applications were not supported. At first, Apple marketing literature did not specify a separate name for the operating system, stating simply that the "iPhone runs OS X". The operating system was unveiled with the iPhone at the Macworld Conference & Expo on January 9, 2007, and released in June of that year. iOS 8.1.3, uses under 50 megabytes of the device's storage, varying for each model. There are four abstraction layers: the Core OS layer, the Core Services layer, the Media layer, and the Cocoa Touch layer. IOS is derived from Mac OS X, with which it shares the foundation of Darwin core technology, and is, therefore, a Unix-like operating system by nature. Internal accelerometers are used by some applications to respond to shaking the device (one common result is the undo command) or rotating it in three dimensions (one common result is switching from portrait to landscape mode). Interaction with the OS includes gestures such as swipe, tap, pinch, and reverse pinch, all of which have specific definitions within the context of the iOS operating system and its multitouch interface. The response to user input is immediate and provides a fluid interface. Interface control elements consist of sliders, switches, and buttons. The user interface of iOS is based on the concept of direct manipulation, using multi-touch gestures.
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