iPhone 3.0 to include peer-to-peer support, push notification (photos)In offering a preview look at the new iPhone OS 3.0 platform, senior vice president of iPhone software Scott Forstall announced that Apple has added over a thousand new Application Programming Interfaces to allow developers greater access to the mobile device's features, from peer to peer discovery to peripheral hardware support to background notifications.
Among the changes are support for new business models for selling mobile software, including subscription sales to pay for continued access to software services, and the ability to sell add-on packages of new content, game levels, or similar expansions.
The new iPhone 3.0 software will also add Bonjour discovery support, allowing iPhone users to discover nearby devices without requiring them to set up an ad hoc Wi-Fi network. Instead, the device will use Bluetooth to discover other phones advertising their presence, a feature that can be used in multiplayer games and other applications.
The feature is automatic and doesn't even require the presence of Wi-Fi; developers just need to call on the feature and build in a menu to show it off.
The next major update will also finally give developers access to hardware peripherals using the Dock Connector, with Forstall giving examples that included smart stereo docking devices, an FM transmitter controlled by an app, or even medical devices, referencing a slide of an iPhone connected to a blood pressure cuff.
Developers can not only hook these into existing APIs and formats but write their own custom protocols to ensure a device works correctly.
Apple will be converting the mapping engine behind its own Maps app into a general purpose API that developers can use to add mapping features to their own apps as well, including the same multitouch navigation control, street and satellite displays, and GPS plotting.
Core Location will also finally make turn-by-turn GPS directions possible, although developers will need to sell maps separately as Google's free maps are not licensed for GPS mapping. Many developers reportedly either have licenses to third-party maps or own the maps themselves, making this limitation a relatively small problem.
At last year's WWDC, Apple announced plans to roll out its Push Notification Server for the iPhone last September. The system never appeared, however, and triggered concerns that the company was either scrapping it or replacing it with true background app support.
The feature lets apps quit but continue to "listen" for data on a universal network channel that can send messages and other notifications, freeing up system resources but still permitting instant messaging and similar apps to keep watch.
After noting that ESPN delivers 50 million alerts every month, Forstall said Apple had ultimately been forced to redesign its background notification system to accommodate much greater traffic than it had originally anticipated. It now "scales," according to the Apple executive, and can be bolstered by additional servers or other resources as the amount of traffic increases.
He also said Apple had tested background apps on rival mobile operating systems from RIM and Microsoft and found background standby time dropped by 80 percent or more with background listening enabled.
Forstall noted that, in contrast, Apple's solution will only see standby time reduced by 23 percent. PNS will allow developers to push number updates that show an icon badge, text messages, and alert sounds to users who request background updates. Apple is customizing its PNS network for all 80 countries where the iPhone is available, making sure it's optimized across all of the applicable mobile networks.
Apple is also adding a new API for streaming audio and video directly over HTTP, which is more secure and reliable for firewalls, and another for voice-over-IP. This will allow in-game voice chat and other features that aren't an option today. Other new APIs to be released in iPhone 3.0 will allow access to the iPod portion of the iPhone's media library, control of the proximity sensor, audio recording features through a Voice Memos feature, a battery API, support for data detectors, and text selection.
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