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The system actually runs the services apps need in the background -- the apps don't need to do them individually, so it's not a "true" multitasking system, but it seems plenty effective. There are seven services: background audio, which allows you to use the standard pop-over iPod controls, Voice over IP, which can receive calls in the background, location services for GPS and social networking (there's an indicator if any service is tracking you), updated push notifications with local notifications, task completion so you can finish things like uploads in the background, and fast app switching, which lets apps sleep and resume instantly. Notably missing? Anything for managing a conversation, like IM or Twitter, which is a big omission. Win some, lose some, we suppose
We just asked Steve and co. about the lack of anything that can keep track of a timeline for something like a Twitter or IM app. Scott says that the new save states for applications will be much better than the current situation. Steve also said that they stand behind push notifications and still think it's the right choice for this platform.
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leica 发表于 2010-4-9 01:24 多任务确定之后,壁纸可换之后,确实,没啥好说的了。。。。。。。。。。。。。。。。。。。。
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