Question

In OS4 the idea is sold to client is that the app is opened in background, and even if the user is on another app, the app can push data to server on regular basis (which would trigger push notifications btw) BUT on what i read on the internet is that IOS4 multitasking is a fake one : - it freezes the app, and doesn t leave it in background - the developper has to specify the app must work in IOS4 (iOS4 qualification process) to ensure that returning on the app won t start agin from beginning

因此,任何人都能够证实,在电话4上的SOS4能够将数据推向背景过程的服务器?

Answer 1

申请可以两种方式接收和答复背景地点事件:

Applications can register for significant location changes only (your app runs in the background when a significant change in location occurs).
An application can declare itself as a continuous background location application (full-time background processing in response to all location events).

http://developer.apple.com/iphone/library/releasenotes/ General/Whats NewIniPhoneOS/Articles/iPhoneOS4.html“rel=” 。

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