缓存怎么就指定到了《dataPath》里面了？没见到《dataPath》使用的地方啊。
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Last Revision:
Version 1.1, 2010-06-25
Fixed several minor bugs. Upgraded project to build with iOS 4.0 SDK.
(Full Revision History)
Build Requirements:
iOS 4.0 SDK
Runtime Requirements:
iOS 3.2URLCache is a sample iPhone application that demonstrates how to download a resource off the web, store it in the application's data directory, and use the local copy of the resource. URLCache also demonstrates how to implement a couple of caching policies:- The local copy of a web resource should remain valid for a period of time (for example, one day) during which the web is not re-checked.- The HTTP header's Last-Modified date should be used to determine the last time a web resource changed before re-downloading it.The audience for this sample is iPhone developers using resources such as images that are retrieved or updated from the web.
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