UIP纸板尺寸
自 iOS4+ 以来，这不再相关 - 所以请停止投票！或者至少解释一下你的反对票
我正在尝试为应用程序的精简版到完整版提供升级路径，该路径可以存储无限量的数据（我不想在应用程序内购买）。
我希望能够使用自定义 URL 进行升级，而不需要在线状态来缓存数据。
因此正在考虑使用 UIPasteboard 对象。
有谁知道或对存储到 UIPasteboard 的数据的最大可能大小进行过任何调查吗？我找不到关于此的苹果文档。
这会因设备而异吗？即RAM是否有限？
我尝试了 50MB 的文件，并且知道这会失败（即使在模拟器中），尽管 5MB 的文件没问题。在您使用 dataForPasteboardType 获取数据之前，无法知道它是否失败：
另外，是否有人做过 2 个应用程序自定义 URL 来执行应用程序间通信的一种请求/响应？我想我可以通过这种方式支持任意大小的数据......
this is no longer relevant since iOS4+ - so please stop downvoting! or at least explain your downvotes
I am trying to do an upgrade path for a lite to full version of an application, that can store an indefinite amount of data (I dont want to do in app purchase).
I would like to be able to upgrade using a custom url without needing an online presence to cache the data to.
So was thinking of using a UIPasteboard object.
Does anyone know, or done any investigations on the max possible size of data stored to a UIPasteboard? There seems to be no apple documentation, that i can find, regarding this.
Will this vary from device to device? i.e. is it RAM limited?
I tried a 50MB file and know this fails (even in simulator) though a 5 MB file is OK. There is no way of knowing if it has failed until you come to get the data with dataForPasteboardType:
Also, has anyone done 2 app custom URLs that will do a kind of request/response inter app comms? I was thinking that i could support arbitrary sized data this way...
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我会回答我自己的问题，经过一番调查后，它是8MB。设备独立。
我还设法支持使用 2 个自定义 URL 和应用程序之间递归的 openURL 方法来支持任意大量数据的升级。测试最大为 100MB - 它看起来不太漂亮，因为它打开每个应用程序 12 次！
I'll answer my own question, after doing some investigation, it's 8MB. Device independent.
I have also managed to support upgrade of arbitrarily large amounts of data using 2 custom URLs and the openURL method recursively between apps. Tested up to 100MB - it doesn't look too pretty because it opens each app 12 times!
我很惊讶有任何限制。我不明白为什么/怎么会有。您为 UIPasteboard 提供一个字典，其中保留了指向您的数据的指针。谁在乎它有多大？我怀疑如果您检测到限制，它实际上是对 NSString、NSData 或您提供给 UIPasteboard 的任何内容的大小的限制。
I'm surprised there's any limit. I don't see why/how there would be. You give UIPasteboard a dictionary with a retained pointer to your data. Who cares how big it is? I suspect if you are detecting a limit, it is really a limit on the size of an NSString, or NSData or whatever it is you're supplying to UIPasteboard.