在iOS应用程序中，主包和文档目录之间有什么区别？ [英] In iOS apps , what's the difference between the main bundle and the documents directory?

问题描述

有人可以向我解释一下吗？

Can someone please explain it to me?

我想知道他们之间的区别如下：

I want to know the difference between them regarding things like:

• 从设备获取的空间量（应用程序处于活动状态或终止状态）。


• 内存使用情况。


• 读取和写入数据的能力（在用户端）。


• 当应用程序处于以下状态时，什么停留以及删除（或更改）的内容：已更新为Appstore /已删除。

• The amount of space taken from the device (wether the the app is active or terminated).
• Memory usage.
• The ability to read and write data (on the user's end).
• What stays and what gets removed (or changed) when the app is: Updated form the Appstore/ Deleted.

以及您可能需要的任何其他详细信息。

And any other details you may find necessary.

推荐答案

mainBundle是已安装的应用程序

• 它是提取的ipa的大小（你可以在xcode事先）


• 它是ReadOnly并且不包含用户文件（例如文档）


• 已删除您的应用程序（它是应用程序）


• 从App Store更新时，较旧的ioses会替换整个捆绑包，将其作为一个整体下载。较新的6+ IIRC，做增量更新，只下载更改的文件。你不能说下载了多少 - 至少是你改变的字节数。



the mainBundle is the installed app

• it is the size of the extracted ipa (you can see that in xcode beforehand)
• it is ReadOnly and won't contain user files (e.g. documents)
• deleted with your app (it is the app)
• when updating from the App Store, older ioses replace the whole bundle, downloading it as a whole. newer oses 6+ IIRC, do delta updates, only downloading changed files. you can't say how much is downloaded -- at least the amount of bytes you changed.


• 其大小取决于您的用户/您的应用创建的文档;）以0 mb开头


• 使用您的应用程序删除了ReadWrite




• 保持不受更新影响


• Its size depends on what your user/your app creates as documents ;) it starts with 0 mb
• It is ReadWrite
• deleted with your app
• remains untouched by updates

回答问题1和3和4

问题2是错误的..文件系统文件夹不消耗内存，除非文件由app / os加载

question 2 is wrong .. a filesystem folder doesn't consume memory unless files are loaded by the app/the os



• os显然加载了必要的您应用的部分内容和所需的框架


• 您的应用可以加载文档。



内存使用情况只是模糊/与文件大小无关

memory usage is only vaguely / not really related to file size

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