ios - iOS 中的文件是否有共享内存池？

Question

iOS 中是否有共享内存池或共享目录供应用程序读写文件？

Answer 1

不，每个应用程序都是沙盒化的。应用程序只能在自己的沙箱中读写文件/数据。

来自File System Programming Guide: File System Basics :

Every Application Is an Island - An iOS application’s interactions with the file system are limited mostly to the directories inside the application’s sandbox. During installation of a new application, the installer code creates a home directory for the application, places the application in that directory, and creates several other key directories. These directories constitute the application’s primary view of the file system. Figure 1-1 shows a representation of the sandbox for an application.

如果您需要在您的应用程序中打开特定类型的文件，您可以向系统注册您的应用程序，让它知道您支持的文件类型。文件通过 API 而不是全局共享目录与您的应用程序共享。看看 Document Interaction Controllers有关如何执行此操作的更多信息。