什么是iOS中的沙盒？我可以在一个应用程序之间传输数据吗？

有没有什么比沙盒化iPhone应用程序,使用沙箱有什么好处,他们允许我在一个应用程序和另一个应用程序之间共享数据？

我在搜索时发现了这个链接,但由于我不熟悉iOS开发,因此无法理解.

http://www.iphonedevsdk.com/forum/iphone-sdk-development/56207-what-is-sandbox-in-iphone.html

从 The iOS Environment起

For security reasons, iOS places each app (including its preferences
and data) in a sandbox at install time. A sandbox is a set of
fine-grained controls that limit the app’s access to files,
preferences, network resources, hardware, and so on. As part of the
sandboxing process, the system installs each app in its own sandbox
directory, which acts as the home for the app and its data.

一个解决方案将数据从一个应用程序传输到另一个应用程