如何从其他iOS应用程序读取应用程序文档目录中的文档？

Question

I have an app in which i am downloading pdf files from server and store them locally in document directory. Now, i want to read that files outside my app , means i want to read that files using other pdf reader applications,

How can I Read those files using other apps?

I came across same question Here , it has good answer but it is too old. at that time it was not possible so is that possible right now?

Is it possible to save those files in iBooks?

I want to make one thing clear

"I don't want to open the app supporting pdf files, i just want to open pdf files stored within my app with other app. like we can access Photos app & get images from device like that i want to open pdf files stored within my app"

Answer 1

You can open file URLs with UIApplication's openURL: method. Because of sandboxing, other apps could not access any files within your application's Documents folder.

You need to use UIDocumentInteractionController to open documents that you download or create in other applications.