How to send files to another app on ios

Question

Dropbox application permit to send files to other applications like teamviewer or iBook. How do they do that?

I thought the only way to send data to another application was the url scheme.

Answer 1

I think Dropbox using Document Interaction API to provide this functionality.

Quotes from docs:

You can use a document interaction controller to display a file preview or to prompt the user to choose an action for a file.

• To modally display a file preview, call the presentPreviewAnimated: method.
• To prompt the user with a set of options, including an option to open the file in another app, call the presentOptionsMenuFromRect:inView:animated: or presentOptionsMenuFromBarButtonItem:animated: method.
• To prompt the user only to open the file in another app, call the presentOpenInMenuFromRect:inView:animated: or presentOpenInMenuFromBarButtonItem:animated: method.