iPad open file with external program

Help me pleas. I need to find some way to open files with external application on iPad.

More开发者_StackOverflow社区 detail: I run my program and have a file that I have to open with external application. I need to get a list of programs installed on iPad, chose one of them and then open file with in.

Is this possible?

Thanks a lot!

There is an example application available from Apple that shows you how to preview documents. To achieve what you want you will have to look at the UIDocumentInteractionController, it's probably best if you start reading this overview article.