How to open a folder or a file with the help of file path in OS x programatically?

Question

I have selected a file using NSOpenPanel and save its url path, but at any time in my os x Application i want to open this file in the default mac application.Suppose if I select an file and click on the open button in my app the file should open in default preview. How could i achieve this?

Answer 1

I think you want:

[[NSWorkspace sharedWorkspace] openURL:url];