Hey friends I came up with the question today that I have a window where I am adding users selected folder in my app from NSOpenSavePanel. I was accessing all the files and folders properly but as soon as I quit my app I am not able to open those folder because when I am giving path to open those files or folders it is showing pop up You don't have permission to access this folder
I saved BookMark data to my app's preferences and now it is working fine.
The question was ; What exactly is happening ?
Looking forward to you.
The reason for this is the App Sandbox. The idea is that the user controls to what files an app has access.
For a one time access everything is handled for you. But if you want keep access across launches of your app you need to store and restore a bookmark.
You find all details about this in: Security-Scoped Bookmarks and Persistent Resource Access