it seems we should add and use this entitlement:
com.apple.security.files.bookmarks.app-scope
SAVE THE URL:
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSError *error = nil;
NSData *bookmarkData = [[myPanel URL] bookmarkDataWithOptions:NSURLBookmarkCreationWithSecurityScope includingResourceValuesForKeys:nil relativeToURL:nil error:&error];
if (!error)
{
[defaults setObject:bookmarkData forKey:@"iData"];
[defaults synchronize];
}
READ BACK:
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
bookmarkFileURL = nil;
NSData *bookmarkData = [defaults objectForKey:@"iData"];
if (bookmarkData != nil)
{
NSError *error=nil;
bookmarkFileURL = [NSURL URLByResolvingBookmarkData:bookmarkData options:NSURLBookmarkResolutionWithSecurityScope relativeToURL:nil bookmarkDataIsStale:nil error:&error];
if (error != nil) bookmarkFileURL = nil;
}
if (bookmarkFileURL)
{
[bookmarkFileURL startAccessingSecurityScopedResource];
}
//
//
[bookmarkFileURL stopAccessingSecurityScopedResource];