Using NSOutlineView as a file browser, starting from a given directory

Question

I've been following this tutorial for using NSOutlineView as a hierarchical file browser:

https://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/OutlineView/Articles/UsingOutlineDataSource.html

I used all the code in the tutorial and it worked. However, I then tried to call initWithPath: with a path other than / and it doesn't work: the fullPath of the top item (i.e. the folder specified in initWithPath) is just the name of the folder, and the children method of the FileSystemItem returns an empty array, I assume because the file manager is looking in /FolderName/ rather than the absolute path, which never appears to be saved.

How could I modify this code to allow it to do this?

Answer 1

The code above almost works. As soon as you try to open a folder it crashes. Try it with this modification. It works perfectly for me:

- (id)initWithPath:(NSString *)path parent:(FileSystemItem *)parentItem {
  if (self = [super init]) {
    relativePath = [path copy];
    parent = parentItem;
  }
 return self;
}