Change a relative URL to absolute URL in Objective C?

Find the location of the running app by doing : NSString * applicationPath = NSBundle mainBundle bundlePath Which will return something like : Users/myUser/Library/Application Support/iPhone Simulator/User/Applications/317CF5C7-57B3-42CE-8DF4-4DD10B070D95/Assignment1a. App Then use (NSString *)stringByDeletingLastPathComponent to chop off the last bit.

Find the location of the running app by doing : NSString * applicationPath = NSBundle mainBundle bundlePath; Which will return something like : /Users/myUser/Library/Application Support/iPhone Simulator/User/Applications/317CF5C7-57B3-42CE-8DF4-4DD10B070D95/Assignment1a. App Then use - (NSString *)stringByDeletingLastPathComponent to chop off the last bit.

I'd use the NSURL methods that resolve URLs for me, like so: NSURL * bundle = NSBundle mainBundle bundleURL; NSURL * file = NSURL URLWithString:@"../Data/file. Txt" relativeToURL:bundle; NSURL * absoluteFile = file absoluteURL; The "../" is necessary, because otherwise it'd try to locate the file inside your app bundle. Putting the "../" beforehand will tell it to look in the bundle's containing folder, and not in the bundle itself.

Also, -NSBundle bundleURL is a 10.6+ API, but it's trivial to replicate the functionality using an NSURL convenience method and -NSBundle bundlePath.

You should just be able to concatenate the root folder of the app, with the relative path. You can get at the app home directory with NSHomeDirectory(), so to get the absolute path you can do something like the following: NSString *path = NSHomeDirectory() stringByAppendingString: @"/Data/file. Txt".

Not directly related to your answer, but NSHomeDirectory() actually gave me "/Users/MyUserName/" instead of (path to app). I, instead, used NSHomeDirectory() to automatically get the home directory, without the use of an NSTextField. – Guy Smith Jan 27 '10 at 2:48.

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