NSBundle is very useful, and includes an excellent method that returns the path to a file:
- (NSString *)pathForResource:(NSString *)name ofType:(NSString *)extension;
This method, however, requires two strings, which didn’t work for my app. So I wrote the extension. I realize you could use:
[bundle pathForResource:[string stringByDeletingPathExtension] ofType:[string pathExtension]];
but mine is easier:
[bundle pathForResource:string];