Question

It seems a bit strange that we have to use such a long way to get to a file’s path:

NSURL *soundURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] 
                                            pathForResource:@"0" ofType:@"aiff"]];

I wonder is there a faster way, such as a class method for NSURL or NSBundle?

NSURL *soundURL = [NSURL urlFromMainBundle:@"0.aiff"];

or

NSURL *soundURL = [NSBundle urlFromMainBundle:@"0.aiff"];

If not, is there a reason why it is not a good form?

Answer 1

How about:

NSURL *url = [[NSBundle mainBundle] URLForResource:@"0" withExtension:@"aiff"];

Starting from there, you could also write a category for NSURL or NSBundle:

@interface NSURL (NSURL+Resource)
+ (NSURL *)URLForResource:(NSString *)resource;
@end

@implementation NSURL (NSURL+Resource)

+ (NSURL *)URLForResource:(NSString *)resource
{
   NSString *name = [resource stringByDeletingPathExtension];
   NSString *extension = [resource pathExtension];

   return [[NSBundle mainBundle] URLForResource:name withExtension:extension];
}

@end