Bundle subdirectory access

Question

I'm try to implement ability to change interface in my program, something like themes. I'm decide to use bundles, so in my case they looks like this:

• Theme1.bundle
• Theme2.bundle

Every bundle have folders:

• Theme1.bundle
  • graphic
    • pic1.png
    • pic2.png
  • sound
    • sound1.wav
    • sound2.wav

So I can get path to any required picture from bundle with this code:

path = [NSString stringWithFormat:@"%@.bundle/graphic/%@", selectedBundle, imageName];

When I get pictures from bundle there is no problem, path looks like this (I check it using breakpoints): Theme1.bundle/graphic/pic1.png and I create UIImage

image = [UIImage imageNamed:path];

Pictures loaded without any problem.
But when I trying to play sound using AVAudioPlayer , I get path to sound by same way and path looks like this: Theme1.bundle/sound/sound1.wav , but when I try to create NSData

sound = [NSData dataWithContentsOfFile:path];

it is not initialized.
When I try to keep sounds in main bundle and get it with

path = [[NSBundle mainBundle] pathForResource:@"sound1" ofType:@"wav"];

everything is OK, and path looks like this
/var/mobile/Applications/E8313E88-CE05-44B2-A80C-B05331D8596F/Myapp.app/sound1.wav

I cant understand why this works with pictures but not with sound?
Why I cant get sound from bundle? Only one thing I can suggest - imageNamed: do some work to find right path to file and dataWithContentsOfFile: does not.

Answer 1

In your code instead of

sound = [NSData dataWithContentsOfFile:path];

Use

NSString * path = [NSString stringWithFormat:@"%@.bundle/sounds/%@", selectedBundle, soundName]; 
NSString *fullPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:path];
sound = [NSData dataWithContentsOfFile:path];

Explanation: ImageNamed attaches the path of the application to the image name you specify