NSBundle

Getting the Main Bundle

1. Getting a reference to the main bundle using Cocoa.

To get the main bundle in Cocoa application, call the mainBundle class method of the NSBundle class.

   NSBundle *mainBundle;
   // Get the main bundle for the app;
   mainBundle = [NSBundle mainBundle];

2. Getting a reference to the main bundle using Core Foundation.

Use the CFBundleGetMainBundle function to retrieve the main bundle for your C-based application.

   CFBundleRef mainBundle;
   // Get the main bundle for the app
   mainBundle = CFBundleGetMainBundle();

Getting Bundle by Path

1. Locating a Cocoa bundle using its path

To obtain the bundle at a specific path using Cocoa, call the bundleWithPath: class method of the NSBundle

   NSBundle *myBundle;
   // obtain a reference to a loadable bundle 
   myBundle = [NSBundle bundleWithPath:@"/Library/MyBundle.bundle";

2. Locating a Cocoa Foundation bundle using its Path

To obtain the bundle at a specific path using Core Foundation, call the CFBundleCreate function and must use CFURLRef type.

   CFURLRef bundleURL;
   CFBundleRef myBundle;
   // Make a CFURLRef from the CFString representation of the bundle's path.
   bundleURL = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, CFSTR("/Library/MyBundle.bundle"), kCFURLPOSIXPathStyle, true);
   // Make a bundle instance using the URLRef.
   myBundle = CFBundleCreate(kCFAllocatorDefault, bundeURL);
   // You can release the URL now.
   CFRelease(bundleURL);
   // Use the bundle ...
   // Release the bundle when done.
   CFRelease(myBundle);