Now that we have defined the interface and some stub methods for browsing our Pictures folder, we can continue to complete the implementation by coding the methods required to implement the desired behavior.
When a
BTSImageobject is created, it must be initialized with anNSURL. We accomplish this by implementing the method namedinitWithURL:using the following program code, which simply assigns theNSURLpassed to the method to the instance variable.// Assign an NSURL to the BTSImage // and return the BTSImage object - (id)initWithURL:(NSURL *)a_URL { self = [super init]; if (self) { // Initialization code here. m_URL = a_URL; } return self; }The
IKImageBrowserViewobjectdataSourceprotocol will invoke a method on our object to determine how we have selected to represent the image. Because we are using anNSURLto represent our images, we can simply return the constant...