#objective c

Conforming to Objective C protocols in Swift When conforming to an Objective C protocol in Swift, make sure that the Swift class also inherits from NSObject.

Getting the UDID of an iOS device [[UIDevice currentDevice] uniqueIdentifier]

Getting filepath to the Documents folder on iPhone To achieve the task written in the title of this post, you have to do the following: NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsPath = [paths …

A very simple way to load a webpage with Cocoa NSError *error = [[NSError alloc] init];NSURL *url = [NSURL URLWithString:@"http://www.google.com/"];NSString *content = [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:&error];

Clean & rebuild Oh, boy. I’d been struggling with this for a while. I loaded a view from a nib, and my app kept crashing with an exception saying: loaded the “foo” nib but the view outlet was not set. I was like WTH, I definitely connected the view outlet to the …

NSTimer invalidate When you create an NSTimer, and specify it to be a non-repeat timer, you don’t have to invalidate it after it fired. When you created a repeating timer, you send the invalidate message to it to remove it from the NSRunLoop object it was added to, and thus …