This tag should be used only on questions that are about Objective-C features or depend on code in the language.
I want to watch for changes in a UIView's frame, bounds or center property. How can I use Key-Value Observing …
iphone ios objective-c uiview key-value-observingI have a UIView which contains an AVPlayer to show a video. When changing orientation, I need to change the …
objective-c uiview calayer avplayerI have a UITextView object. The text in UIView has a phone number, mail link, a website link. I want …
ios objective-c hyperlink uitextviewHow can I convert an NSArray to an NSDictionary, using an int field of the array's objects as key for …
iphone objective-c nsarray nsdictionaryHey so i am just making an example application and i am having a little trouble, So i have a …
iphone objective-c xcode nstimerI was using this code to determine what is the size of the keyboard : - (void)keyboardWillChange:(NSNotification *)notification { NSDictionary* …
ios objective-c cocoa-touch keyboard ios8Is it possible to save images into NSUserDefaults as an object and then retrieve for further use?
ios objective-c iphone swift ipadBesides the obvious differences: Use enumerateObjectsUsingBlock when you need both the index and the object Don't use enumerateObjectsUsingBlock when you …
objective-c multithreading ios4 objective-c-blocksI'm able to put the contents of an NSSet into an NSMutableArray like this: NSMutableArray *array = [set allObjects]; The compiler …
objective-c cocoa-touch nsmutablearray nsarray nssetWith the introduction of Swift I've been trying to get my head round the new language I'm an iOS developer …
ios objective-c string macos swift