This tag should be used only on questions that are about Objective-C features or depend on code in the language.
I have a UICollectionView in my storyboard based iOS app. When the device is in the portrait orientation I'd like …
ios objective-c scroll uicollectionview orientationI am attempting to update a single cell inside a UICollectionView, specifically I am just trying to update an image …
ios objective-c uitableview uicollectionview uicollectionviewcellHow do I make a custom UISegmentedControl? I have 2 images, 1 that should be displayed when the segment is active and …
iphone objective-c cocoa-touch uikit uisegmentedcontrolI'm kinda new to Objective-C and iPhone development and I've come across a problem when trying to center the text …
objective-c iphone ios4I have a Class (but no instance) and need to know if it conforms to a certain protocol. However, Class …
objective-c runtimeI'm developing an app for iOS 7 in Objective-C. I've got a screen in my app with a few buttons and …
ios objective-c swift parallaxHow to calculate the MD5 in Objective-C?
objective-c iphone cryptography md5 cryptographic-hash-functionConsider the following example: " Hello this is a long string! " I want to convert that to: "Hello this is a …
objective-c ios nsstringI am (trying to) learn Objective-C and I keep coming across a phrase like: -(id) init; And I understand …
objective-c typesI'm still kind of new to Objective-C and I'm wondering what is the difference between the following two statements? [object …
objective-c selector dynamic-languages method-dispatch