This tag should be used only on questions that are about Objective-C features or depend on code in the language.
I have a UIImage that is a small symbol that is all black. The UIImage is getting set in a …
ios objective-c uibutton uiimageI'd like to log the call trace during certain points, like failed assertions, or uncaught exceptions.
objective-c cocoaI'm starting objective-c development and I would like to ask the best way to implement a list of keys and …
ios objective-c nsmutabledictionaryI'm trying to get a list of all users and all groups on Mac OS X 10.5+. How can I do …
c objective-c cocoa macos macos-carbonI'm running into what seems to be common error, in that Xcode can't seem to find my 'Info.plist' file. …
ios objective-c xcode relative-path info.plistI have webviews inside of an iOS application that require an authentication cookie to be properly authenticated. I'm looking for …
objective-c ios uiwebviewHow can I return the first three characters of an NSString?
objective-c cocoaI need to drag my UIView object. I use this code, but it does not work float oldX, oldY; BOOL …
ios objective-c xcode uiview touchesbeganI've read as many search results I could find on this dreaded problem, unfortunatelly, each one seems to focus on …
objective-c ios7 core-graphicsHow can I avoid this warning in xcode. Here is the code snippet: [player(AVPlayer object) addPeriodicTimeObserverForInterval:CMTimeMakeWithSeconds(0.1, 100) queue:nil …
objective-c cocoa-touch automatic-ref-counting avplayer retain