This tag should be used only on questions that are about Objective-C features or depend on code in the language.
I've read the NSCopying docs but I am still very unsure about how to implement what is required. My class …
iphone ios objective-c nscopyingI want to convert my timestamp value 1308031456 to NSDate format (which yields the value Tue, 14 Jun 2011 06:04:16 GMT in online web …
objective-c iphone swift nsdateI have a question about setting the size of a view to which i'm applying some layout constraints. How can …
objective-c ios xcode nslayoutconstraintHow do I convert a string to a float in Objective-C? I am trying to multiply a couple of strings …
objective-c nsstring string-conversionI'm having some trouble with converting Objective-C code to create a directory for Swift. Objective-C: NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, …
ios objective-c swift nsfilemanager nsdocumentdirectoryWhat is the equivalent to protected methods in Objective-C? I want to define methods which only the derived classes may …
objective-cI'm trying to show changes made to a UITextField on a separate UILabel. Is there a way to capture full …
iphone objective-c ios uitextfieldI need to create a mutable two-dimensional array in Objective-C. For example I have: NSMutableArray *sections; NSMutableArray *rows; Each item …
objective-c cocoa cocoa-touch multidimensional-array nsmutablearrayIs there a method that I can override in my custom classes so that when NSLog(@"%@", myObject) is called, it …
objective-c tostring nslogIs it possible to add a shadow to the text in a UITextField?
iphone objective-c uikit uitextfield shadow