Top "Objective-c" questions

This tag should be used only on questions that are about Objective-C features or depend on code in the language.

Learn C first before learning Objective-C

Being an aspiring Apple developer, I want to get the opinions of the community if it is better to learn …

c objective-c cocoa
Error with NSJSONSerialization - Invalid type in JSON write (Menu)

I have an App using core data with 3 entities with very similar attributes. The relationship is such as: Branch -&…

iphone objective-c json serialization ios5
How to determine the content size of a WKWebView?

I am experimenting with replacing a dynamically allocated instance of UIWebView with a WKWebView instance when running under iOS 8 and …

ios objective-c ios8 wkwebview
Unable to download application, <app-name> could not be installed at this time

I am getting this error when trying to install an app to a device. I've been dealing with code signing …

iphone objective-c ios xcode code-signing
iOS 7 round framed button

the iOS App Store has a blue round framed button for buying/downloading apps. In my App you can download …

ios objective-c cocoa-touch uibutton
Decompiling Objective-C libraries

I've just finished a library in Objective-C that I compiled as a Static Library for distribution. I'd wanted to know …

objective-c xcode decompiling cracking
Get current iPhone device timezone date and time from UTC-5 timezone date and time iPhone app?

In my iPhone application i am very struggling to convert the webservice response time to current device time. The webservice …

ios objective-c swift nsdate nsdateformatter
Calculating the number of days between two dates in Objective-C

Possible Duplicate: How can I compare two dates, return a number of days I have two dates (as NSString in …

objective-c ios nsstring nsdate
How do you obscure text in a password field in an iPhone Application?

I have a password field in my application (UITextField). When user enters text in the field, I want it to …

ios objective-c iphone uitextfield
How to allow only single UIViewController to rotate in both Landscape and Portrait direction?

My app is only for iphone device (both iphone 4 and 5) and built to support only ios 6. My whole app only …

iphone ios objective-c uiviewcontroller