How to Update Existing Apps with a New Distribution Certificate and Private Key Without Losing Your Original App's Authenticity

How to Change Language when Button Pressed in Xcode: A Comprehensive Guide to Multi-Language App Development

Understanding iPhone SDK System Time vs User Time: A Comprehensive Guide to Accurate Calculations

How to Silently Get Rid of Xcode 4's "Expression Result Unused" Warning for NSURLConnection Operations with Automatic Reference Counting (ARC)

Clearing Purchases from iOS In-App Purchase Sandbox for a Test User: 3 Essential Methods

Displaying Unread Local Notifications in an iOS App Using `UNUserNotificationCenter`

Mastering NSXMLParser: A Step-by-Step Guide to Parsing RSS Feeds in Cocoa

Passing Data Between View Controllers Using Delegates in iOS

Understanding iPhone View Controllers and NIB Loading Issues: A Step-by-Step Guide to Resolving Crashes Displaying Exceptions

Retrieving Product IDs Dynamically with iTunes Connect: A Step-by-Step Guide