Understanding Size Classes in Today Extensions: The Challenge and the Solution

Resolving Unrecognized Selector Error: A Step-by-Step Guide to Using Outlets and Action Methods

Understanding Non-Blocking Network Operations: Alternatives to `dataWithContentsOfURL`

How to Resolve Compatibility Issues with iPhone iOS 8.2 and Xcode 6.1.1

Understanding How to Open the iOS Settings App Programmatically Using the Settings Launch URL Scheme