Introduction When designing an app that makes use of multiple view controllers it may become necessary to pass data back and forth between the view controllers. This common occurance will be...

Introduction CALayers are extremely powerful for rendering primitives and geometry, then animating out changes to the geometry or visual properties such as color. In this blog post we'll expand...

Introduction CALayers are extremely powerful for rendering primitives and geometry, then animating out changes to the geometry or visual properties such as color. In this blog post we'll create...

Introduction With the release of iOS 7, Apple included the ability to detect barcodes through its AV Foundation framework. The supported types are: UPC-A UPC-E Code 39 Code 39 mod 43 ...

Introduction When developing iOS applications without using Interface Builder, you'll always end up with a headache of trying to work out some math to split up and layout your views. One obscure method...

Introduction When performing complex animations during run-time or any task that would require the translation of one UIView's location into that of another UIView , keeping track of the math on your...